What are the main stages of GRP flat roof installation?

Replacing a flat roof with a Topseal GRP roof can be divided into four main stages. For a straightforward job such as a domestic garage roof (area c. 20m2), Cotswold Fibreglass Roofing Ltd, your local Topseal Approved Installer, would expect a team of two people to complete the flat roof installation ( re-decking, lamination and topcoating) within one day.

Preparing and decking the roof

This stage of installing a flat roof involves removing the old roof (often a perished felt roof covering) down to the supporting timbers. The joists are then checked for condition and, if required, repaired. The roof is then redecked with high quality 18mm-thick tongue-and-groove OSB3 (oriented strand board).

Fixing the edge trims

The next stage in a GRP flat roof installation consists of fixing GRP edge trims to the edge of the roof. The positioning and configuration of these edge trims enables the Topseal GRP laminate to be formed to virtually any specification.

Laminating the roof

To install a new flat roof successfully requires attention to detail and expert craftsmanship at all stages. During the vital laminating stage, joints between decking, gutters, GRP trims and protrusions (such as rooflights) are carefully ‘bandaged’ before the entire roof is laminated with a layer of GRP.

Topcoating and finishing

To replace a flat roof properly involves ensuring a suitable aesthetic and performance finish. At this stage, the roof is topcoated with high performance pigmented polyester roofing resin and your choice of colour and finish.

The site is then cleared and, with the new flat roof installation complete, you can start enjoying your new Topseal GRP roof.
It really is that straightforward and the results are long lasting and durable. Contact us for more information and your FREE no-obligation quotation.