Which materials are best for a new flat roof?
A flat roof must be replaced if it is no longer adequately protecting your home, but what are the options? Here is a guide to the best materials for a flat roof.
Traditional bitumen and felt flat roofing
Your roof shelters your building’s interiors and occupants from the elements, so it is crucial you make the right decision for your building.
Flat roofs are traditionally covered in felt impregnated with bitumen and covered with gravel, which protects the felt. It is the cheapest choice for flat roof replacements, but the lifespan is only between 10 and 15 years. This is because it is likely to leak or break from pooling water.
Bitumen and felt is also not the most glamorous option, and repairs made to the roof will be easily visible. It is advisable to use these materials in areas not on show.
Built up roofing
BUR is formed of layers of bitumen finished with a gravel layer, which protects the membrane. This process has been used in buildings for over 100 years and is highly durable but also extremely heavy. Reinforcement may need to be added to the roof’s supporting structures to prevent any damage to your home. For flat roofing in Evesham, contact an expert such as http://lwroofing.co.uk/.
PVC membrane systems
This system has become the most popular option for replacement flat roofing. PVC membranes are durable and strong, with heat-welded seams forming a completely watertight seal.
PVC membrane systems require less maintenance and can be utilised as a base for terraces and roof gardens, which form attractive additions to the home. Although not the most low-cost roofing option, PVC is highly energy-efficient and is usually sold with a lifetime guarantee, which saves expensive replacement costs in the future.
EPDM flat roofing
EPDM, or a rubber roof, is a good value choice. It is more economical than PVC and is typically sold with a 25-year guarantee. This option is hardwearing and lightweight; however, it can lack the strength of PVC’s heat-welded seams.
An advantage of fibreglass is that it can be constructed in any colour and laid in a maximum of two layers for a jointless finish. Weatherproof and damage resistant, fibreglass roofing is also guaranteed for 25 years. This is the highest-priced option.