Fiberglass Roofing (GRP)

Tradecall Roofing are fully trained and have been installing GRP roofs for over 20 years!

GRP (Glass Reinforced Plastic) also known as fibreglass. This consists of a mat of glass fibre strands used in conjunction with a flexible resin compound which cures to a tough and durable finish.

Unlike most GRP contractors we always apply 2 layers of GRP matt

Fibreglass Flat Roofing

A properly laid fibreglass roof also known as GRP Roofing, will last for at least 30 years with no measurable deterioration. The roof must be laid onto a dry deck in dry conditions at a temperature not below 5°C. The resins and top coats should be suitable for use in GRP Roofing


The decking boards should be Sterling OSB They should be fixed to the roof structure using ring shank nails or screws with a minimum penetration of 25mm, which should be used at 300mm centres down the length of each joist covered by the boards. All the boards must have their joints staggered to increase the strength of the roof (see below).

For any more information about our roofing service, please don't hesitate to get in touch.

    Key Features of GRP flat roofs

  • Materials are specially formulated for roofing applications
  • 20 year guarantee on materials
  • Long Lasting
  • Can withstand foot traffic
  • High flexibility
  • Adjusted for seasonal variations in temperature
  • Available with a choice of top coats (Any BS4800 Colour)
  • Resistant to wind uplift
  • Fire retardant