Retaining wall waterproofing

Choose a Retaining-Wall System Pathway

Compare cementitious, bituminous and polyurethane membrane options for your retaining wall.

Not sure where to start? Ask H2O
Cementitious Retaining Wall System
Mineral-based membrane

Cementitious Retaining Wall System

A mineral membrane pathway considered for sound concrete or masonry where preparation, pressure exposure, curing and protection can be addressed.

Typical use
Accessible concrete or masonry walls where the selected cementitious membrane is approved.
Key consideration
Confirm substrate condition, cracking, water pressure, curing and protection before backfilling.
Confirm first
Negative-side pressure, active leaks, movement joints or existing coatings.
Explore cementitious pathway
Bituminous Retaining Wall System
Flexible below-ground coating

Bituminous Retaining Wall System

A bituminous pathway considered where the accessible wall face can be detailed, waterproofed, protected and drained before backfilling.

Typical use
Accessible external face of suitable concrete or masonry before backfilling.
Key consideration
Primer, membrane, protection and drainage must form a compatible assembly.
Confirm first
Internal or negative-side exposure, persistent pressure or mixed membrane chemistries.
Explore bituminous pathway
Polyurethane Retaining Wall System
Nominated liquid membrane assembly

Polyurethane Retaining Wall System

A polyurethane pathway that must be selected as one documented primer, membrane, detailing and protection assembly.

Typical use
Only where the complete polyurethane system is approved for the substrate and below-ground exposure.
Key consideration
Confirm moisture limits and primer, detailing, membrane and protection compatibility.
Confirm first
No products are mapped until H2O confirms a complete assembly.
Explore polyurethane pathway
Problem-led product selection

Popular solutions

Frequently selected products for defined waterproofing, remedial and drainage applications.

H2O Guard 290
Brick & masonry

H2O Guard 290

Help reduce rainwater absorption and water staining on compatible porous masonry surfaces.

View H2O Guard 290
ACTFLEX 400 Clear
Remedial clear coating

ACTFLEX 400 Clear

A transparent maintenance option for suitable tiled balconies and showers where the existing finish is retained.

View ACTFLEX 400
ACTFLEX 989 CWP
Flexible cementitious

ACTFLEX 989 CWP

A two-part cementitious membrane for nominated internal, external and below-ground waterproofing applications.

View ACTFLEX 989
UV SPEC
UV-stable membrane

UV SPEC

A trade-focused membrane option for compatible exposed external and internal waterproofing applications.

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MAGdrain Drain Seal
Drain odour control

MAGdrain Drain Seal

A WaterMark-certified magnetic drain seal for compatible floor wastes and drainage outlets.

View MAGdrain

Need help choosing a system?

Tell H2O Supplies what you are waterproofing, the substrate and the site conditions. We can help narrow the product pathway and sequence. Formal specifications and remedial reporting remain separate consultancy services.

Product selectionSystem compatibilityCoverage guidanceApplication pathway
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Waterproofing and construction brands

Access established membrane, repair, drainage and applicator-product ranges through H2O Supplies.