If a piece of Airbrix furniture fails in the field, it is almost never the joinery. It is the wood arguing with the climate it is now living in. Timber wants to come into equilibrium with the air around it — and Malaysian air, especially indoors with air conditioning, is doing something different to that timber every single day.
The numbers, briefly
Indoor relative humidity in a Klang Valley condominium typically swings between 55% and 80% depending on the air-conditioner settings, the time of day and the season. Translate that to wood equilibrium moisture content and you're looking at a board that wants to sit somewhere between 10% and 14%. Outdoor covered terrace? Add another 2–3%.
This is the trap: a lot of imported furniture is built in temperate workshops where timber has been dried to 6–8% moisture content. It looks perfect when delivered, then over six to eighteen months it absorbs moisture, expands, and the joints either creak open or the tops cup.
What we do differently
Every board that enters the Airbrix workshop has been kiln-dried specifically to a 9–11% target. We hold it in our timber room for a minimum of three weeks before cutting — long enough for the boards to acclimatise to workshop conditions. The workshop itself is climate-controlled to 62% RH year-round, which lands timber neatly inside the band where it will live happily in your home.
Joinery design helps too. Mortise-and-tenon joints with hide glue tolerate seasonal movement better than modern PVA glue on butt joints. Floating-panel construction on table tops lets the wide boards expand and contract across the grain without stressing the frame.
What you can do
Two simple things: don't park your new sofa directly under an aircon vent (the localised drying can crack legs), and if you have a wood dining table, oil it once every six months for the first two years. We supply a small bottle with every table that leaves the studio.
If you live in a particularly wet kampung-house environment with no air-con, tell us. We will spec a slightly higher moisture content target and use joinery that's more forgiving of seasonal movement.
A footnote on chengal
Malaysian chengal is wonderful and stubborn. It moves less than American walnut once acclimatised, but it dries reluctantly — most kilns won't take it below 14%. We accept it at 13–14% for structural parts only, and let it sit for six weeks. Chengal floors and tables are why your grandparents' furniture has outlived three couches.