Basement Insulation

Nope, it is Owens Cornings brand of extruded polystyrene foam plastic. Same material used in the meat packing trays and take out food containers. It is treated with bromides to retard burning. There is no outgassing of any chemicals.

I can't think of any direct health problems. It might collect dust. White painted gypsum board would reflect light better.

TB

It probably gets disturbed every time someone walks on the floor upstairs.

I know the jury is still out on fiberglass exposure, but I personally would feel "uncomfortable" with a source directly overhead.

Jim

Ed, that wacky tobacco is getting to you again. :-)

Mick,

There is some unconfirmed concern about the glass fibers, but I don't think you have much to worry about. Personally I would likely cover it if it were mine, just to keep things cleaner and neater.

Considering that cheap furnace filters are made out of similar materials and if you open an portable or whole house ac unit you will see similar material in the cabinet, I would not worry about it. If you were going to die from it it is already too late.

Considering the asbestos debacle, I would think that if anything was showing up as a problem, they would have stopped using fiberglass in furnace filters long ago.

Duh, I was thinking of the pink foam plastic sheets, not the plain old fiberglass.

Oh. I see. That is different. I seem to remember that it is OK for use without a fire barier, but I would check that. Other than that I don't see a problem. I don't think I would bother covering it.

The problem that came to my mind. If he was to staple some plastic under the floor, then the vapor barrier would be on the wrong (unheated) side of the fiberglass.

I believe they are highly flamable and must be covered but check manufacturer's specs to be sure.