Membrane waterproofing

UNDERSEAL Waterproofing with Termite and Crack Reduction Protection. Used as a waterproofing membrane/vapor retarder which virtually eliminates water vapor transmission upward through concrete slabs on grade and elevator pits. In addition to protecting floor finishes and indoor air quality, UNDERSEAL™ also acts as a termite barrier.

Concrete slabs and foundation walls almost inevitably crack, providing entry to water, contaminates, and insects. Underseal™ not only seals out these harmful substances, but has been proven through over 30 years of use in highway pavements, to maintain the seal, even if the pavement above it cracks.

UNDERSEAL™ acts as a barrier to:

• Water & Moisture

• Toxic Mold

• Radioactive Radon Gas

• Methane

• Pesticides

• Termites

UNDERSEAL™ Advantage

Compared to a simple vapor barrier, Polyguard's UNDERSEAL™ Underslab Waterproofing Geomembrane protected geomembrane has the following advantages:

1. The thickness of the geomembrane exceeds even the best vapor barriers.
2. The sealant layer creates a complete waterproofing membrane.
3. Tested as a seal against termites, pesticides, radioactive radon gas, and methane.
4. Reduces the amount and severity of cracks in the slab above.
5. Proven to maintain a permanent seal, even after cracks occur in the slab, or joints in the
slab shift.
6. The sealant layer has self healing properties.
7. Extreme durability to construction traffic.
8. Forms a mechanical bond to the concrete slab.
9. The puncture resistance of the UNDERSEAL™ Underslab Waterproofing Geomembrane
Protected Geomembrane tests out at 316 lbs. (143,000 grams), exceeding class A vapor
barrier requirements by 6500.