Emer Proof HDPE

Self adhesive, polymer modified bitumen waterproofing membrane,

incorporating cross laminated HDPE film

Uses

Emer-Proof HDPE is used to waterproof:

Foundations

Basements

Retaining walls

Tunnels

Advantages

• Self adhesive - allows installation without the use of heating torches and their associated problems
• Uniform thickness - eliminates any likelihood of thin application commonly found with liquid applied membranes
• Cross laminated High Density Polyethylene (HDPE) carrier film ensures dimensional stability whilst allowing adequate flexibility during installation and service
• Excellent adhesion to vertical and horizontal surface
• Excellent resistance to chlorides, sulphates, alkalis and acids
• Good tear and puncture resistance
• Excellent tensile strength

  Properties

Specification Clause

Where so designated on the drawing, surfaces shall have a self-adhesive modified bituminous waterproof membrane applied. The membrane shall be 1.6 mm total thickness, incorporate a cross laminated HDPE film and utilise a selvedge strip to ensure bitumen to bitumen bond at longitudinal joins. Areas shall be prepared and the membrane applied in accordance with current Emer-Proof HDPE data sheet, paying attention to priming requirements.

Maintenance

No special requirements, any damage identified during normal inspections to be repaired/ replaced as appropriate.

Application instructions - Surface preparation

All surfaces to which Emer-Proof HDPE is applied must be smooth and free from contaminants and any loose material. Rough concrete should be 'faired up' before application.

Priming

Emer-Proof Self Adhesive Primer should be applied at the rate of 6-8 m2 / litre to surfaces which will have Emer-Proof HDPE applied. The coverage rate for the primer will vary depending on the porosity of the surface being treated. Allow the primer to dry for at least 15 minutes at temperatures of 25 oC and above, and up to 60 minutes when ambient temperatures are approaching 5 oC. Priming should only be carried out on surfaces which will be covered with Emer-Proof HDPE the same day.

Application

Planning the installation of the membrane is important to ensure joins occur in suitable locations and not at corners and penetrations. Longitudinal overlaps should be 50 - 60 mm and transverse laps 70 - 80 mm. Application of membrane should always start from lowest point on a surface to ensure laps are self-flashing. Apply suitable lengths of Emer-Proof HDPE membrane by first carefully aligning the roll and applying an initial 300 mm of material, then pull the siliconised release paper and press the membrane on to the prepared surface. Take care not to incorporate air bubbles under the membrane or wrinkles in the membrane.

When finishing the membrane into perimeter flashings or around penetrations, use Plastiseal, a bituminous rubber mastic to assist in achieving a waterproof seal.

Protection

Emer-Proof HDPE is not suitable for long term exposure to UV. The membrane should therefore be protected in some way within 3 months of application. When the membrane is to be backfilled such as with basement applications, Emer - Proof HDPE should be protected from physical damage by using drainage protection system

Limitations

Do not apply to uncured green concrete or to concrete with high moisture content levels. In such applications blistering of membrane may occur due to vapour pressure building up at interface of membrane and the substrate. Similarly, Emer-Proof HDPE should not be applied to substrates subject to hydrostatic pressure from below the membrane. Emer-Proof HDPE must be protected from UV exposure within 3 months of application.

Supply

Emer-Proof HDPE: 1 m wide, 20 m long roll

Emer-Proof Primer: 20 litre pail

Coverage

Emer-Proof HDPE: approx. 18.9 m2 / 20 m roll, allowing for overlaps

Emer-Proof Self Adhesive Primer: 6 - 8 m2/litre

Note: No allowance has been made for wastage.

Storage

12 months in cool, dry conditions i.e. not exceeding 25 oC.

Storage above this temperature may reduce storage life.