SITEWORK & FOUNDATION
Rip-Proof Poly
If you're plagued by rips and tears in poly vapor barriers on
walls or under slabs, Tu-Tuf will save you hours of tedious
patching. The extraordinary strength of the high-density,
extruded polyethylene sheeting comes from its "grain," which is
created through a stretching process that aligns the molecules.
Two sheets are then "cross-laminated" with the grain positioned
at 90-degree angles. According to tests performed for
Sto-Cote, the product's distributor, Tu-Tuf has twice the perm
rating of ordinary 6-
mil poly and 3.6 times
the tensile strength
of 4-mil poly. Two
thicknesses are available:
a 3-mil sheet in
white or black, and a
black 4-mil sheet for
underground use. A
micro-perforated version
called Air-Seal is
also available