In order to understand the waterproofing advantages of a built-up felt roof, you need to know more about how the roof is constructed. A built-up felt roof is a type of roofing construction that waterproofs flat roofs. This is done as by the following steps:

  • Installing a layer of bituminous felt
  • Bonding the material to the previous layer

All in all, three layers are laid, with chippings to safeguard the felt material from the rays of the sun. In some instances, a mineral cap sheet is employed.

Defining Felt and Its Uses

According to roofers in Lichfield, felt is defined and used as follows:

  • The material consists of a mat of fibres. These fibres are coated on each side with a bituminous coating.
  • The felt surface is finished with a light sand.
  • The felt is used to keep out rain and is available in rolls that are 1 metre wide.
  • Felt comes in lengths of 8 metres to 20 metres.
  • A modern felt normally uses a high-performance polyester mat or a mat made of glass fibre.
  • Felt surfaces are coated with slate or sand granules to produce a mineral finish.

An Increased Life Span

The advantages associated with using high-performance felt have to do with longevity. A felt roof that is designed well normally lasts for approximately 15 years. If you use high-performance built-up felt, however, your roof can last twice as long. As a result, the expense per year is substantially lower.

When you make a selection for built-up felt roofing, you are choosing a covering which lasts longer than other roofing materials. As a result, this roofing upgrade is well-recognised for its waterproofing qualities.