Flat Roof Grp Or Felt

They lasted a long time and were attractive to the eye but their performance was questionable.

Flat roof grp or felt.

Felt and grp fibreglass roofing systems are the most popular systems for flat roofs. Flat roofs for instance contained both felt and lead. In short any roof covering that can make a flat roof waterproof in one layer unlike roofing felt with its 3 layer system for instance. Grp roofing vs three layer felt system the majority of all loft conversions will have a flat roof constructed to them.

Felt is a cheaper material fibreglass is more expensive. Felt can only be applied directly onto a solid sound timber base as the base layer needs to be fixed to the boarding under no circumstances should felt be torched onto a grp resin roof. The first being a 3 layer felt systems and second grp glass reinforced plastic. Its unique construction gives it waterproofing properties for one of the most durable flat roofs on the market.

Epdm is highly flexible and can cope with building movement. Grp is a very tough material that can withstand falling branches or a dislodged tile slate falling off main pitched roof onto your new extension flat roof unlike felt or epmd. Sleek clean appearance extremely moss resistant. The popularity for both systems stems from different requirements however.

As a result a felt roof would typically only last 5 years or less. Grp roofs are less prone to damage than felt roofs and epdm roofs too. 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. This is not the case.

This means that over the years the chances of repairs are lessened and in turn more money will be saved. Grp is not designed to be capable of any measurable elongation or movement but will withstand normal building movement through expansion and or contraction. This kind of peace of mind is hard to put a price on. I would recommend using grp system for flat roof as it s a more robust material compared to felt or epmd rubber.

This material consists of a layer of polyester resin which is reinforced with glass fibres to form a laminated layer. The covering which makes them water tight can be achieved using various products with 2 standing out as the industries norm. Grp fibreglass flat roofs. This can include epdm rubber and fibreglass talked about above but commonly especially in the trade and in this article it refers to pvc tpo tpe and pib.

While felt may be the most traditional form of flat roofing grp glass reinforced plastic fibreglass is now becoming more popular. Epdm is the more affordable option out of the two and has an average price similar to that of a felt roof system.