Flat Roofing in City Of Westminster, Westminster

Most homeowners we speak to in Westminster tell us the same thing: they’re tired of patch-up jobs that only last a season. Traditional flat roofs often suffer from 'ponding'—that's when water sits for more than 48 hours because the drainage isn't quite right. Over time, this weight and moisture cause old bitumen felt to crack and blister. If you’ve spotted 'alligatoring' on your roof surface or cracks around the upstands where the roof meets the wall, it’s a sign the material has reached its limit. We don't just slap a new layer on top; we look at the substrate and the drainage to ensure your new roof actually sheds water like it should.

If you’re looking for a roof that’s virtually indestructible, GRP (Glass Reinforced Plastic) is often the way to go. It’s a cold-applied system, which means there are no messy blowtorches involved—something many of our Westminster clients prefer for safety. Once it’s cured, it forms a completely seamless, waterproof skin over your roof. Because there are no joints or seams, there are no weak points for water to get in. It’s also incredibly tough, making it the perfect choice if you want to use your flat roof as a balcony or terrace. Imagine having a rooftop space that looks great and stays bone-dry for decades.

For larger flat roofs or extensions, EPDM rubber roofing is a fantastic option that’s gained massive popularity across Surrey and London. Why? Because it’s incredibly flexible. It doesn't mind the odd heatwave or a freezing winter night—it just expands and contracts without cracking. We often install this as a single-ply membrane, often in one big sheet, which reduces the chance of leaks to almost zero. It’s also eco-friendly and has a life expectancy of over 50 years. If you want a 'fit and forget' solution that offers incredible value for money, EPDM is a very smart investment.

Forget the thin, leaky felt roofs of the 1970s. Modern torch-on felt is a completely different beast. We use high-performance elastomeric membranes that are reinforced with polyester, making them thick, durable, and resistant to UV damage. This is a brilliant, cost-effective choice for garages, sheds, or smaller home extensions. When we install a felt roof, we pay extra attention to the details—the drip edges, the kerbs, and the lead flashing—to make sure the finish is as tidy as it is functional. It’s a classic method updated for modern standards.