Xtratherm Insulation got wet

X00057906

Hi
In the process of insulating floor joists between downstairs and upstairs. Took up floor boards and plan putting in rockwool and xtratherm 150mm boards.
My question is , I acquired these boards from my uncle who had them stacked face down on top of each other for about 2 years . They weren't covered that well and got wet.i now have them stacked in my shed hopefully to dry. Would they still be ok to use if I let them dry for a week or that? Any help appreciated.

NobodyImportant

Why do you want to insulate between the upstairs and downstairs? Fair enough put in rockwool, more for a sound barrier, but insulating?

X00057906

Upstairs is vacant at the moment and won't be lived in for some time yet. One of the cold days I went upstairs and it was Warmer than downstairs with no heat on upstairs so losing all my heat to rooms that are not in use upstairs. Thanks for the reply

gman2k

How do you stop the heat going up the stairs????? It will find the easiest path!

X00057906

I have a door at the top of the stairs