We have a pitched roof at the front of our semi detached house. We took the ceiling down and now have exposed joists and RSJs. With the weather being as it is, the wind blows into the pitched roof and through the gap between the RSJs into the front room. So as the ceiling is not going back up in a rush, I need to insulate the ceiling area somehow.
The pic shows the void in the pic roof. The space on the left has been filled with Celotex Insulation board. There is a 1 inch gap between the wooden joist and the 1st RSJ & a 1 inch gap between the 1st and 2nd RSJ. The wind blows through the two gaps, what's the best way to fill the gaps?
View media item 84052
Can we use expanding (fire retardant foam) to fill the gaps between the RSJs? Will this cause any damp/condensation issues when i put the ceiling back up? What's the building reqs regarding this?
The gap is too small to put anything up there except for rockwall or something similar. So if I can't use expanding foam, can i use rockwall or is there a better product?
The pic shows the void in the pic roof. The space on the left has been filled with Celotex Insulation board. There is a 1 inch gap between the wooden joist and the 1st RSJ & a 1 inch gap between the 1st and 2nd RSJ. The wind blows through the two gaps, what's the best way to fill the gaps?
View media item 84052
Can we use expanding (fire retardant foam) to fill the gaps between the RSJs? Will this cause any damp/condensation issues when i put the ceiling back up? What's the building reqs regarding this?
The gap is too small to put anything up there except for rockwall or something similar. So if I can't use expanding foam, can i use rockwall or is there a better product?