Felt roofing

felt roofing

Felt roofing (often called roofing felt or bitumen felt) is a traditional roofing material widely used in the UK—especially for flat roofs, sheds, garages, and extensions.

🏠 What felt roofing actually is

Felt roofing is made from a base layer (polyester or fibreglass) that’s coated in bitumen (asphalt) to make it waterproof and durable.

It’s usually installed in layers (often 2–3 layers) and finished with a mineral top surface to protect it from weather and sunlight.

👍 Pros of felt roofing

• Cheap – one of the most affordable roofing options available
• Easy to install – popular for DIY projects and small buildings
• Lightweight – good for sheds and simple structures
• Water-resistant – provides solid protection from rain
• Easy to repair – patches and fixes are straightforward and inexpensive

👎 Cons of felt roofing

• Shorter lifespan – typically around 10–20 years (sometimes up to ~30 with better systems)
• Weather damage – can crack, warp, or become brittle in heat/cold
• Less durable than modern materials – more prone to wear and leaks over time
• Repairs can look messy – patching may affect appearance

📍 Where it’s commonly used

• Garden sheds
• Garages
• Extensions
• Flat roofs on houses

It’s less common on main pitched roofs nowadays, where longer-lasting materials are preferred.

⚖️ Is it a good choice?

• ✅ Good if you want low cost + quick installation
• ✅ Fine for small or temporary structures
• ⚠️ Not ideal if you want long lifespan or minimal maintenance