Felt Roofing

What is Roofing Felt ?

This roofing material is predominantly, but not exclusively installed on flat roofs. You can also find felt roofing on garden sheds, garages and extensions.

 

Felt Roofing consists of two or three layers of felt sheet which form a dense and impenetrable barrier. It is also coated with waterproof materials, such as tar, in order to prevent the ingress of moisture.  Multiple layering is vital to ensuring that the roof is completely waterproof.

What are the benefits to Felt Roofing ?

  • Felt Roofing is a proven roofing material, which has been one of the most common choices for many years
  • It can be applied to any size of job, whether this is from small to large
  • Felt Roofing is highly durable, therefore offering strong water and wind resistance
  • It can also be applied to any type of surface, whether it is flat, pitched or curved.
  • Felt Roofing can be applied in various ways

The process to installing Felt Roofing

To install Felt Roofing there are two methods or techniques by which felt roofs can be fitted:

Hot works

  • The ‘pour and roll’ technique.  This particular technique involves the pouring of hot bitumen, as the felt is unrolled along the roof. This way it ensures any voids are filled and when cooled, the bitumen acts as an adhesive that bonds and seals the layers.
  • Alternatively, the felt roofing can be ‘torched on’, this is a technique that involves heating the felt with a gas torch so that no bonding is required. In general, this technique can be used for both small and medium-sized roofs, as well as in flat roof repairing.

Cold works

  • Cold adhesive can be applied evenly onto the roof and the felt unrolled into position. This method is obviously easy and safe compared to the hot works technique.
  • Self-adhesive membranes can also be placed in the correct position on the roof and then peeled off the release paper. However, this is not suitable for uneven surfaces or application in cold 

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June 2022