Self-Adhesive HDPE Waterproofing Membrane

Reliable HDPE membrane solutions for waterproofing, concrete protection and below-ground construction. Choose the right membrane for your project requirements, substrate conditions and bonding needs.

HDPE Self-Adhesive Sand Coated Membrane

HDPE Fully-Bonded Membrane

Where Sand Coated Membrane are used

Basement waterproofing.
Raft foundations.
Concrete protection.
Cementitious overlays.
Selected below-ground applications.

Key Benefits

Continuous bonding with concrete.
Reduced lateral water movement.
Integrated waterproofing system.
Durable HDPE waterproofing barrier.
Suitable for basements, foundations, tunnels, and underground structures.

Key Benefits

Sand-coated bonding surface.
Self-adhesive application.
Water-impermeable HDPE layer.
Strong adhesion to prepared substrates.
Efficient installation.
Suitable for compatible concrete surfaces.

Where Fully Bonded Membranes are Used

Basement slabs.
Retaining walls.
Foundations.
Tunnels.
Underground car parks.

A self-adhesive HDPE waterproofing membrane with a sand-coated surface, designed for basement, foundation, concrete protection, and selected below-ground applications requiring a compatible cementitious interface.

A high-performance HDPE waterproofing membrane designed to bond with concrete, helping create an integrated waterproofing system for foundations, basements, tunnels, retaining walls, and underground structures.

HDPE Self-Adhesive Sand-Coated Membrane Installation

The sand-coated membrane is applied to a properly prepared substrate using its self-adhesive backing. Correct alignment, lap treatment, detailing, and protection are essential for reliable waterproofing performance.

The fully bonded membrane is installed as part of an integrated concrete waterproofing system. The membrane must be correctly positioned, detailed, protected, and bonded to the concrete during concrete placement.

HDPE Fully Bonded Membrane Installation

Step captions:

Prepare the substrate
Clean the surface and remove dust, loose particles, oil, standing water, and sharp projections.
Repair and smooth the surface
Repair cracks, voids, honeycombing, and uneven areas before membrane application.
Position and align the membrane
Unroll the membrane and align it carefully with the waterproofing layout.
Remove the release liner
Peel away the protective liner gradually during application.
Press the membrane firmly
Apply pressure with a suitable roller to improve contact and minimise trapped air.
Seal laps and details
Treat overlaps, corners, terminations, penetrations, and construction joints according to the approved system detail.
Inspect and protect
Check for wrinkles, open laps, blisters, and damage before installing the required protection layer.

Step captions:

Prepare the substrate or formwork
Ensure the surface is stable, clean, aligned, and free from sharp projections and contaminants.
Position the membrane
Install the membrane in the approved direction with the concrete-bonding surface facing the concrete.
Secure the membrane temporarily
Use approved fixing methods to hold the membrane in position without damaging it.
Treat laps and details
Seal overlaps, corners, penetrations, terminations, and construction joints as specified.
Inspect before reinforcement
Check the membrane for continuity, secure laps, correct detailing, and visible damage.
Place reinforcement carefully
Install reinforcement and associated works without puncturing, folding, or displacing the membrane.
Cast concrete against the membrane
Place and compact the concrete carefully so it bonds with the designated bonding surface.
Inspect and complete protection
Check the exposed areas and protect the waterproofing system during subsequent construction work.

Frequently asked questions

Q1.What is the difference between the sand-coated and fully bonded HDPE membranes?

The HDPE Self-Adhesive Sand-Coated Membrane has a self-adhesive backing and granular sand-coated surface, making it suitable for applications requiring a compatible cementitious or protective interface. The HDPE Fully Bonded Membrane is designed to bond with poured concrete and help reduce lateral water movement between the membrane and concrete.

Q2. Do both membranes require protection after installation?

Yes. Both membranes must be protected from puncture, impact, sharp objects, construction traffic, and damage during subsequent work. The fully bonded membrane also requires inspection before reinforcement and concrete placement, while the sand-coated membrane may require suitable protection before backfilling or installing a cementitious overlay.

Q3. How should I select the correct membrane for my project?

Select the sand-coated membrane when the project requires a self-adhesive waterproofing layer with a granular surface suitable for a compatible cementitious or protective interface. Select the fully bonded membrane when the project requires an integrated bond with poured concrete and reduced lateral water movement. Final selection should consider the substrate, construction sequence, water pressure, joint details, project design, and installation requirements.

Q4. Where are these HDPE membranes used?

Both membranes can be used in selected waterproofing and concrete-protection applications, including basements, foundations, raft slabs, retaining walls, and below-ground structures. The sand-coated membrane is suitable for compatible cementitious interfaces, while the fully bonded membrane is more suitable where integrated bonding with reinforced concrete is required

Q5. What are the key benefits of the sand-coated HDPE membrane?

The sand-coated membrane combines a durable HDPE waterproofing layer with a self-adhesive backing and granular surface. It supports cold-applied installation, provides a suitable interface for compatible cementitious layers, and can be used for basement waterproofing, foundation protection, concrete protection, and selected below-ground applications.

Q6. What are the key benefits of the fully bonded HDPE membrane?

The fully bonded membrane is designed to form an integrated bond with poured concrete. This helps create continuous waterproofing protection, supports reduced lateral water movement between the membrane and concrete, and makes the membrane suitable for selected basements, foundations, retaining walls, tunnels, underground car parks, and reinforced-concrete substructures.