Expansion inside J channel?
Is it common practice to cut siding a little short at J channel to leave room for expansion inside the j channel?
I’m not familiar with the whole process of siding a house, so I can imagine one might leave room for expansion at the corners.
Thanks for the help!
For vinyl siding, yes. also you don't nail it fully into the wall sheathing, but leave the nail a bit loose so the siding hangs on the nail, and can expand and contract.
The siding maker should offer installation instructions. for an example
which says, in part,
Always leave room for expansion and contraction into receiving
channels like outside cornerposts, inside cornerposts, and
J-Channel. If the temperature is above 40°, leave 1/4"; if the
temperature is below 40°, leave 3/8".