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GRP Roof Calculator

Are you considering purchasing a GRP roof and want to calculate how much one would cost for your own unique situation? If so, the table below is for you. As you can see there are three main factors aside from the meterage which will affect the final price. The guarantee length, whether a balcony space is required and if an existing roof needs to be removed.

Table for Calculating GRP Roofing Costs

Guarantee Length

New Work: Basic spec/ OSB/ Trims

Added Balcony Spec

Strip/ Replace/ Re-deck/ Trims

15 Year

£75m²

£82m²

£92m²

20 Year

£80m²

£87m²

£97m²

25 Year

£86m²

£93m²

£100m²

30 Year

£94m²

£101m²

£110m²

40 Year

£110m²

£117m²

£127m²

If you would like any more information on a new fibreglass flat roof project, please get in touch or call us now on 01277 375 511 one of of the friendly RJ Evans team will be happy to help.