On flat roof areas subject to occasional maintenance foot traffic, an aggregate or anti-slip finish can be applied to minimise the risk of a slip or fall. For walkways or balconies the Topseal HD System is recommended with an anti-slip finish

Vapour check /12mm Ext. Ply sub-deck
18mm OSB3 deck
450g/m2 Reinforcement Mat
Topseal Roofing Resin
Topseal Topcoat Layer
Topseal GRP Edge Trim
Topseal Roofing Resin

The Topseal system comprises of a waterproofing laminate consisting of 450g/m2 Topseal Roofing Grade Reinforcement Mat saturated with Topseal Roofing Resin.

When the laminate has cured (normally within 1 hour) it is over-coated with Topseal Topcoat.

Upstands / Edge Trims / Corners Details
For ease of detailing, a range of preformed Topseal edge trims are available in a variety of shapes and sizes to suit most changes in direction and termination points.

These are installed in accordance with our recommendations. Once fitted they are overlapped by the main laminate to provide a completely seamless system.

Upstands / Edge Trims / Corners Details
Every Topseal installation is backed by our class leading 25 year materials guarantee and is supported by the installer’s guarantee on workmanship for the same period. Topseal HD is available for applications where a 30 year materials and workmanship guarantee is required. Each installation can also be covered by Topseal’s optional guarantee protection certificate and Insurance backed guarantee

Key Features

  • Guaranteed for 25 years
  • BBA certified
  • EXT.F.AA Fire Rated to BS476: Part 3
  • Good environmental credentials
  • ISO:9001 and ISO:14001 registered
  • Cold applied – no heat or naked flames
  • Quick curing – fast application rate
  • Completely seamless – no joints or seams
  • UV and chemical resistant
  • Fully reinforced – flexible
  • Suitable for flat (zero falls) / pitched roofs
  • Full range of BS4800/RAL colours available – including Simulated lead and copper finish.
  • Isocyanate and halogen free
  • Available with anti-slip finish
  • No toxic rainwater run-off



Every Topseal installer is allocated a unique verification number to prevent 3rd party misrepresentation. You should always ask any Topseal installer for their verification number.