placing rigid foam under the slab will help to insulate the floor, keep
moisture out, and act to prevent slab movement incase the subgrade begins
to heave. The foam will take up some of the movement of the subgrade.
This is very common in commercial construction.
On Mon, 8 Apr 1996, Berry Kercheval wrote:
> >>>firstname.lastname@example.org said:
> > But I have never heard of
> > putting anything such as the above referenced rigid foam under the
> > Wouldn't this affect the integrity of the slab?
> Not if it's done properly. I see this kind of thing in homebuilding
> magazines all the time.
> Berry Kercheval :: email@example.com :: Xerox Palo Alto Research Center