Flat Roofing Including Felt and GRP Systems
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Flat Roofing
We provide expert flat roofing solutions using high-quality Felt and GRP (Glass Reinforced Plastic) systems, ideal for extensions, garages, and modern builds. Our flat roofs are designed for durability, weather resistance, and low maintenance. Whether you need a new installation or a replacement, our team ensures a clean finish and long-lasting protection for your property.
Reason For Choosing Us
Smart Roofing London
⦿ A trusted family business built on values and reliability.
⦿ 15-year guarantee with official certification for your peace of mind.
⦿ Committed to sustainability & eco-friendly solutions for a better future.
Quality Material
Premium materials for strong, lasting roofs—quality first, always.
Fully Insured
Professional roofing with full safety and assurance — your trust, our priority.
Guarantee
Quality Guaranteed. Durable roofs, expert repairs—no extra cost if issues arise.
Our Services
Process
Felt, or modified bitumen, roofing typically uses a three-layer system, often applied with a torch for a waterproof seal.
- Surface Preparation: The existing surface must be cleaned, dry, and free of debris.
- Venting Base Sheet: A layer of venting base sheet is applied to prevent moisture buildup.
- Reinforced Felt Underlay: A reinforced felt layer is added for extra protection.
- Mineral Cap Sheet: A final layer, often a mineral cap sheet, provides UV and physical damage resistance.
- Application: The felt is often adhered by torch-on application, using heat to melt the bitumen and bond it to the roof.
- OSB Deck Installation:OSB (Oriented Strand Board) boards are installed to create a flat, suitable roof deck.
- Edge Trims:GRP edge trims are installed to create a border around the roof area.
- Resin Application:A mixture of resin and a catalyst is applied to the roof surface and the bandage on the trims.
- Fibreglass Laminating:Fibreglass matting is then cut and laid over the resin, which is “wet out” using a roller to saturate the glass strands.
- Topcoat:A protective topcoat is applied once the laminate is no longer sticky, typically within 24 hours.
- Professional Installation:Both felt and GRP roofing require specialized skills, so it is best to hire experienced professionals to ensure correct installation and maximize the lifespan of the roof.
- Weather Conditions:GRP roofing must be installed in dry weather, with an ambient temperature between 7°C and 30°C, for proper curing.
- Safety:Torch-on felt roofing involves open flame and requires strict adherence to safety protocols.