Reference
Fixing furniture to the wall: when it's required and what to watch for
In short
A tall unit can tip forward. Fixing it to the wall stops that. Your Kamba plan tells you whether it's required or recommended, where the brackets (small L-shaped parts) go on the unit and how many fixing points to plan for. The fixing that goes into the wall depends on your wall: you choose it in store, with the sales assistant's advice. Think about your wall from the start of the project. If in doubt, have a professional come and look.
Why a unit tips over
A unit tips over when its weight moves in front of its base: a drawer being pulled, heavy things on top, a child climbing. The taller and shallower the unit, the more easily it tips. The risk grows if the floor or the wall isn't straight: a unit on a floor that slopes forward goes over sooner. Even empty, a tall unit can tip over.
When the plan asks you to fix it
Wall fixing is required if the unit is 68.6 cm tall or more, if it goes in a child's room, or if it is more than 4.5 times taller than it is deep (for example 60 cm tall for 12 cm deep). Above 7 times, the builder refuses the unit and suggests a lower height. For other units, wall fixing is recommended: we strongly advise fitting it. The shelving unit, the wardrobe and the floor-standing under-slope unit have two anti-tip brackets, small L-shaped parts, on the “Hardware” page of their plan, at every height. The alcove unit has no brackets: it is screwed to the alcove walls with battens, wooden strips fixed to the wall. You don't have to apply these rules yourself: the builder applies them to your measurements.
Recognise your wall
A plasterboard wall sounds hollow when you knock on it. A solid wall (brick, block, concrete, stone) sounds solid. If you don't know, choose “Plasterboard” in the builder: the plan then assumes the weakest wall. And ask a professional for advice.
Your wall and the fixing
Fix into a solid wall if you can, or into a stud, one of the upright bars hidden behind the plasterboard. On plasterboard, use a fixing made for plasterboard and suited to the weight of the loaded unit. Never a screw alone in plasterboard: it pulls out. In store, show the sales assistant the “Show this in store” box on the “Hardware” page of your plan, and ask for advice: they will tell you which fixing to buy and how to fit it. Then follow the fixing's instructions.
Fixing the unit, in five moves
- Put the unit in place and make it level (straight).
- Screw the brackets to the unit where the plan shows.
- Fix them to the wall with the fixing you chose, following its instructions.
- Check that the fixing holds before loading the unit.
- Then load it, heavy things at the bottom.
Special cases
Floor-standing under-slope unit: the brackets are fixed to the wall behind the unit, with the same rule.
Under-slope unit fixed to the slope: the top of the unit is also screwed into the rafters, the roof beams; the plan calculates the length of these screws. If you can't find a rafter, ask a professional for advice before loading the unit.
Alcove unit: the whole load of the shelves rests on the batten fixings. The plan gives the load each shelf is calculated for; the wall fixings must be able to carry it. Choose them to suit your wall. On plasterboard, have a professional come and check your wall before loading the shelves.
If in doubt
Unsure about your wall, your floor or a step? Have a professional come and look before loading the unit. Kamba calculates your unit from your measurements; it can't see your wall. The loads given in the plan apply to a unit built as shown, with the planned materials and dimensions, and fixed to a suitable support, chosen after advice in store or from a professional.
See also: standard shelf dimensions
See also: shelving hardware and conversions
Read the full guide: how to build custom shelving
Have a question about building with Kamba? Read the FAQ
