What makes a wooden bed different
Mattress sizes by market, assembly from the carton, slat gaps, noise and bunk bed rules apply to every bed and are on the beds page. Moisture, species and filler apply to all timber and are on the solid wood furniture page. A bed built in solid wood has its own weak points.
The steel hardware in a wooden bed is strong. The wood around it is not always. A bed bolt passes through the post and pulls against a barrel nut set in a cross hole in the side rail. If that hole sits too close to the rail end, the short piece of end grain in front of it can split off under load. Hook-in brackets are often screwed into the end of the rail, which holds poorly. Posts drilled for two bolts at right angles lose a lot of section at one height.
Slats are the other difference. They are often cut from offcuts or a cheaper timber than the frame, and are frequently left unfinished. A slat with a knot in the middle or grain running out across it can snap even when its thickness is right. Long solid side rails, around two metres, can also bow or twist after cutting if the timber was not fully dry.
What we check on wooden beds
| Check | How it is checked | What fails |
|---|---|---|
| Slat grain and knots | Each slat in sampled sets looked at on both faces, especially the middle third of its length | Knots across the width, grain running out across the slat, splits at the ends |
| Slat section and span | Thickness and width with a calliper; unsupported span measured between rail and centre beam | Thinner than specified, span longer than drawn |
| Rail ends at cross dowels | Distance from barrel-nut hole to rail end measured; end grain checked for hairline splits before and after bolting up | Hole too close to the end, split opening when the bolt is tightened |
| Posts at bolt holes | Post section measured; both bolt holes checked for splits; bolt caps fitted | Split along a bolt hole, holes that meet inside the post |
| Brackets in solid wood | Screw length and whether screws go into end grain or side grain; bracket pulled by hand once assembled | Short screws into end grain, bracket that moves |
| Rail straightness | String line or straightedge along each side rail, top and side | Bow or twist beyond the agreed limit |
| Ledger strip and centre beam | Ledger fixing spacing (glue and screws); centre beam depth and leg fixing | Ledger loose or nailed only, shallow beam that flexes under hand load |
Common wooden bed defects and how they are classed
| Defect | Class |
|---|---|
| Rail end splits at the cross dowel when bolted | Critical |
| Post split along a bolt hole | Critical |
| Slat with a knot or cross grain in the middle third | Major |
| Slats thinner than specified | Major |
| Ledger strip loose or held only by nails | Major |
| Side rail bowed beyond the limit | Major |
| Crack along a glue line in a solid headboard panel | Major |
| Rough, splintery slat edges | Minor |
| Bolt cap missing or loose | Minor |
A split at a load-bearing joint is classed critical because the frame can drop under a sleeper. Your specification can set different classes.
Market rules that apply
The bed rules (EN 1725:2023 for adult beds, 16 CFR 1513 for children's bunk beds in the US, UK fire rules for upholstered headboards) are set out on the beds page. What a wooden bed adds is paperwork that follows the timber:
- Two or more species. Slats are often a different timber from the frame. Each species goes on the Lacey Act declaration and into EUDR due diligence.
- Plywood slats or headboard panels. These bring the bed under TSCA Title VI for the US.
- Upholstered headboard on a wooden bed. For the UK, see UK furniture fire safety.
The inspector records the timber of every component with photos, so the declarations match the goods.
Packing, transit and loading risks
- Unfinished slats and mould. Raw wood slats packed tightly in plastic can grow mould in a humid container. Ask for slats to be dry, sealed or packed with paper rather than plastic.
- Pre-fitted brackets. Brackets fixed to rail ends stick out and pierce cartons. They need end caps of card or foam.
- Rail ends. A side rail dropped on its end can split at the cross-dowel hole. End blocks inside the carton take the impact.
- Carved or panelled headboards. A wide solid headboard must be packed flat and supported along its length so it does not bend in a long carton.
After the drop test, the inspector assembles the bed again and re-checks the rail ends.
What to put in your purchase order
- Slat species, section and grade: no knots or cross grain in the middle third.
- Minimum distance from cross-dowel hole to rail end, and minimum post section at bolt holes.
- Bracket type, screw length and that screws go into side grain.
- Rail straightness tolerance.
- Ledger strip fixing (glued and screwed, at a stated spacing) and centre beam depth.
- Moisture target for rails and slats.
- Instructions telling the customer to re-tighten bolts after the first weeks, as the wood settles.
For a steel frame, see metal beds. For the bedroom set, see wooden sideboards. You can book an inspection online.