Waterproofing: Below Ground, Retaining Walls, Masonry Walls

Enviro 700X is a single-component polyurethane membrane suited for vertical below-ground waterproofing.

• Easy to apply by roller or brush on vertical masonry or concrete
• Excellent elongation and flexibility under soil and moisture pressure
• Resistant to root intrusion and common ground chemicals

Enviro HP1200 is a spray-applied polyurea membrane ideal for vertical retaining walls requiring seamless, rapid-application waterproofing.

• Fast cure — trafficable or backfillable within minutes
• Seamless waterproofing with superior mechanical and chemical resistance
• Perfect for large or complex vertical surfaces and detailing

Hydrostatic 1 is purpose-designed for waterproofing masonry block retaining walls subjected to hydrostatic pressure. Its cementitious composition allows it to integrate with the block substrate, forming a dense, breathable barrier that resists both positive and negative water pressure.

In retaining wall applications, it offers several practical advantages:

• Excellent bond to masonry substrates – penetrates and keys into blockwork for strong mechanical adhesion.

• Hydrostatic pressure resistance – suitable for below-ground walls retaining soil and groundwater.

• Breathable yet waterproof – allows vapour transmission while preventing liquid water ingress.

• Compatible with damp substrates – ideal for site conditions where achieving completely dry blockwork is unrealistic.

• Robust and impact resistant – performs well behind protection board and drainage layers.

From a construction standpoint, Hydrostatic 1 is particularly effective on block retaining structures where surface porosity and mortar joints require a coating that can fill, level, and seal irregularities without reliance on laps or welds.

When correctly detailed with appropriate drainage, protection, and termination methods, Hydrostatic 1 delivers a durable, structurally integrated waterproofing solution for masonry retaining walls operating under sustained hydrostatic load.