When it comes to keeping your commercial or residential property watertight, few roofing systems match the reliability and value of a built up felt roof. At Denco Liquid Waterproofing, we’ve been installing, repairing, and maintaining felt roofs across London for decades, and there’s a reason this traditional method continues to stand the test of time.
What Is a Built Up Felt Roof?
A built up felt roof, often called a BUR, is made by layering multiple sheets of roofing felt bonded together with hot bitumen or a similar adhesive. Once applied, these layers create a durable, waterproof surface that protects buildings from London’s ever changing weather.
The result?
- Excellent waterproofing
- Long lifespan when maintained properly
- Cost effective installation compared to modern alternatives
- Suitable for flat and low slope roofs
This system remains a proven favorite for schools, offices, warehouses, and residential extensions throughout Greater London.
Why London Property Owners Choose Built Up Felt Roofs
London’s climate is famously unpredictable with heavy rain one day and bright sunshine the next. Built up felt roofing offers the flexibility and weather resistance needed to handle those conditions with ease.
At Denco Liquid Waterproofing, our experienced roofing team understands local architecture and building regulations, ensuring your roof is not only weatherproof but also compliant and visually consistent with the surrounding area.
Other key benefits include:
- Low maintenance with periodic inspections and simple upkeep
- Thermal efficiency thanks to the layered design that helps insulate your property
- Quick repairs since damaged areas can often be patched instead of fully replaced
Our Expertise in Felt Roofing Across London
As one of London’s long established roofing specialists, Denco Liquid Waterproofing provides a full range of felt roofing services including
- New installations for commercial and residential properties
- Flat roof repairs and leak detection
- Replacements and upgrades for old or damaged systems
- Protective coatings to extend lifespan and improve energy efficiency
We use high quality materials from trusted suppliers, and our skilled roofers are trained to the latest industry standards. Whether your property is in Central London, North London, or the outer boroughs, we bring the same level of care and precision to every job.

Why Work With Denco Liquid Waterproofing
- Over 30 years of roofing experience in London
- Fully insured and accredited professionals
- Transparent quotes with no hidden costs
- Excellent record with both domestic and commercial clients
We believe that good roofing isn’t just about materials. It’s about craftsmanship, reliability, and trust. Our team takes pride in every project, big or small.
Book Your Built Up Felt Roof Consultation
If you’re considering a built up felt roof in London, or your existing flat roof needs attention, the experts at Denco Liquid Waterproofing are here to help.
Contact us today to schedule a free site visit and receive a no obligation quote. Let’s make sure your roof is built to last, just like our reputation.
