Available now · Surrey, London, Kent & the South East
Water containment

Watertight, whatever holds the water.

GRP is not just for roofs. We line garden ponds, pools, fountains, wet rooms and water-containment bunds with the same seamless fibreglass system, so there are no joints to leak.

A seamless, three-coat system

A liquid primer goes down first, then the base resin with chopped-strand matting, then a sanded, pigmented topcoat. It adheres fully to the base and conforms to virtually any shape or size.

Black GRP fibreglass-lined plunge pool with grey stone surround

What we line

Ponds, pools & fountains

Fully waterproof linings in a wide range of colours, with marine-safe pigments and a smooth, easy-to-clean finish.

Wet rooms & tanking

A seamless waterproof layer of fibreglass beneath the finished tiling, preventing leaks where they usually start.

Why GRP for water

Every Smartseal roof comes in your choice of 92 BS4800 colours, with a smooth or non-slip finish to suit the job.

See the full palette & finishes

Frequently asked questions

Yes. We use marine-safe pigments and a fully cured, inert finish, so a GRP lining is safe for ponds, fish and aquatic plants once it has cured.

Yes. GRP bonds to and conforms to almost any shape, so we line existing ponds, pools and water features as well as new builds.

A wide range, from natural dark tones for ponds to brighter finishes for pools and water features. Bespoke colours are possible on larger jobs.

Yes. The same seamless fibreglass system works as a waterproof layer beneath wet-room tiling, stopping leaks where they usually start.

Accredited & approved

Topseal approved installer Confederation of Roofing Contractors approved member BBA Agrement certified Cure-It GRP roofing system Res-Tec waterproofing systems Flexitec Platinum approved installer GRP Roof Platinum approved installer
Ready when you are

Talk to us about
your project.

A director will visit, measure up and talk you through colours and finishes. No pressure, no follow-up sales calls.