Reinforced bitumen membranes, built-up-felt-roofing, bituminous membranes are some of the ways roofing felts are often described. This type of roofing is often composed of multiple layers of membrane.
Roofing felt membranes are made of modified bitumen compounds with a polyester or glass fibre reinforcement. The upper and lower surfaces of the membranes vary according to the purpose and function of that particular membrane. For example, the final felt layer (often referred to as the cap sheet) will likely have a slate or mineral finish to the upper surface and a thermo fusible film underside.
To determine the most suitable flat roof felt system for your project, and the right combination of membranes and insulation there are 5 important steps to consider.
Before looking at different methods of waterproofing a flat roof with felt, it’s important to consult the NFRC Safe2Torch Checklist for any identified items, use of a direct torch-on application and use of a TorchSafe™ solution. Safe2Torch is a positive initiative which puts safety first at the design stage of newbuild and refurbishment projects.
The TorchSafe™ design and specification service reduces the risk of roof fires when using gas torches on roofs.
In general, there are a number of different solutions when deciding how to felt a flat roof.
22nd May 2020. 11:26 am
Not all bitumen is created equally. The original discovery of bitumen made from oil in ancient times means that it has been used in roads and roofing for thousands of years.
Read full post22nd May 2020. 10:57 am
Liquid waterproofing systems provide perhaps the most cost-efficient means of waterproofing a flat roof on the market.
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