GPR stands for Glass reinforced plastic and is made from very fine fibres of glass that once bonded results in a composite material properly called FRP. Fibre reinfored polymer “Fibreglass” as it’s more commonly known, is an amazing material and once layed onto your roof it has been said in the industry that it will never leak…

Topseal is one of the countries leading GRP roofers and really worth a quotation. Visit www.topseal.co.uk to find out more.

A typical 25m2 roof can usually be completed within 1 day, and can be finished in many colours. There are two options that are avalible for different uses, for a dormer roof I would recommend the 450gm of glass content as the 600gm even though more expensive, was desinged for heavy foot traffic such as roof terraces/gardens.

A fiberglass roof will last the life of the building and with a standered 20 year guarentee with most suppliers you will never have to worry about leeks again.

The only thing that might happen is that the fibreglasse’s colour pigment may fade but you’re never really going to notice as most flat roofs aren’t visible. Just make sure you speak to your builder about choosing the right colour edging strips as this is the only piece that can be seen from the ground.