What is Built-up Felt Roofing?

One of the key functions of any roof is to protect your property from the elements. Therefore, effective roofing methods and materials are of utmost importance. 

Built-up Felt roofing is a roofing system comprised of multiple layers of waterproof roofing felt, which is coated with bitumen adhesive. Ideal for flat roofs and low-sloping ones, Built-up felt roofing, properly maintained, can last up to 15 years. 

What Does ‘Built-Up’ Felt Roofing Mean?

Built-up felt roofing is so called because of the method of applying multiple layers of felt and bitumen bonding to achieve maximum protection against water damage. Below is an outline of the typical installation process:

• Preparing the area, removing any old roofing material and ensuring the surface is clean and free of any debris.
• Applying a base layer: A layer of perforated felt is laid, allowing trapped moisture to escape.
• Apply Intermediate Layers: Multiple layers of bitumen-coated felt are laid, bonded with hot bitumen or cold adhesive.
• Apply a Top Layer: A cap sheet (felt with a mineral surface) to protect against UV and weathering.
• Optional Finish: A layer of gravel, chippings, or reflective paint may be added for extra protection.

The Benefits of Built-Up Felt Roofing

There are many advantages and benefits of Built-Up Felt Roofing:

Cost-effective

This roofing method is more budget-friendly than other flat roof options, such as GRP/fibre-glass.

Quick Installation 

Built-up felt roofing is generally straightforward and quick to install. A small garage roof surface can be installed over 1-2 days, with larger roofers often finishing the same week.

Easy to Repair

Patch repairs can be carried out to fix torn, cracked or blistered sections of a built-up felt roof without needing to disturb the entire surface. 

Proven Track Record

This is a roofing method that has endured for decades, increasing customer confidence. 

How Much Does Built-Up Felt Roofing Cost?

The cost of built-up felt roofing is dependent on several factors. These include the size and complexity of the roof space and whether it is a new roof or a roof resurface. 

The cost can also vary depending on where you are located. You can typically expect to pay between £600-£1200 for a standard garage roof, with larger roof spaces being priced by square footage. 

Built-Up Felt Roofing: Final Thoughts

We hope this article will help you gauge whether a built-up felt roof is the right option for you. Remember, the team at LMC Roofing & Building LTD are roofing experts, who provide build-up felt roofing across Birmingham and beyond. Get in touch with our experts to find out more about our roofing services.