Roofing Felt | Roofing Sheets

Welcome to the Roofing Felt category on Build4Less, where you will find a comprehensive range of roofing felt products suited for various applications and projects. Roofing felt is an essential material in the construction and repair of roofs, providing an extra layer of protection against the elements. Here, we explore the different types of roofing felt available, their practical uses, and guidance on selecting the appropriate type for your needs.

What is Roofing Felt?

Roofing felt is a flexible, waterproof material used beneath roofing materials or as a standalone layer to protect roofs from water ingress, wind damage, and UV rays. It is typically made from bitumen-saturated base materials like polyester or fibreglass and can be torch-on, self-adhesive, or nail-on. Roofing felt is especially popular for flat roofs, sheds, garages, and extensions.

Types of Roofing Felt

Torch-On Roof Felt

Our collection includes various Torch-On felts like the Danosa and FIX-R SBS Underlays and Cap Sheets. These are typically used in flat roofing and require a torch to melt the bitumen, allowing it to bond securely to the roof surface. Polyester-reinforced Torch-On felts are popular for their durability and effective waterproofing qualities.

Cap Sheets and Underlays

Cap Sheets, such as the FIX-R Classic and IKO Britorch Non-Woven varieties, provide the top layer of protection, offering additional UV resistance and waterproofing. Underlays, including the universal types from FIX-R and IKO, are used beneath the cap sheet to provide an extra layer of waterproofing and insulation.

Speciality Roofing Felts

We also offer specialised products like the IKO Adesso and Polyester Torch-On Cap Sheets, designed for specific applications such as higher durability or adaptability to various roof types. These products are perfect for when a custom or enhanced solution is required.

Benefits of Roofing Felt

• Waterproof Protection – Creates a durable barrier against rain, snow, and moisture
• Cost-Effective – Offers a budget-friendly roofing solution without compromising durability
• Thermal Stability – Modified bitumen options (like SBS) resist cracking in cold and softening in heat
• Versatility – Suitable for both new builds and refurbishments across various roof types
• Ease of Installation – Torch-on and self-adhesive variants allow quick, secure application. It is easy to install.
• UV & Weather Resistance – Mineral finish felts protect against sunlight and wear.

Applications of Roofing Felt

• Flat Roofing Systems – Commonly used in three-layer systems with underlay and cap sheet
• Shed & Outbuilding Roofs – Simple, quick fix to keep rain out of smaller buildings
• Garage Roofs – Ideal for protecting low-slope garage roofs from the elements
• Extensions & Porches – Affordable waterproofing for home additions
• Temporary Roof Covering – Offers emergency protection during repair work

Choosing the Right Roof Shed Felt

When selecting roofing felt, consider the following:

• Roof Type: Ensure the product is suitable for the specific type and shape of your roof.
• Durability Needs: Look for higher-grade materials if the roof will be exposed to harsh weather conditions.
• Installation Method: Choose between torch-on, self-adhesive, or other types based on your installation preference and skill level.

Why Shop Roofing Felt at Build4Less?

• Competitive pricing: Real savings on quality brands of roof felt products.
• Extensive selection: Choose from SBS, polyester, non-woven, mineral, and self-adhesive felt.

To ensure a durable and weatherproof roofing system, it’s essential to pair your roofing felt with complementary building materials:

• Strengthen your roofing structure with reliable roofing sheets
• Enhance waterproofing and finishing with durable roofing accessories and fixings

Frequently Asked Questions (FAQs)

What is roofing felt used for?

Roofing felt is a protective underlay installed beneath tiles, shingles, or other roof coverings. It acts as a secondary barrier against water ingress, helping to protect the roof structure from moisture and weather damage.

Is roofing felt waterproof?

Yes, roofing felt is designed to be water-resistant and helps prevent rain and moisture from penetrating the roof. It works as a backup layer, ensuring your building stays protected even if external roofing materials are damaged.

What types of roofing felt are available?

There are several types of roofing felt to suit different applications:

• Torch-on felt – ideal for flat roofs and professional installations
• Self-adhesive felt – easy to install and suitable for DIY projects
• Shed felt – lightweight and perfect for garden buildings

Each type offers varying levels of durability and installation methods.

How long does roofing felt last?

The lifespan of roofing felt typically ranges from 10 to 25 years, depending on the quality of the material and installation. Higher-grade or modern systems can last even longer with proper maintenance.

Can roofing felt be used on all roof types?

Roofing felt is most commonly used on:

• Flat roofs
• Garden sheds and outbuildings
• Garages and extensions

It can also be used as an underlay beneath tiles or slates in pitched roofs for additional protection.

What is the difference between roofing felt and a breather membrane?

Roofing felt provides a waterproof barrier, while a breather membrane allows moisture vapour to escape while still preventing water ingress. Breather membranes are typically used in modern roofing systems to improve ventilation and reduce condensation.

Is roofing felt suitable for DIY installation?

Yes, many types, such as self-adhesive and shed felt are suitable for DIY installation. However, torch-on felt should be installed by professionals due to the use of heat and specialised equipment.