Our 1960s house has the following wall construction, listed from inside to outside: Gyproc plasterboard with aluminum foil-clad exterior, then a 95mm stud frame and mineral wool board, and finally an asbestos cement board.
The plan is to replace the asbestos cement board with wood paneling and add some extra insulation at the same time.
I assume the aluminum foil is intended to function as a moisture barrier. Does it actually do that? When we take down the facade from the outside, will we have a good moisture barrier if we just make sure the aluminum foil is intact, and use tape or sealant to fix any potential leaks? Or should we try to incorporate construction film somehow?
The plan is to replace the asbestos cement board with wood paneling and add some extra insulation at the same time.
I assume the aluminum foil is intended to function as a moisture barrier. Does it actually do that? When we take down the facade from the outside, will we have a good moisture barrier if we just make sure the aluminum foil is intact, and use tape or sealant to fix any potential leaks? Or should we try to incorporate construction film somehow?
I'm joining this thread and raising it because I have a similar problem...
I'm in the process of renovating a toilet (house built in 1968) and yesterday I tore out all the plasterboard to install new wiring, new window frames, etc.
The plasterboard against the outer wall was the type of gypsum aluminum-clad plasterboard (as the thread creator talks about) and I'm now wondering how to seal everything when I put up the new plasterboard. Is it enough to lay ordinary construction plastic behind the new plasterboards I install and try to overlap it with the remaining boards? I can't tape or staple the plastic. How do I do it otherwise?
Grateful for any advice,
/Thomas
I'm in the process of renovating a toilet (house built in 1968) and yesterday I tore out all the plasterboard to install new wiring, new window frames, etc.
The plasterboard against the outer wall was the type of gypsum aluminum-clad plasterboard (as the thread creator talks about) and I'm now wondering how to seal everything when I put up the new plasterboard. Is it enough to lay ordinary construction plastic behind the new plasterboards I install and try to overlap it with the remaining boards? I can't tape or staple the plastic. How do I do it otherwise?
Grateful for any advice,
/Thomas
Typical that no one has an answer. We have just encountered the same concerns.
I replaced all the ceiling panels with aluminum-clad gypsum with plastic + new spacing panel and new gypsum.R RundBerg said:
I believe the aluminum cladding works poorly as a moisture barrier. There's no sealing against the wall, for example, and nothing between each panel either.
If you're going to seal against such panels, you'll probably just have to try to tape as best you can with the green tape.