Building words, in plain English
Every underlined word in a plan links to one of these. 357 words, written for a first build.
- 3-4-5 · also 3-4-5 rule, 6-8-10
- A way to get a square corner outdoors: measure 3 ft along one side and 4 ft along the other; the corner is square when those marks are exactly 5 ft apart. Use 6-8-10 for bigger layouts.
- 811
- The free US "call before you dig" number. Call (or go to call811.com) a few days before digging; they mark buried gas, power and water lines.
- acrylic
- A clear plastic sheet (Plexiglas is a brand) that stands in for glass. It doesn't shatter into sharp pieces and can be drilled with care.
- actual size
- The real measured size of lumber, smaller than its name: a 2×4 is 1 1/2″ × 3 1/2″.
- aggregate
- The sand and stones in concrete or a gravel base.
- anti-fatigue mat
- A thick cushioned mat to stand on at a standing desk or counter. It eases leg and back strain.
- anti-tip kit · also anti-tip, anti tip
- A strap or bracket that ties the top of tall furniture to a wall stud so it can't fall on someone.
- apron · also aprons
- The board running under a tabletop between the legs. It stiffens the top and keeps the legs from racking.
- arbor
- A small open frame of posts and beams over a path or gate, usually covered with climbing plants.
- auger
- A powered corkscrew for drilling post holes; rent one for more than a few holes.
- axle
- The steel rod a wheel turns on.
- baffle · also baffles, predator baffle
- A metal cone or tube clamped around a post under a birdhouse or feeder. Cats, raccoons, snakes and squirrels can't climb past it.
- band clamp · also band clamps, strap clamp
- A strap that wraps right around a frame or box and is pulled tight with a ratchet, squeezing all four corners at once.
- barrel nut · also barrel nuts
- A small steel cylinder with a threaded hole across it. It sits in a hole drilled in the wood and catches the end of a bolt.
- basket weave · also basketweave
- A paver pattern of pairs laid side by side, each pair turned 90° to its neighbours, like a woven basket.
- batten · also battens
- A narrow strip screwed across the back of several boards to hold them together as one panel.
- batter boards · also batter board
- Two stakes with a crosspiece set a little outside each corner of a layout. Strings tied to them mark the outline and can be moved until the layout is square.
- batting
- A thin fluffy polyester sheet laid over the foam. It rounds the edges and lets the fabric slide, so the seat looks smooth and the fabric wears longer.
- beam · also beams
- A big horizontal member that carries joists or rafters and passes the load to posts.
- bed bolt · also bed bolts
- A long bolt that passes through one frame part into a nut buried in the other, so the furniture can be taken apart.
- bedding sand · also leveling sand
- A 1″ layer of coarse concrete sand screeded flat under pavers.
- bevel · also bevelled, beveled
- A cut tilted through the thickness of the board instead of square to the face.
- birdsmouth · also bird's mouth, birdsmouths
- A notch cut near the bottom of a rafter so it sits flat on top of a wall.
- biscuit · also biscuits
- A football-shaped wafer glued into slots in two boards to align them.
- bleed water
- The water that rises to the top of fresh concrete. Wait until it's gone before you smooth the surface, or the top stays weak and dusty.
- board cream · also board butter
- Mineral oil thickened with beeswax. Rubbed on after oiling, it seals the surface of a cutting board a little better than oil alone.
- bottom plate · also bottom plates, sole plate
- The horizontal 2×4 at the bottom of a wall that the studs stand on.
- brad · also brads, brad nails
- A thin small nail, usually shot from a brad nailer, to hold parts while glue dries.
- brad nailer
- An air or battery tool that shoots thin brads. Keep fingers clear of the nose.
- brad-point bit · also brad point bit, brad-point
- A wood drill bit with a sharp centre spike and two spurs. It starts exactly on your mark and leaves a clean hole.
- breakaway · also breakaway post
- A mailbox post made light enough to snap or bend over if a car hits it, instead of acting like a solid pole. Many road authorities require it.
- broom finish
- Fine lines dragged across fresh concrete with a stiff broom so the surface isn't slippery when wet.
- browns
- Dry, carbon-rich compost material: dead leaves, straw, shredded cardboard and paper, wood chips.
- butcher block · also butcher-block
- A thick countertop made of hardwood strips glued side by side, sold ready to cut. It moves a little with the seasons, so it is fastened with slotted holes or clips, never glued down.
- butt hinge · also butt hinges
- The plain two-leaf hinge on most room doors. Small ones join two panels edge to edge.
- butt joint
- The simplest joint: one board's end against another board, held with screws and glue.
- cantilever · also cantilevered
- A beam held at one end only, like a diving board or a rack arm. It bends more than a beam held at both ends, so it needs a stiff, well-fastened root.
- carcass · also carcase
- The main box of a cabinet or dresser: sides, top, bottom and back.
- carriage bolt · also carriage bolts
- A bolt with a smooth round head and a square neck that grips the wood, tightened with a nut and washer.
- caster · also casters
- A small wheel on a metal plate that screws to the bottom of a box or cart. Swivel casters turn in any direction.
- caul · also cauls
- A straight, stiff board clamped across a glue-up to keep the pieces flat and in line while the glue dries.
- caulk · also caulked, caulking
- A paste squeezed from a tube to seal gaps against water or air.
- cedar
- A light wood that resists rot naturally. Good for planters and outdoor furniture without chemicals.
- cement
- The grey powder that hardens concrete. "Cement" alone is not concrete; you need the bagged concrete mix.
- chalk line
- A string coated in chalk: stretch it tight and snap it to mark a long straight line.
- chamfer · also chamfered
- A small flat 45° slice along an edge to soften it.
- chicken wire
- Thin twisted-wire mesh with hexagon holes. It keeps chickens in but does not keep predators out: raccoons tear it and reach through it.
- chip stone · also 3/8″ crushed stone
- Small crushed stone, about 3/8″. The sharp faces lock together, so it makes a firm walking surface.
- circular saw
- A handheld power saw with a round blade, for straight cuts in boards and sheets. Let the blade stop before lifting it.
- clamp · also clamps, clamped, clamping
- A tool that squeezes parts together while glue dries or while you drive screws.
- clean stone · also 3/4″ clean stone, clean gravel
- Crushed stone with the dust washed out (often 3/4″ clean). Drains well; use it where water must get away.
- clearance · also clearances, air gap, air gaps
- The air gap an appliance needs around it, given in its installation manual. Too little and it runs hot, works harder and wears out.
- cleat · also cleats
- A strip of wood screwed to one part to support or hold another.
- closet rod · also closet rods, hanging rod
- The round bar that hangers hang from. Long rods bend under clothes unless they have a support in the middle.
- closure strip · also closure strips
- A foam strip shaped like the waves of a corrugated panel. It plugs the gaps under the panel at the low and high ends against birds, wasps and blown rain.
- cold joint
- A weak seam where fresh concrete was placed against concrete that had already started to stiffen. Avoid it by placing each batch while the last one is still soft.
- combination square
- A ruler with a sliding head for marking square lines and measuring depths.
- compact · also compacted, compaction, compacting
- Pressing loose soil or gravel down hard with a tamper or plate compactor so it won't settle later. Do it in layers 2–3″ thick.
- concrete
- Cement, sand, gravel and water mixed into a paste that hardens like stone. Sold dry in bags; you add water.
- control joint · also control joints, groover
- A groove cut into a slab so it cracks along the groove instead of randomly. One every 4–6 ft for a 4″ slab.
- corner block · also corner blocks
- A short block of wood glued and screwed across the inside corner where two aprons meet a leg. It stops a chair or stool from racking.
- corner clamp · also corner clamps
- A clamp that holds two pieces at exactly 90° while you glue or nail them.
- counterbore
- A wider, flat-bottomed hole above a screw hole so the head sits below the surface and can be plugged.
- countersink · also countersunk, countersinking
- A cone-shaped widening at the top of a hole so a screw head sits flush with the surface.
- countertop bracket · also countertop brackets, hidden bracket, hidden brackets
- A steel L-bracket screwed under a countertop overhang to hold it up where people sit or lean.
- cripple · also cripples, cripple stud, cripple studs
- A short stud between a door header and the top plate, keeping the 16″ stud rhythm over the opening.
- cripple studs · also cripple stud
- The short studs under a window, between the bottom of the window frame and the floor. Usually 16″ apart, like other studs.
- cross-lap · also cross-lap joint, cross-lapped
- Two boards that cross in an X or plus shape, each notched halfway through so they sit flush with each other.
- crosscut · also crosscuts
- A cut across the grain, making a board shorter.
- crown
- The slight upward bow along a board's edge. Set joists and rafters crown up, so weight flattens them.
- crushed gravel · also crushed stone
- Angular broken stone. The sharp edges lock together when compacted, so it stays put. Round pea gravel does not.
- cubby · also cubbies
- An open box-shaped compartment for shoes, baskets or bags.
- cup hinge · also cup hinges, euro hinge, euro hinges, concealed hinge
- A concealed cabinet hinge that sits in a 35 mm round hole drilled in the back of the door. Adjusts with its screws.
- cupped · also cupping
- A board that curves across its width, like a shallow trough.
- cure · also curing, cured
- Concrete hardening by a chemical reaction with water, not by drying out. Keep it damp for about a week so it gets strong.
- d-ring · also d-rings, D-ring, D-rings
- A small metal loop on a plate that screws to the back of a frame. Picture wire or a wall hook goes through it. Use them in pairs.
- dado · also dadoes, dados
- A flat-bottomed groove cut across a board for a shelf to sit in. Stronger and squarer than screws alone.
- deck block · also deck blocks
- A precast concrete block with a notch on top for a post or joist, set on compacted ground.
- deck joist · also deck joists
- A board on edge under a seat deck, between the front and back rails, that keeps the plywood from sagging between the rails.
- deck screw · also deck screws
- A coated, corrosion-resistant screw for outdoor wood.
- deep litter
- Keeping a thick layer of pine shavings on the coop floor and stirring it, adding fresh shavings on top instead of cleaning out every week.
- demold · also demolding, de-mold
- Taking a cast piece out of its mold once the concrete has set hard enough to hold its shape.
- dense-grade aggregate · also crusher run, DGA, road base, quarry process
- Crushed stone mixed with stone dust (sold as crusher run, DGA, QP or road base). It packs hard like a road; best for a base you compact.
- depth stop · also stop collar
- A collar on a drill bit, or a piece of tape wrapped around it, that shows when the hole is deep enough so every hole comes out the same.
- diagonals · also diagonal
- Corner-to-corner measurements. If both diagonals of a rectangle are equal, it's square.
- diamond blade · also masonry blade, diamond masonry blade
- A steel disc with diamond grit on the rim that grinds through concrete, pavers and stone. A wood blade won't cut them.
- diverter · also downspout diverter
- A fitting cut into a downspout that sends rain into a barrel until it is full, then lets the rest carry on down the downspout.
- double hang
- Two closet rods, one above the other, for shirts and folded trousers. It holds about twice as many short clothes as one rod.
- dowel · also dowels
- A short wooden pin glued into matching holes in two parts to line them up and hold them.
- downspout · also downspouts
- The vertical pipe that carries rain water from the roof gutter down to the ground.
- drainage hole · also drainage holes, drain hole, drain holes
- A hole in the bottom of a planter so extra water can escape instead of drowning roots and rotting the wood.
- drainage holes · also drainage hole, weep holes, weep hole
- Holes in the bottom of a planter so extra water runs out. Without them, roots sit in water and rot.
- drawer box
- The plain box of a drawer that rides on the slides; a nicer front is often screwed onto it.
- drawer slide · also drawer slides, slides
- A metal runner pair that lets a drawer roll in and out. Sold by length and weight rating.
- drill/driver
- A cordless drill for drilling holes and driving screws.
- drip edge
- A bent metal strip along roof edges that sheds water away from the wood.
- drum mixer · also cement mixer, concrete mixer
- A rentable electric mixer with a turning drum. It mixes two bags of concrete at a time while you place the last batch.
- dry-fit · also dry fit, dry-fitting
- Putting parts together without glue or screws to check they fit before the real assembly.
- drywall anchor · also drywall anchors
- A plastic or metal plug for hanging light things on drywall. Not for shelves that carry books.
- dust cover · also dust cloth, cambric
- A thin black cloth stapled under an upholstered seat to hide the raw fabric edges and staples.
- easement · also easements
- A strip of your yard someone else (a utility, a neighbour) has a right to use. Don't build on it.
- eave · also eaves
- The lower edge of a roof that hangs past the wall.
- edge banding · also edge-band, edge-banding
- A thin strip of real wood with heat glue on the back. You iron it onto plywood edges to hide the layers.
- edge grain · also edge-grain
- A board made of strips stood on their narrow edges, so the edges of the wood fibres face up. Tougher than a flat board and easier on knives than plastic.
- edge restraint · also edging
- Plastic, metal or concrete edging staked around pavers so they can't creep outward.
- edger
- A concrete tool with a curved lip that rounds the slab edge so it doesn't chip.
- egg-crate · also egg crate
- A grid made of strips that slot into each other halfway, like the dividers in an egg carton.
- elbow height
- The height of the underside of your elbow from the floor, standing relaxed with your upper arm hanging and forearm level.
- end grain
- The cut end of a board, where you see the growth rings. It soaks up glue and finish fast and holds screws poorly.
- end panel · also end panels
- A finished plywood panel at the end of a cabinet run, or beside a dishwasher, that hides the side and holds up the countertop.
- entrance hole · also entrance holes
- The round door of a birdhouse. Its size decides which birds can get in: a wren hole keeps out larger, bullying birds like starlings.
- exposure
- How much of each shingle row shows below the row above it: 5″ for standard 3-tab shingles.
- exterior oil · also penetrating oil, penetrating stain
- A penetrating oil finish made for outdoor wood (often with a little stain and mildew blocker). It soaks in instead of forming a film, so it never peels; you wipe on a fresh coat every year or two.
- eye bolt · also eye bolts
- A bolt with a closed loop for a head that goes all the way through a board and is held by a nut and washer.
- face frame
- A frame of narrow boards glued to the front of a cabinet box.
- face grain
- The wide, flat face of a board, where you see the long stripes and patterns of the wood.
- false bottom
- A floor set partway up a tall planter. Soil only fills the box above it, so you buy less soil and the planter weighs far less.
- fascia
- The board nailed across the ends of rafters along the eave.
- fender washer · also fender washers
- A wide, flat washer with a small hole. It spreads a bolt's grip over more wood so the nut can't pull into it.
- figure-8 fastener · also figure-8 fasteners, figure-8, tabletop fasteners
- A small steel piece shaped like an 8 that holds a tabletop to its frame while letting the wood move with the seasons.
- finish
- The protective coat on wood: paint, stain plus clear coat, oil or polyurethane.
- finishing washer · also finishing washers
- A cup-shaped washer that sits under a screw head on thin panels like pegboard, so the head can't pull through.
- fledglings · also fledgling
- Young birds that have just left, or are about to leave, the nest. Grooves inside the front help them climb out.
- float · also bull float
- A flat hand tool you sweep over wet concrete to push the stones down and bring smooth paste up; also to do that.
- flush
- Two surfaces exactly even, with no step between them.
- footing · also footings
- The concrete pad at the bottom of a post hole or under a structure that spreads its weight into the soil.
- footrest · also footrests
- A low rail on a tall stool where you rest your feet. It also braces the legs.
- form release · also release oil, release agent
- An oil sprayed or brushed on the inside of forms and molds so concrete doesn't stick to them.
- form tube · also form tubes, sonotube, Sonotube
- A heavy cardboard tube (Sonotube is a brand) that you set in a hole and fill with concrete to make a round pier.
- formwork · also form boards
- The temporary wooden box or tube that holds wet concrete in shape until it hardens.
- forstner bit · also Forstner bit, forstner
- A drill bit that cuts a clean flat-bottomed round hole, used for hinge cups and recesses.
- framer's points · also framer's point, framers points, glazier points
- Flat metal tabs pressed into the inside of a frame to hold the glass, art and backer in. Push them in with a putty knife; bend them up to open the frame again.
- french cleat · also French cleat, french cleats
- Two strips cut at 45°: one screwed to the wall, one to the back of the piece. The piece hooks on and pulls itself tight to the wall.
- frost depth · also frost line, frost
- How deep the ground freezes in winter where you live. Footings below it don't get pushed up by frost. Your town knows the number.
- frost heave
- Freezing soil swelling and lifting whatever sits on it, then dropping it again in spring.
- full-overlay · also full overlay
- Doors and drawer fronts that cover the front edges of the cabinet box almost completely.
- gable · also gables, gable end
- The triangular end wall under a two-sided roof.
- galvanized · also hot-dip galvanized, galvanised
- Steel coated in zinc so it doesn't rust outdoors. Use galvanized or stainless fasteners with pressure-treated wood.
- gas strut · also gas struts, lid struts
- A small gas-filled cylinder, like the ones on a car hatch, that holds a lid up and lets it close slowly. They are sold by force; pick the one that matches your lid.
- glide · also glides
- A small plastic or nylon foot under a leg. It keeps the end grain off wet ground and lets the piece slide without scratching.
- glue-up · also glue up
- Gluing and clamping several parts at once. Lay everything out and dry-fit first, because glue gives you about 10 minutes.
- good face
- The side of a board or sheet you want people to see. Keep it up or out, and mark the other side.
- grade
- The ground surface. "Above grade" means above the ground; "grade slopes" means the ground isn't level.
- grain · also wood grain
- The direction the wood fibres run, visible as lines along a board. Wood is strong and stable along the grain, weak and prone to splitting across it.
- greens
- Wet, nitrogen-rich compost material: vegetable scraps, coffee grounds, fresh grass clippings, plant trimmings.
- grit · also grits
- How coarse sandpaper is. Lower numbers (80) remove wood fast; higher numbers (180–220) make it smooth. Work up through the grits.
- groove
- A channel cut along the grain, for example to hold a drawer bottom.
- ground anchor · also ground anchors, auger anchor, auger anchors
- A steel corkscrew you twist deep into the soil and tie a small building down to, so wind can't slide or tip it.
- ground contact · also ground-contact
- A rating on pressure-treated lumber for wood that touches soil or sits where it stays wet. Use "ground contact" for posts, skids and anything near dirt.
- growth rings · also growth ring
- The curved lines you see on the end of a board, one per year the tree grew. Their curve shows which way a board will cup as it dries.
- half-lap · also half lap, half-laps
- A joint where each board is cut halfway through its thickness so they cross flush.
- hand hole · also hand holes
- A slot cut through a board to grip it by, instead of a handle.
- hand tamper · also tamper, tamp, tamped, tamping
- A heavy flat steel plate on a handle; you lift and drop it to pack gravel or soil.
- hardware cloth
- Stiff welded wire mesh with small square holes (1/4″ or 1/2″). Unlike chicken wire, raccoons and rats can't tear or squeeze through it.
- hardwood
- Wood from leafy trees (oak, maple, walnut). Harder and pricier than pine; predrill every screw.
- header · also headers
- A doubled board over a door or window opening that carries the load around the gap.
- heartwood
- The darker wood from the middle of the tree. In cedar it holds the natural oils that resist rot; pale sapwood rots much faster.
- herringbone
- A zigzag pattern with each piece set at a right angle to the next. In pavers it's the strongest pattern, and the one with the most cuts.
- high-density foam · also upholstery foam, foam
- Firm upholstery foam that springs back for years. Buy "high-density" (1.8 lb or more) for seats; soft craft foam flattens in weeks.
- hole saw · also hole saws
- A round saw cup that fits on a drill and cuts clean round holes. Let the pilot bit go through first and keep the drill straight.
- hopper · also hoppers
- The seed bin of a feeder. Seed trickles out of a narrow gap at the bottom as birds eat it.
- hurricane tie · also hurricane ties
- A bent steel strap that ties a rafter or joist down to the wall or beam so wind can't lift it.
- impact driver
- A compact drill that hammers as it turns, for driving long screws easily.
- inset
- A door or drawer front that sits inside its opening, flush with the frame around it, instead of covering it.
- isolation joint · also expansion joint, isolation strip, expansion strip
- A strip of foam or fibre board where new concrete meets a wall, step or older slab, so each can move without cracking the other.
- j-bolt · also J-bolt, j-bolts, anchor bolt
- An L- or J-shaped bolt set into wet concrete, sticking up to hold a post base or plate.
- jack stud · also jack studs, trimmer
- A shorter stud nailed inside each king stud. The door header sits on top of the two jack studs.
- jigsaw
- A handheld saw with a short up-and-down blade, for curves.
- joist · also joists
- One of the parallel boards that hold up a floor or deck, set on edge.
- joist hanger · also joist hangers
- A U-shaped steel bracket that holds the end of a joist against a beam or rim. Fill every nail hole with the nails the label names.
- kerf
- The slot a saw blade removes, about 1/8″ wide. Measure to the side of the line you keep, and cut on the waste side.
- king stud · also king studs
- A full-height stud on each side of a door opening, next to the shorter jack stud.
- knock-down · also knockdown
- Built so it comes apart with a wrench for moving, using bolts instead of glue at the main joints.
- knot · also knots
- A dark round spot where a branch grew. Loose knots can fall out; avoid them near cuts and screws.
- lag screw · also lag screws, lag bolt, lag bolts
- A big, thick screw with a hex head, driven with a socket wrench into a predrilled hole.
- landscape edging
- Plastic, steel or wood strips set on edge along a path or bed to keep the gravel in and the grass out.
- landscape fabric · also geotextile, weed barrier
- A woven or felt sheet laid under gravel to keep it from mixing into the soil and to slow weeds.
- lattice
- A grid of thin wood strips crossing each other, for climbing plants to grab and weave through.
- lean-to · also lean to
- A building with a single-slope roof: one wall is taller than the other, so rain runs off one side.
- ledger · also ledgers
- A strip screwed along the inside of a rail so other parts (joists, slats) can rest on it.
- level · also levelled, leveled
- Perfectly horizontal; also the tool (a bubble in a vial) that shows it.
- level cut · also level cuts
- An end cut on a slanted board made so the cut face sits flat and level on what is below it.
- lid stay · also lid stays, lift stay, lift stays
- A folding metal arm that holds a lid or flap open so it can't fall on your hand.
- lid support · also lid stay, lid supports, soft-close lid support
- A spring hinge-arm fixed between a lid and its box that holds the lid open at any height and lowers it slowly, so it cannot slam on hands.
- lifts
- Layers of gravel or soil, each spread and compacted before the next goes on.
- line level · also string level
- A tiny bubble level that hooks onto a tight string to show when the string is level.
- lock nut · also nylon lock nut, lock nuts
- A nut with a nylon ring inside that grips the bolt, so it does not loosen when the joint moves. Also called a nylon lock nut or nyloc.
- long point · also long points, short point, short points
- On a piece with 45° miters, the tip on the longer edge. Frame lengths are measured long point to long point.
- magnesium float · also mag float
- A flat hand float, 12–16″ long, made of light metal. Swept over wet concrete it pushes the stones down and brings smooth paste up.
- magnetic catch · also magnetic catches
- A small magnet and a metal plate that hold a cabinet door or flap shut.
- mason's line · also mason line, string line
- Strong nylon string stretched tight between stakes to mark straight lines and heights outdoors.
- mdo plywood · also MDO, MDO plywood
- Medium-density overlay plywood: exterior plywood with a smooth resin-paper face made for painted signs. Paint sticks well and the grain never shows through.
- mesh chair · also mesh chairs, rebar chair, rebar chairs
- A small plastic stand that holds wire mesh up in the middle of the slab's thickness, where it does its job.
- mineral oil · also food-grade mineral oil
- A clear, odourless oil sold as "food-grade" or as a laxative at the pharmacy. It soaks into wood and never goes rancid, so it is the standard finish for cutting boards.
- mirror image · also mirror images
- A left and right part that match like your two hands: the same, but flipped.
- miter · also mitre, mitered
- An angled cut, usually 45°, so two pieces meet at a corner without showing end grain.
- miter saw · also chop saw
- A saw on a pivoting arm that chops boards to length at exact angles. Also called a chop saw.
- moisture
- Water in the wood. Wet wood shrinks as it dries, so let new lumber sit indoors a few days before building furniture.
- mortar
- Cement and sand without gravel, for laying bricks and blocks. Not for footings or slabs.
- mortise · also mortises
- A rectangular hole cut into a leg or post for a tenon to fit into.
- nest box · also nest boxes, nesting box, nesting boxes
- A small box (about 12″ cube) with bedding where hens lay eggs. One box is enough for three or four hens.
- nesting tables
- A set of tables of falling sizes, each one sliding under the next to save space.
- no-mortise hinge · also no-mortise hinges
- A small hinge whose leaves fold into each other, so you just screw it on: no recess has to be chiselled into the wood.
- nominal size · also nominal
- The name a board is sold by, not its real size. A "2×4" is really 1 1/2″ × 3 1/2″; a "1×12" is 3/4″ × 11 1/4″. Plans here always use the real (actual) size.
- notch · also notches, notched
- A cut-out on the edge of a board so another part can sit in it.
- on center · also o.c., OC
- Spacing measured from the middle of one board to the middle of the next. "16″ on center" is the usual stud and joist spacing.
- open time
- How long glue stays workable after you spread it: about 5–10 minutes for wood glue.
- osb · also OSB
- Oriented strand board: sheets of wood chips pressed with glue. Cheaper than plywood, used for sheathing and roofs, swells if it stays wet.
- outfeed · also outfeed table, outfeed wing, outfeed wings
- The side of a saw where the cut piece comes out. An outfeed table holds long pieces level as they leave the blade, so they don't tip or pinch.
- overflow
- The outlet near the top of a rain barrel that lets extra water out once it is full. Point it, or a hose on it, well away from the house foundation.
- overhang · also overhangs
- How far one part sticks out past what it sits on, like a tabletop past the legs or a roof past the wall.
- p-trap · also P-trap, drain trap
- The U-shaped bend in the drain pipe under a sink. It holds a little water that keeps sewer smells out. Don't bump or loosen it.
- paver base
- The compacted gravel layer under pavers, usually 4–6″ thick.
- pavers · also paver
- Concrete or stone blocks laid tight together on a sand-and-gravel base to make a patio or path.
- pea gravel
- Small, smooth, round stones about 3/8″ across. Soft underfoot, but they roll and never lock together.
- pedestal
- A single central column that holds up a tabletop, standing on spreading feet.
- pegboard
- Hardboard with a grid of holes 1″ apart. Metal hooks drop into the holes. It needs a gap behind it so the hooks can go in.
- penetrating oil · also exterior oil
- A finish that soaks into the wood instead of sitting on top as a film. It never peels; you just clean and recoat it.
- piano hinge · also continuous hinge
- One long thin hinge running the full length of a lid, screwed every few inches. It spreads the load so the lid doesn't twist.
- picture wire
- Braided steel wire strung between two D-rings so a frame can hang from a hook. The package says how much weight it holds.
- pier · also piers
- A concrete column (usually poured in a cardboard tube) that holds a post above the ground.
- pilot hole · also pilot holes, predrill, predrilled, pre-drill
- A small hole drilled first so a screw goes in straight and doesn't split the wood. Use a bit a bit thinner than the screw.
- pitch · also roof pitch
- How steep a roof is, given as rise per 12″ of run: a 4/12 pitch rises 4″ every foot.
- pivot bolt · also pivot bolts, pivot
- A bolt that parts turn around, like the leg of a folding board. It is tightened with a nylon lock nut so it stays put while still letting the parts swing.
- plate compactor
- A rentable gas machine with a vibrating plate that packs gravel far better than a hand tamper.
- pleat · also pleats, pleated
- A neat fold in fabric at a corner, pressed flat and stapled, like the folded end of a wrapped present.
- plumb · also out of plumb
- Perfectly vertical. Check with a level held against the side of a post, on two sides.
- plywood
- Sheets made of thin wood layers glued with the grain crossing. Flat, strong both ways, sold 4′ × 8′.
- pocket hole · also pocket holes, pocket-hole, pocket screws, pocket screw
- A screw hole drilled at a steep angle with a jig, so the screw pulls two boards together and the hole hides on the back.
- pocket-hole jig
- A clamp-on guide (Kreg is the common brand) that drills pocket holes at the right angle and depth.
- polymeric sand
- Sand with a binder that hardens when wetted, swept into paver joints to lock them and stop weeds.
- polyurethane · also poly
- A clear, hard varnish that protects wood from water and wear. Use water-based for indoors, oil-based or spar urethane for outdoors.
- pop door · also pop doors
- The small door the chickens use to go in and out of the coop. You close it at night once they are inside.
- post base · also post bases
- A steel bracket that holds a post off concrete so the end doesn't sit in water.
- post-hole digger · also post hole digger, clamshell digger
- A two-handled tool with clamshell blades for digging narrow deep holes for posts.
- potting mix
- A light, fluffy soil made for containers (peat or coir, compost and perlite). Garden dirt packs down hard in a box and drowns roots.
- pre-stain conditioner · also wood conditioner
- A thin sealer brushed onto soft woods like pine before stain, so the colour soaks in evenly instead of blotchy.
- predator apron · also apron
- A strip of hardware cloth laid flat on (or just under) the ground around a run. Digging animals dig straight down at the wall, hit the wire and give up.
- predrilling
- Drilling a pilot hole before driving a screw, so the wood doesn't split. Essential near the end of a board and in cedar, which splits easily.
- pressure-treated · also pressure treated, PT lumber, treated lumber
- Lumber soaked with preservative so it resists rot and insects outdoors. Use it for anything touching the ground. Wear gloves and a mask when cutting; never burn the offcuts.
- prevailing wind
- The direction storms and wind usually come from where you live. Lap roof panels so the laps face away from it.
- primer
- The first coat under paint that seals the wood so paint sticks and covers evenly.
- project panel · also project panels
- A 2′ × 4′ piece of plywood sold ready-cut at home centers: easier to carry and cheaper than a full sheet for small builds.
- prop stick · also prop bar
- A bar that props a hinged part up and drops into notches to hold it at different angles, like a chaise lounge back.
- purlin · also purlins
- A board (here a 2×4 laid flat) running across the rafters so metal roof panels have something to screw into every 2 feet.
- push stick
- A notched stick that pushes wood past a table saw blade so your hand never goes near it.
- rabbet · also rabbets
- A step cut along the edge or end of a board, like a dado with one side missing.
- racking · also racked
- A frame leaning sideways out of square, like a bookcase that wobbles side to side. Backs, aprons and braces stop it.
- rafter · also rafters
- One of the sloped boards that hold up a roof.
- rafter tail · also rafter tails, tails
- The end of a top board that sticks out past the beam it rests on, often cut to a curve for looks.
- rail · also rails
- A horizontal frame member, such as the board between two legs or across a door frame.
- raise the grain · also raising the grain, grain raising
- Wetting sanded wood on purpose so the loose fibres stand up, then sanding them off. The piece stays smooth the first time it gets wet in use.
- rake edge · also rake edges, rakes
- The sloped side edge of a roof, from the low corner up to the peak or the high edge.
- random-orbit sander · also orbital sander, random orbit sander
- A round power sander that doesn't leave swirl marks. The usual sander for furniture.
- ready-mix · also ready mix, ready-mixed
- Concrete mixed at a plant and delivered in a drum truck. Cheaper and far less work than bags once you need more than about 1 cubic yard.
- rebar
- Steel reinforcing bar laid inside concrete to hold cracks together.
- reveal
- A small, deliberate step or gap between two parts, so slight misalignment doesn't show.
- ridge board · also ridge
- The board along the peak of a roof that the rafters lean against.
- ridge cap · also ridge caps, cap shingles
- Shingle pieces bent over the peak of a roof, each lapping the last, to cover the joint where the two slopes meet.
- rigid foam · also foam board, foam boards
- Stiff boards of plastic foam (XPS is usually pink or blue) that insulate. Dogs chew it, so it always goes behind plywood or under the floor.
- rim joist · also rim joists, rim, band joist
- The joist that runs around the outside edge of a floor frame, capping the ends of the other joists.
- rip · also rip cut, ripping, ripped
- A cut along the grain, making a board narrower.
- roost bar · also roost bars, roost
- The perch chickens sleep on at night. A 2×4 laid flat lets them cover their toes with their feathers in winter.
- rough opening
- The framed hole in a wall for a door or window, a little bigger than the door itself.
- round-over · also roundover, rounded over
- An edge rounded with a router bit or sandpaper so it's comfortable to touch.
- router
- A spinning-bit tool for cutting grooves, dadoes and rounded edges.
- run · also chicken run
- The fenced, roofed pen where chickens spend the day outside the coop.
- rung · also rungs
- One of the cross bars between the two side rails of a ladder-style piece.
- runner · also runners
- A rail that something slides along, like the strips a storage tote hangs from by its rim.
- running bond
- A paver or brick pattern in straight rows, each row shifted half a paver from the one before. The easiest pattern to lay.
- sag · also deflection
- How much a shelf or board bends down in the middle under load. Plans here check it against a limit.
- sapwood
- The pale outer wood of a tree, just under the bark. It rots far sooner than heartwood outdoors.
- sawhorse · also sawhorses
- A short trestle, usually used in pairs, that holds boards and sheets at a comfortable height for cutting. Not something to stand on.
- screed · also screeding, screeded
- A straight board dragged across the top of a form in a sawing motion to strike wet concrete or sand flat; also to do that.
- screed pipes · also screed pipe, screed rails
- Two straight 1″ pipes laid on the base as rails. A board dragged along them strikes the sand to an even 1″.
- screw eye · also screw eyes
- A screw with a closed loop for a head, for hanging things from a board.
- sealant strip · also tar strip
- The black tar line across the middle of an asphalt shingle. The sun softens it and it glues down the row above so wind can't lift it.
- sealing washer · also sealing washers, sealing-washer
- A rubber washer under the head of a roofing screw. Snugged down, it squashes and seals the hole.
- seat deck
- The flat platform cushions sit on: plywood or slats on a frame.
- semi-transparent stain
- An outdoor stain that colours the wood but lets the grain show. It soaks in, blocks some sun and fades gently instead of peeling.
- setback · also setbacks
- The minimum distance a town requires between a structure and the property line.
- sheathing
- Sheets (OSB or plywood) nailed over a frame to stiffen it and cover it.
- sheet mulching
- Covering grass with flattened cardboard before you add soil on top. The grass dies in the dark and the cardboard rots into the soil.
- shelf pin · also shelf pins
- A small metal peg that pushes into a 1/4″ hole to hold an adjustable shelf.
- shim · also shims, shimmed
- A thin wedge slipped under or behind something to level or plumb it.
- shoulder · also shoulders
- The step where a tenon meets the full-width board. Shoulders sit tight against the leg.
- shoulder height · also height at the shoulder
- A dog's height from the ground to the top of its shoulder blades (the withers), measured standing. Dog houses, doors and crates are sized from it.
- shutoff valve · also shut-off valve, shutoff
- The small tap on the wall behind a toilet or sink that turns its water off. Keep it where a hand can reach it.
- siding
- The weatherproof outside layer of a wall.
- sight opening
- The hole in the front of a frame you see the picture through. It is smaller than the glass, because the glass edges hide behind the frame's lip.
- silica dust · also silica, crystalline silica
- The fine dust from cutting or grinding concrete, pavers and stone. Breathing it scars the lungs for good (silicosis). Cut wet and wear an N95 or better.
- sisal · also sisal rope
- A stiff natural rope made from agave fibre. Cats love scratching it, and it doesn't snag claws the way looped carpet can.
- skid · also skids
- A long timber laid on the ground or gravel that a shed floor sits on, so the shed can be dragged if moved.
- slat · also slats, slatted
- A narrow board laid with gaps between it and the next one, so rain runs through and air dries the wood.
- slump
- How runny wet concrete is. Low slump is stiff like peanut butter; high slump pours like a milkshake. You want it stiff: wetter concrete is weaker.
- softwood
- Wood from evergreen trees (pine, fir, cedar). Most lumber at home centers.
- spacer · also spacers, spacer block
- A scrap block cut to an exact size and used to set a gap or a height the same every time, instead of measuring each one.
- spade bit
- A flat, paddle-shaped bit for fast large holes in wood.
- span · also spans
- The unsupported distance between two supports.
- spar urethane
- A clear finish made to flex with outdoor wood and resist sun.
- speed square
- A small triangular metal square for marking 90° and 45° lines and guiding a circular saw.
- spigot · also spigots
- The little tap near the bottom of a barrel (or on the house wall) where you fill a watering can or connect a hose.
- spray adhesive
- Glue in an aerosol can. Spray both surfaces lightly, wait until tacky (about a minute), then press together.
- square · also out of square
- Exactly 90°. A square box has equal diagonals. Also the tool used to check it.
- squeeze-out
- Glue that oozes from a clamped joint. Scrape it off when it turns rubbery, or it blocks stain.
- stainless · also stainless steel
- Stainless steel fasteners: won't rust or stain cedar. Best (and priciest) for outdoor work.
- standoff · also standoffs
- A spacer that holds a panel a little away from the wall, leaving room behind it (for pegboard hooks, for example).
- staple gun · also staple guns
- A hand or electric tool that shoots short U-shaped staples into wood. Press the nose flat and firm before you squeeze, or the staple stands up.
- starter hole · also starter holes
- A hole drilled inside a cut-out so a jigsaw blade can get in to start cutting.
- starter strip · also starter course, starter strips
- The first, hidden row of shingles along the bottom edge of a roof, with the tabs cut off. It seals down the first real row and covers its slots.
- stencil · also stencils, stenciled
- A thin sheet with letters cut out of it. Hold it flat and dab paint through the holes to get clean letters.
- stile · also stiles
- A vertical frame member at the side of a door or face frame.
- stop block · also stop blocks
- A block clamped to a saw fence or bench at a set distance, so you can cut many pieces exactly the same length without measuring each one.
- straw
- Dry hollow stalks left after grain is harvested. As dog-house bedding it stays dry and warm; hay and blankets soak up moisture and stay damp.
- stretcher · also stretchers
- A rail between legs near the floor that stops a table or chair from wobbling.
- stringer · also stringers
- On a chair or lounge, one of the long side boards the seat slats sit on. It carries the weight from the seat to the legs.
- structural screw · also structural screws
- A hardened, coated screw rated to replace lag screws in framing (brands: Spax, GRK, FastenMaster).
- stud · also studs
- A 2×4 (or 2×6) board, about 8′ long; also each vertical 2×4 inside a wall.
- stud finder
- A tool you slide on a wall that beeps over the wood studs behind the drywall. Studs are usually 16″ apart.
- subgrade · also sub-grade
- The dug-out soil at the bottom of the hole that the gravel sits on. Firm, undisturbed soil is best; loose fill settles.
- supply line · also supply lines, water supply line
- The flexible water pipe from the wall to a toilet or sink. Never drill or screw near it.
- t1-11 · also T1-11
- Grooved plywood siding panels that act as the wall and the outside finish of a shed in one sheet.
- table saw
- A saw with the blade sticking up through a table; you push the wood through. Powerful and dangerous: use the guard, riving knife and a push stick.
- tack cloth
- A slightly sticky cloth that picks up fine sanding dust just before you finish.
- tannin
- A natural chemical in cedar and oak. It reacts with plain steel and leaves black stains, which is why cedar gets stainless screws.
- tannins · also tannin
- Natural chemicals in cedar and oak. They react with plain steel and leave black streaks, which is why cedar needs stainless or coated screws.
- tenon · also tenons
- A tongue on the end of a board, cut to fit tightly in a mortise. Glued, it's one of the strongest joints.
- thumbprint test
- Press your thumb into fresh concrete: when it leaves a print about 1/4″ deep and no water fills it, the surface is ready to edge, groove and finish.
- tilt-out · also tilt out
- A cabinet front hinged at the bottom that tips forward, carrying a tray (here, a trash bin) out with it.
- tin snips
- Heavy scissors for cutting sheet metal such as drip edge and roof panels.
- tip-over · also tip over, tip-overs
- Tall furniture falling forward, often when drawers are open or someone climbs it. Anchor it to a stud.
- toe kick · also toe-kick
- The recessed space at the bottom front of a cabinet so your toes fit under it.
- toe-screw · also toe screw, toe-screwed, toenail, toe-nail, toenailed
- Driving a screw at an angle through the side of one board into another, when you can't reach the end.
- toggle bolt · also toggle bolts, toggle anchor
- A wall anchor whose wings open behind drywall. For hollow walls when there's no stud; holds far less than a stud.
- top plate · also top plates, double top plate
- The horizontal 2×4 nailed across the top of a wall's studs.
- torsion box
- A hollow panel made of two thin skins glued to a grid of ribs. It is much stiffer and lighter than a solid board of the same thickness, like a hollow-core door.
- tote · also totes, storage tote
- A plastic storage bin with a lid and a lip (rim) around the top edge.
- track saw
- A circular saw that runs on a straight rail, for clean cuts in big sheets.
- trammel
- A strip of wood or ruler with a nail at one end and a pencil or saw at the other, used to draw or cut a circle.
- trestle · also trestles
- A table base made of two upright end frames joined by a long rail, instead of four legs at the corners.
- trim-head screw
- A screw with a very small head that sinks just below the surface, so it is hard to see.
- trowel · also troweled, trowelled
- A flat steel blade for smoothing concrete or spreading mortar.
- turnbuckle · also turnbuckles
- A metal link with a threaded hook or eye at each end. Turning the middle body pulls the ends together to tighten a line.
- turning · also turn the pile
- Forking a compost pile over into the next bay (or back into the same one) so air gets to the middle and it heats up again.
- twist · also twisted
- A board whose ends are not flat to each other, like a propeller. Skip twisted boards at the store.
- underlayment · also roofing felt, felt paper
- Roofing paper or synthetic sheet laid on the roof deck under the shingles as a second water barrier.
- upholstery fabric · also fabric
- Heavy woven fabric made for seats. Look for a "double rub" rating of 15,000 or more on the label.
- upright · also uprights
- A vertical board that other parts hang from or rest on, like the posts of a rack.
- utility knife
- A knife with a replaceable razor blade. A hooked blade cuts shingles from the back.
- veneer
- A very thin layer of nice wood glued over a cheaper core, as on birch plywood.
- waste side
- The side of your pencil line that becomes scrap. Cut there so the blade's kerf doesn't make your part short.
- wet saw
- A saw with a diamond blade cooled by a stream of water. Rent one to cut pavers: the water keeps the dust down.
- wheelbarrow
- Also your concrete mixing tub: mix up to two bags at a time in it with a hoe.
- winding sticks
- Two straight sticks laid across the ends of a surface. Sight across their tops: if they aren't parallel, the surface is twisted.
- wire mesh · also welded wire mesh, remesh
- A grid of welded steel wire set in the middle of a slab's thickness to limit cracking.
- wood filler
- A putty for filling nail holes and small gaps before sanding and painting.