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Flat Roofing Solutions

Flat roofs require specialized waterproofing techniques to prevent pooling and leaks. Capital Roofing installs high-performance EPDM rubber and GRP fibreglass flat roofing systems designed for extensions, garages, and commercial buildings across London.

When You Need Flat Roofs

Pooling water that remains on your flat roof surface long after rainfall stops. Cracks, blisters, or splits appearing in old felt roofing membranes. Water stains appearing on interior ceilings directly beneath flat roof extensions or balconies. Flaking or lifting edges around the perimeter trims and flashings.

How We Do It

We inspect the underlying deck and replace any water-damaged timber boarding. We lay high-density insulation boards to improve thermal efficiency where required. We install your chosen seamless EPDM rubber or GRP fibreglass membrane with precision detailing. We secure all perimeter trims and check drainage outlets to ensure flawless water runoff.

What to Expect

Most standard flat roof replacements are completed within 1 to 3 days.

Flat Roofing Solutions FAQs

Both systems offer exceptional durability. EPDM is highly flexible and ideal for residential extensions, while GRP fibreglass forms a rigid, seamless finish that can withstand foot traffic. We help you choose the best option for your specific project.
Properly installed EPDM and GRP flat roofs easily last for 30 to 50 years with minimal maintenance.
If the damage is localized, we can often perform targeted patch repairs. However, if the decking has rotted or the membrane is failing entirely, a full replacement is more cost-effective long-term.
Yes, all our flat roof installations are fully guaranteed against material and workmanship defects.