This material consists of a layer of polyester resin which is reinforced with glass fibres to form a laminated layer.
Flat roof felt or grp.
The first being a 3 layer felt systems and second grp glass reinforced plastic.
Know your flat roof systems grp v epdm sterlingbuild 01303 258641.
Given the greatly superior durability of grp roofing to felt systems you might think that a grp flat roof would cost a great deal more.
While felt may be the most traditional form of flat roofing grp glass reinforced plastic fibreglass is now becoming more popular.
We all know epdm and grp are two of the fastest flat roof systems on the market today but which is best for your project.
Felt is not capable of substantial elongation without failure.
Grp roofing vs three layer felt system the majority of all loft conversions will have a flat roof constructed to them.
This is not the case.
Grp is not designed to be capable of any measurable elongation or movement but will withstand normal building movement through expansion and or contraction.
Its unique construction gives it waterproofing properties for one of the most durable flat roofs on the market.
The covering which makes them water tight can be achieved using various products with 2 standing out as the industries norm.
Although grp is pricier than felt or epdm rubber roofing systems when you factor in this impressive longevity along with the lack of maintenance needed resistance to all weather and attractive laminated finish fibreglass roofs can be worth every penny.
Grp fibreglass flat roofs.