Roller-Applied Waterproofing for Roofs, Balconies and Basements
Large flat and horizontal surfaces — roofs, balconies, terraces and basement slabs — need a waterproof layer that goes on fast over big areas and stays flexible through every freeze, thaw and heatwave.

Why seams are the enemy
Sheet systems on large flat areas mean seams and laps — and seams are exactly where water gets in. Detailing around upstands, outlets and penetrations adds yet more joints to fail. A liquid, monolithic membrane removes the joints entirely.
The solution: The GOAT (18kg Roller)
The GOAT (18kg) is a flexible, crack-bridging waterproof coating in a roller grade for covering roofs, balconies and basements quickly — forming a seamless, durable membrane that bonds to the substrate with no laps to lift or leak.
How it is applied
- Prepare a clean, sound substrate
- Detail upstands, outlets and penetrations first
- Roller-apply across the open area in the required coats
- Build a continuous, seamless waterproof skin
Benefits
- Seamless — no laps or joints to leak
- Roller-applied for fast coverage
- Flexible and crack-bridging
Frequently asked questions
Roofs and balconies? Yes — it’s designed for flat and horizontal areas as well as below ground.
Which grade for detailing? Use the brush/poured 7.5kg grade for tight details and this roller grade for open areas.
See Damp Proofing vs Waterproofing to choose the right product.