Thread: Expanding Foam as Insulation
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Old 28-02-2012, 13:46   #9
Barewolf
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Re: Expanding Foam as Insulation
thanks for the replies, i will look into how much it will cost for the rockwool.

---------- Post added at 13:46 ---------- Previous post was at 13:24 ----------

Quote:

Expanding foam is good for some circumstances but I wouldn't dream of using it as insulation under a floor because as it expands it will lift the floor boards up, then once it's set your buggered.
The boards are 1" Thick between joists of 1 1/2 ft, you sure that expanding foam will push those up? They seem pretty solid.

Quote:

Also I would recommend leaving the joist's air to breath, you don't want moisture getting trapped and rotting the timber.
What about the plastic sheeting under the concrete? Isn't that supposed to be the damproofing?

Also, this timber is treated, its not supposed to rot for 10 years. Wont that also work in my favour?


I've attached a few pics so you can see a bit of what im referring to.

Floorboards

http://i55.photobucket.com/albums/g1...sponia/ws2.jpg

Underfloor

http://i55.photobucket.com/albums/g1...sponia/ws1.jpg
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