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Dual Seal®

Product catalog summary

Overview
The DUAL SEAL® is a dual-sealing, below-grade waterproofing system designed for ease of installation and environmental friendliness. It combines high-density polyethylene (HDPE) with Sodium Bentonite Clay to create a robust, self-sealing membrane.

Physical Properties

Supplied in rolls of 1.22 m x 7.32 m.
Color: Grey/Black.
Membrane thickness: 3.5 - 4 mm.
Unaffected by microorganisms and freeze/thaw cycles.
Installation temperature range: -30°C to +55°C.
Non-toxic and environmentally friendly.
Elongation at ultimate failure: 700%.
Tensile strength: 27.50 N/mm².
Puncture resistance: 43 kg.
Hydrostatic water head resistance: 46 m.
No water migration under or through the membrane.
Permeance hydraulic conductivity: 2.7 x 10^-13 cm/sec.

Advantages

Prevents water tracking between membrane and concrete.
High puncture resistance and long life expectancy of over 100 years.
Quick and easy installation without the need for priming or heat welding.
Self-healing capabilities for mechanical damage.

Applications
The DUAL SEAL® system is suitable for below-grade civil engineering constructions such as sub-level walls, tunnels, structural slabs, and subways. It is available in Standard, Saltwater, and Lagging Grade (LG) types, with the LG type designed for blindside installations.

Warranty and Certification
The RPM Belgium Vandex Group© guarantees products to be free from defects and will replace defective materials. The company is ISO 9001 certified, ensuring quality control standards are met.

Contact Information
For more information, contact RPM Belgium N.V., Alteco Technik GmbH, Hermeta GmbH, Monile France SARL, Alteco Polymer Systems, Vandex International Ltd, Vandex Isoliermittel GmbH, or Vandex AG.

Catalog excerpts

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

Open the catalog to page 1

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® products...

Open the catalog to page 2

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 SEAL...

Open the catalog to page 3

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 HDPE/Bentonite...

Open the catalog to page 4

Dual Seal®

Dual Seal®

Catalog excerpts

All RPM BELGIUM VANDEX catalogs and technical brochures