I have had roof panels (Gapro 12x95) stored outdoors for several years, and now it's time to nail them up. Everything is straight and nice, and mostly still in its plastic packaging.
Now I've moved the panels into the garage where it's a bit warmer than outside, but I still have an RH of 45% in the garage.
The question is, how long does this need to dry indoors? Should I move it further into the house where it's warmer and probably a bit drier?
The panels will be painted white before being nailed up.
I have a feeling I'll end up with 40sqm of propellers if I do this wrong....
Now I've moved the panels into the garage where it's a bit warmer than outside, but I still have an RH of 45% in the garage.
The question is, how long does this need to dry indoors? Should I move it further into the house where it's warmer and probably a bit drier?
The panels will be painted white before being nailed up.
I have a feeling I'll end up with 40sqm of propellers if I do this wrong....
I believe the best thing is to nail up the panel as quickly as possible.
Once it is nailed up, it stays straight,
and cannot twist/bow as much while it dries,
as if it were lying loose.
Once it is nailed up, it stays straight,
and cannot twist/bow as much while it dries,
as if it were lying loose.
is the panel in bundles or are they loose "boards"?
The panel is wrapped in plastic in the package, but the plastic is not sealed.
The panel is supposed to be painted white before installation, but it might warp before you've finished painting...
Sent from my X10i using Byggahus
The panel is supposed to be painted white before installation, but it might warp before you've finished painting...
Sent from my X10i using Byggahus
but is it bundled together? didn't ask if it was wrapped in plastic.
if it is in bundles, it helps somewhat when drying so it doesn't become so crooked. but being in bundles and having had the packages outdoors gives another problem: there might be mold between each board.
if it is in bundles, it helps somewhat when drying so it doesn't become so crooked. but being in bundles and having had the packages outdoors gives another problem: there might be mold between each board.
It's not just that it will warp; the panel will also shrink and leave gaps if it's not dry when installed.
If you have space indoors, bring in the bundles, remove the plastic, and secure them with straps so everything is fixed while it dries. Ideally, with battens between layers; otherwise, it will take forever.
Otherwise, it's probably best to bring in one bundle at a time, paint and put them up as quickly as possible, i.e., as soon as the paint has dried. However, that way, you won't avoid the shrinkage.
If I have to keep lumber indoors for more than a day, I usually try to ensure air can reach both sides so it dries evenly or turn the boards daily. It's no guarantee against warping or bowing, but it helps.
If you have space indoors, bring in the bundles, remove the plastic, and secure them with straps so everything is fixed while it dries. Ideally, with battens between layers; otherwise, it will take forever.
Otherwise, it's probably best to bring in one bundle at a time, paint and put them up as quickly as possible, i.e., as soon as the paint has dried. However, that way, you won't avoid the shrinkage.
If I have to keep lumber indoors for more than a day, I usually try to ensure air can reach both sides so it dries evenly or turn the boards daily. It's no guarantee against warping or bowing, but it helps.
Need to measure the boards after they've been indoors for a few days; if they maintain the correct dimensions reasonably well, shrinkage might not be a problem, and then I think it's right to paint and nail them quickly. If they have a significant overmeasure, it probably won't be possible to fit the boards in place without gaps forming as they dry.