Felt flat roofs are incredibly popular and cost effective across the UK. Also known as built-up roofs (BUR) here are some reasons why felt flat roofs are commonly used:
Cost-effective: Felt flat roofs are generally more affordable compared to other flat roofing options, such as single-ply membranes or liquid-applied systems. This makes them an attractive choice for budget-conscious homeowners or property owners.
Durability: Felt roofs can provide excellent durability when properly installed and maintained. They have the potential to last for several decades, depending on the quality of the materials used and the installation techniques employed.
Waterproofing: Felt roofs are designed to be highly resistant to water penetration when installed correctly. The multiple layers of felt, often reinforced with fiberglass or other materials, create a waterproof barrier that helps protect the underlying structure from moisture damage.
Flexibility: Felt roofs can be installed on a variety of flat or low-sloped surfaces, making them a versatile option for different architectural designs. They can be applied to a wide range of substrates, including timber, concrete, and metal.
Thermal insulation: Felt roofs can provide some degree of thermal insulation due to the layers of materials used. While not as effective as dedicated insulation systems, the built-up layers of felt can offer some thermal resistance and help reduce heat loss.
Repairability: In the event of damage, felt roofs can be relatively easy to repair. Depending on the extent of the damage, individual sections of the felt can be replaced or patched without requiring a full roof replacement, which can be cost-effective.
Fire resistance: Felt roofs typically have good fire-resistant properties. The multiple layers of bitumen and mineral felt help to slow down the spread of flames and meet fire safety regulations.
It’s important to note that felt roofs do have some limitations. Over time, they may be susceptible to wear and tear, including cracking, blistering, or lifting at the edges. Regular maintenance and inspections are necessary to address any issues promptly and prolong the roof’s lifespan.
When considering a felt flat roof, it’s crucial to work with a professional roofing contractor who has experience with built-up roofing systems. They can guide you in selecting the appropriate materials, ensure proper installation techniques, and provide advice on maintenance to maximize the performance and longevity of your felt roof.
