Dual Seal®
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DUAL SEAL Site-friendly, dual-sealing, below-grade waterproofing system. RPM BELGIUM VANDEX GROUP

DUAL SEAL The most unique dual waterproofing system available today. The DUAL SEAL® waterproofing sheet membrane combines the strength, chemical and puncture resistance of high density polyethylene (HDPE) with the expanding self-sealing capabilities of Sodium Bentonite Clay, to form the most unique waterproofing system on the market today. Dual Seal® products have been used throughout the world to control water ingression in below grade areas of all types of building and civil engineering structures. Proven quality, minimal jobsite preparation time and ease of installation have made Dual Seal®...

SELF HEALING OF MECHANICAL DAMAGE █ █ █ Water enters the damaged HDPE membrane. The Sodium Bentonite starts to react with the water and begins the sealing process. Within a short period of time, the entire damaged area is covered with expanded Sodium Bentonite and forms a 100% watertight seal. DUAL SEAL vs GEOTEXTILE BENTONITE SYSYEM ® 1. Water enters 2. Bentonite hydrates preventing further water penetration 3. No tracking of water between membrane and concrete. 1. Water enters. 2. Bentonite hydrates. 3. Geotextile fabric allows for tracking of water between membrane and concrete. THE DUAL...

TECHNICAL DETAILS* PHYSICAL PROPERTIES grey / black Total membrane thickness TEST METHOD Membrane swelling capacity (Sodium Bentonite) Resistance to micro organisms (Bacteria, fungi, mould, yeast) Freeze/thaw cycles no effect before or after installation Installation temperatures % Elongation-ultimate failure of membrane Tensile strength: membrane N/mm2 Puncture resistance Resistance to hydrostatic water head Resistance to water migration under membrane Water migration at or through joint no penetration / instant seal Permeance hydraulic conductivity (entire membrane) * Above based on 20 mil...