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Under Slab Vapor Retarders

Under Slab Vapor Retarders & Barriers

Griffolyn® under slab vapor retarders and barriers prevent moisture from migrating into habitable space and causing problems such as deterioration of flooring adhesive, delamination, bacteria growth and warping. Even if new concrete is allowed to dry to the point where flooring can safely be installed, the absence or improper installation of a vapor retarder can later lead to expensive failures.

The need for an under slab vapor retarder in high humidity areas with high water tables is well understood. However, buildings in arid climates also need vapor retarders. Air conditioning the interior of the structure creates a significant difference in vapor pressure which causes moisture to be drawn out of the ground through the slab and into the space above. Made from durable and strong, internally reinforced polyethylene laminates, the Griffolyn® System withstands extreme temperatures and is highly resistant to punctures and tears.

Griffolyn® Underslab Vapor Barriers can be manufactured in sizes to meet project requirements up to 200’ × 200’ (61m × 61m), greatly reducing in-field seams and the potential for failure.

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CAD Details Sweets ARCAT CMD MasterSpec
Product Name Short Description Data Sheet / Submittal Info Data Sheet / Submittal Info Master Format Guide Specs
Griffolyn® Type-65 Reinforced high density 3 ply. General-purpose that meets the strength & permeance requirements of most applications
Griffolyn® Type-65 G Combines Griffolyn® reinforced high-density polyethylene with a non-woven geotextile. Has superior puncture resistance
Griffolyn® Type-85 Reinforced high density 5 ply. Offers greater strength & lower permeance for a higher level of integrity in roofing and under slab applications
Griffolyn® Type-105 Reinforced high density 7 ply. Extra strength and extra-low permeance needed to meet additional requirements
Griffolyn® VaporGuard® 3 ply. Combines HDPE/LLDPE & aluminum to provide extremely low permeance for special applications such as radon protection, cold storage, museums & computer rooms
Griffolyn® 15 Mil Green Co-extruded polyolefin membrane with superior puncture resistance, impact, and tensile strength
L20 Black High strength and durable membrane engineered to work in many environments.  
L30 Black High strength and durable liner material engineered to work in many environments.  
FabTape™ Asphaltic mastic. Creates a durable field seam between multiple vapor retarder sections
Griffolyn® Sealant Tape Pressure sensitive, adhesive backed polyethylene tape
Pipeboots Form-fitted boots to seal penetrations and pipes.

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Our growth and success is entirely dependent upon you, the customer. Tomorrow will no doubt offer new and more demanding challenges and today Reef Industries is prepared to continue offering valuable products that will protect and prolong the service life of our customers’ investments.