but if you're doing this where there is insufficient moisture in the ground
(like a desert area) to be absorbed by the top and cause expansion, then you
need a special switch which you flip to cause the sun to heat the top and
dry the top out (more) and contract - ergo, the top would cup upwards.......
These switches are available at the borg's for the low cost of $19.95.
If it's wet, then it expands. If it's wetted on just the bottom, then
it will curve upwards.
If it's generally damp and reaches equilibrium with both sides, then oit
depends on how the growth rings run. They straighten when drying and
tighten when wetted.
If it's plywood or veneered, then it could do anything.
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.