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Marsh 10-06-2011 06:01 PM

Insulating cement wall
 
Rigid Foam Board, firring strips and drywall?

TimMauriello 10-08-2011 04:24 PM

Quote:

Originally Posted by Marsh
Rigid Foam Board, firring strips and drywall?

I'm new to the boards, but have been doing a lot of research on this for an upcoming project. These are by far the best forums on the web, btw!

Best practice is 2" foam on walls, tape seams well. Cut foam sheets for rim joists and seal well with spray foam.

Standard 2x4 walls are preferred for framing as it allows room for electrical and plumbing and gives you something solid to attach shelves, tv's, etc to.

Bottom plate needs to be pressure treated and even better is to add a sill gasket underneath.

federer 10-12-2011 10:53 PM

Quote:

Originally Posted by TimMauriello (Post 744518)
I'm new to the boards, but have been doing a lot of research on this for an upcoming project. These are by far the best forums on the web, btw!

Best practice is 2" foam on walls, tape seams well. Cut foam sheets for rim joists and seal well with spray foam.

Standard 2x4 walls are preferred for framing as it allows room for electrical and plumbing and gives you something solid to attach shelves, tv's, etc to.

Bottom plate needs to be pressure treated and even better is to add a sill gasket underneath.

what if a leak develops behind the foam?

concretemasonry 10-12-2011 11:02 PM

If a leak develops, that proves you did not do everything properly before.

Usually due to tie budget or personal reasons/opinions.

Dick

federer 10-12-2011 11:04 PM

right. so being human a mistake may have been made causing the leak. so in this case would open cell be better in case of leak? or should the average consumer just get closed cell and hope everything was properly installed?

1jumper 10-13-2011 05:44 AM

I'm doing the same thing to my basement. This site was really helpful: http://www.eere.energy.gov/buildings...s/db/35017.pdf


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