3 ms·
Add to that that "along-the-grain" also includes significant expansion and contraction due to humidity changes. I am in an old house where years of expand-cont
by foobarian 5y ago
Add to that that "along-the-grain" also includes significant expansion and contraction due to humidity changes.
I am in an old house where years of expand-contract cycles on the wood framing have managed to wiggle out nails in places to the point where they stick 1/4in above the drywall surface.
- lostlogin 5y agoEvery house here in New Zealand is wood, and humidity is pretty high. I have never seen this except for decking, where nails are a bad option. I’ve see nails move a lot after earthquakes (sort of tearing the framing and cladding). Maybe we don’t see this as the weather is nearly always humid as we don’t get a real winter (so we don’t have a humidity cycle)?
- foobarian 5y agoRight, it's all about the cycle. Our climate goes from intensely humid in the summer, to bone dry in the winter - both because cold air in the negative double-digit Celsius temps is physically dry, and because our heat is forced-air. Then there are periods of high A/C use which also dehumidifies the air.
- ad700x 5y agoI believe wood expansion is primarily across the grain. More than an order of magnitude difference between radial and longitudinal https://woodworking.stackexchange.com/questions/5871/which-direction-does-wood-expand https://woodworking.stackexchange.com/questions/5871/which-d... It varies significantly based on wood species.