Fibreglass (GRP) Roofing

A GRP flat roof, or fibreglass roof as it’s also known, is one of the most popular flat roofing solutions in the UK. GRP stands for Glass Reinforced Polyester, a composite material formed by strengthening plastic with fine fibres made of glass.

This single ply laminate has been used as a reliable means of covering and waterproofing roofs for over 60 years, although it’s popularity has soared in recent years thanks to new systems such as Cromar PRO GRP. As well as commercial and domestic buildings, GRP has been used on a wide array of other applications, from boats and lorries to water tanks and ponds.

The installation of a GRP roofing system is highly regarded for its simplicity and safety, while the finished product it produces is recognised as having a lifespan that easily betters that of a felt roof.

GRP flat roofs begin with a layer of catalysed resin being applied to good quality, completely dry roof decking, ideally OSB3 wood. A layer of fibreglass matting then laid on top followed by another layer of catalysed resin to complete the system. Once cured, a fire retardant top coat resin is then applied to completely weatherproof the roof and give it a more attractive finish.

Rubber Flat Roofs Repairs and Replacement

When it comes to house extensions, garages and smaller buildings, its common for the flat roof to be protected by asphalt, felt or gravel. However, EPDM rubber is fast becoming the perfect solution for flat roof repairs.

Felt Flat Roof

Torch-on roofing, or torch-down roofing as it is also known, is a flat roof covering solution that involves three layers of modified bitumen (felt) melt-welded onto the roof surface and each other with the use of a blowtorch to create an impenetrable, waterproof seal.

Traditionally, the three layers used in this process are a vapour control sheet, reinforced felt and a cap sheet with mineral finish. Using three layers of felt is required by building regulations for habitable areas of a home. For sheds and garages, only two layers may be needed.

The dangers of applying these layers with the use of a hot flame makes torch-on felt roofing a job best left to the professionals.

Torch-on roofing felt is known as one of the quickest and most reliable flat roof installations readily available in the UK and has become a popular system for these reasons.