The different types of flat roofing products?

There are many different types of flat roof coverings – mineral felt, torch-on felt, mastic asphalt, GRP and Fibreglass, PVC single-ply membrane, TPO single-ply membrane (Thermoplastic Polyolefin) and EPDM single-ply membrane (Elastometric membranes).

Built up felt roofing consists of two to three layers of bitumen sheet that have been bonded together using either hot bitumen or adhesive. With an average life expectancy of 15 to 30 years, flat felt roofing is economical but has a tendency to crack as it ages and the temperature changes.

Torch-on felt is a process that was developed in order to reduce the need to pour and roll hot bitumen. However it does come with the risk of fire as operatives have to use a naked flame to heat the felt during installation. Plus, if installation is of poor quality, there is the chance of inadequate bonding, leading to leaks.

Mastic asphalt flat roof

A blend of asphalt, limestone aggregate and limestone powder, mastic asphalt is the ideal material for applications that require a smooth, seamless and durable surface. Offering exceptional waterproofing integrity, mastic asphalt may be one of the most traditional construction materials in the world, but it it continues to be popular and moving with times, now contains advanced polymer foundations to improve performance. However, it can become brittle once set and needs thermal protection.

Lightweight, strong and durable, GRP roofing systems can take foot traffic and accommodate any movement that naturally occurs in buildings. They come in a variety of colours and accessories, including trims, outlets, cappings and tilt fillets.

PVC single-ply membrane is vinyl chloride monomer (VCM); the gas is polymerised to produce a vinyl resin that is then compounded to produce a material known for its flexibility, durability and colour options. Suitable for all flat roof constructions and situations, they are ideal for domestic, commercial and industrial flat roofs and are known for their value for money.

Thermoplastic Polyolefin (TPO) single ply membrane is a more recent option for flat roofing and unlike PVC single-ply membrane, doesn’t contain any chlorinated ingredients. It has proven itself to have excellent weathering properties.

EPDM single-ply membrane is reusable if the material has been loosely laid or fixed mechanically and is known to be highly durable. In particular, it is highly resistant to weathering and UV light.

The Protan roofing system is the preferred application for High-Tech Membrane Roofing; with its unique anti-slip finish, Protan High Performance Membranes are safe to walk on, are aesthetically pleasing and having produced the world’s first roofing membrane in 1971, has a proven track record of innovation and excellence for more than forty years.

The Protan SE range of PVC single-ply membranes are suitable for new builds, refurbishments, extensions, porches and dormers. Containing stabilisers, the roofing system is 100% waterproof, resistant to high and low temperatures. It is also UV and fire resistant. When installed correctly and with adequate insulation, the Protan roofing system offers the ultimate in complete, durable roofing technology.