[Greenbuilding] Polyurethane door cutouts underslab, and exterior below grade?

[Don Jennings]

Are you thinking about Fastfoot from Fab-form?

http://www.fab-form.com/

Take care,
Don

On 6/20/07, Clarke Olsen <colsen at taconic.net> wrote:
>
>    The only foam not recommended below grade is the expanded
>    styrofoam, that's the light, crumbly white stuff which can absorb
>    water. Under footings, I dunno, you would have a nice flat surface
>    to build on.... Foam will support weight however; I once parked a
>    concrete septic tank filled with rocks (solar storage) on a 1" sheet
>    of extruded styrofoam.
>    A nice system for footings, made by I don't remember, uses a plastic
>    sheet, stapled to 1 x 3's on stakes to form the footing. Not only do
>    not have a stack of 2 x 10's with concrete on them (even the 1 x 3's
>    stay clean), but you now have moisture barrier/thermal break under
>    your footing.
>    Clarke Olsen
>    Spencertown, NY
>
> On Jun 18, 2007, at 6:40 PM, Stewart Abbey wrote:
>
> > I have collected about 2000 sq.ft of scrap window cutouts from a Does
> > anyone know if this type of polyurethane is OK to use below grade?
> > What about under my footings?
>
>
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