DUAL SEALThe most site friendlyDual-Sealing below gradewaterproofing system to date!

RPM/Belgium N.V.

An Company

Sodium Bentonite(Already millions of years old)

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 worldwide market leaders in the waterproofing industry.

THE MOST UNIQUEDUAL WATERPROOFINGSYSTEM AVAILABLE TODAY!DUAL SEAL

Advantages

Self-healing Prevents tracking of water between membrane

and concrete surfaces Resistance to hydrostatic water head of 46 m Over 100 years of life expectation

High puncture resistance Non-toxic and environmentally friendly Quick and easy installation over green concrete Does not require priming and heat welding Installation temperature -30C to +55C

Usage

The HDPE and Sodium Bentonite are laminated together to forma tough sheet membrane. It is easily installed and typicallyapplied on below grade civil engineering constructions suchas: sub level walls, cut and cover tunnels, under structuralslabs and subways.

High density polyethylene(EPA Estimates)

?

Life expectancy

0 100 200 300 700 800 ?YEARS

SITAC

H2Obentoniteconcrete

HDPE

Self-healing of mechanical damage

Dual Seal System

The Dual Seal membrane is available in three different types:STANDARD, SALTWATER and LAGGING GRADE (LG). The DualSeal LG is especially designed for blindside installations or whereshotcrete is to be blown directly to the face of the membrane, whereasthe Saltwater type is used in Saline and/or brakish water conditions.Sodium Bentonite, granules, waterstops, self-swellable mastic andother accessories complete the Dual Seal system.

Over 10 million m2 have been installed worldwide. Engineers and consequently end-users around the globepraise the DUAL SEAL SYSTEM for its simplicity, ease of use and its extraordinary waterproofing security.

Western and Eastern European projects

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 Bentoniteand forms a 100% watertight seal!

Dual Seal vs. Geotextile Bentonite Systems

1

2

3

1. Water enters.2. Bentonite hydrates

preventing further waterpenetration.

3. No tracking of waterbetween membraneand concrete.

1. Water enters.2. Bentonite hydrates. 3. Geotextile fabric allows

for tracking of waterbetween membrane and concrete.

1

2

3

DUAL SEAL SYSTEM GEOTEXTILE BENTONITE SYSTEMS

PHYSICALPROPERTIES VALUE TEST METHOD

Supply: 1.22 m x 7.32 rollsColour: grey / blackTotal membrane thickness: 3.5 - 4 mmMembrane swelling capacity (Sodium Bentonite): approx. 6 timesResistance to micro organisms (bacteria, fungi, mould, yeast): unaffected D638 type 4 DumbellFreeze/thaw cycles: no effect before or after installationInstallation temperatures: -30C to +55CNon toxic: do not ingest% Elongation-ultimate failure of membrane: 700% FTMS 101BTensile strength: membrane N/mm2: 27.50 ASTM D412Puncture resistance: 43 kg ASTM D751 MethodResistance to hydrostatic water head: 46 mResistance to water migration under membrane: no penetrationWater migration at or through joint: no penetration / instant sealPermeance hydraulic conductivity (entire membrane): 2.7 x 10-13 cm/sec.

DUAL SEAL Technical Details*

* Above based on 20 mil HDPE/Bentonite System.

Authorised applicator:

RPM

/Bel

gium

N.V

. - 04

/200

2 - D

oc. 6

60/G

B

RPM/Belgium N.V.Industriepark Noord H. Dunantstraat 11B B-8700 TieltTel.: + 32 (0) 51 / 40 38 01 Fax: + 32 (0) 51 / 40 55 90E-mail: rpm@rpm-belgium.be http://www.rpm-belgium.be

Alteco Technik GmbHRaiffeisenstrae 16 D-27239 TwistringenTel.: + 49 (0) 42 43 / 92 95 0 Fax: + 49 (0) 42 43 / 33 22E-mail: info@alteco-technik.de http://www.alteco-technik.de

This brochure is not intended to establish product recommendations for any installation. To the best ofour knowledge the information contained herein is true and accurate at the time of issue, but is subjectto change without prior notice. No part of this brochure may be copied without written authorisation ofRPM/Belgium N.V. - RPM/Belgium N.V.

WarrantyRPM/Belgium N.V. and Alteco Technik GmbH warrant all goods to be freefrom defects and will replace materials proven to be defective. The giveninformation corresponds to our present standard of knowledge. However, itis the buyers responsibility to determine the suitability of the products inindividual cases by conducting own tests.

RPM/Belgium N.V. and Alteco Technik GmbH are subsidiaries ofRPM Inc., USA, a public owned American company and are leadingmanufacturers of industrial flooring systems, coatings, sealants andmembranes. RPM/Belgium N.V. and Alteco Technik GmbH are certi-fied by Lloyds to the ISO 9001 quality standard.