Is non-rated EPS worth using?
I have a free source of EPS foam used in packing. The sheets are 12-16in. W x 4-8ft L x 1/2-3/4in thick. They are rather soft and compress easy but when stacked to say 2 in thick they feel more usable.
I was thinking of gluing them into boxes to air seal around electric boxes and such and baffles at the eaves, My house was on a wet dirt crawl space so I dug it out to about 7ft, as far as i could go before hitting too much granite( northern NH) and sat it on an ICF foundation, can I use them on the outside to insulate the footings?
Also the basement floor is compacted sand and stone mix, 2 layers of 6mil poly sheeting,2in of XPS foam and 2in of concrete. The foam is even with the top of the footings and the concrete on top, this was done to save headroom, but I find condensation forming at the edges near the walls where there is no foam, not a big deal but I want to finish off one section as a playroom for the kids.
Was planning on using a cheap moisture resistant click type vinyl flooring. Do you think 1/2 or 3/4 inches of the EPS under the floor would be a bad or good idea? I saved a few hundred pieces of this stuff and can get 4-8 more per week, so what do think? use it or chuck it? thanks for the help.