Topseal Direct Lay System

Cold liquid applied membrane for the flat roofing refurbishment market. The system provides a guaranteed watertight roof without the need to remove the existing roof.

The Topseal Direct Lay System can be applied directly to felt, asphalt and concrete. Topseal Direct Lay Primer is laid directly onto a clean, dry and structurally sound substrate. Used with a 600 g/m² roofing grade reinforcement mat, roofing resin and topcoat, the system provides a direct lay roofing system suitable for new builds and refurbishment roofs on both domestic and commercial properties.

Features and benefits:

  • Up to 20-year guarantee with optional guarantee with optional guarantee protection certificate.
  • Ten-year insurance backed guarantee available.
  • Direct lay to felt, asphalt and concrete.
  • Cold liquid applied reinforced membrane.
  • To be installed by Topseal trained approved installers only.
  • Minimal disruption on site and no landfill as no removal of the pre-existing roof.
  • No new decking boards required.
  • Minimal risk of water penetration into the building whilst work is carried out.
  • Faster installation than standard GRP system.
  • Full range of BS/ RAL colour topcoats.
  • Available with anti-slip finish.


  • Topseal Direct Lay Primer.
  • Topseal Resin.
  • 600 g/m² reinforcement mat.
  • Topseal Topcoat.

General information

Uniclass 2015

Pr_35_31_68_63 Polyester resin waterproof coatingsPrimary


J31/10 Warm deck roof coating

J31/110 Cold deck roof coating

J31/120 Warm deck roof coating

J31/5 Cold deck roof coating

Specification data - Polyester resin waterproof coatings

Product Reference

Topseal Direct Lay System


Dark Admiralty Grey




BS 4800, colour

Consult manufacturer and insert requirements.

RAL, colour

Consult manufacturer and insert requirements.


As drawing

Contractors choice

Product Options


A wide range of GRP edge trims are available, consult manufacturer with requirements.

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