Flat Roofing

Flat Roofing in your area

Flat roofs are common on Norwich extensions, bay windows, garages, and commercial outbuildings, and they have a poor reputation that's largely earned by outdated felt systems rather than the materials available today. EPDM rubber and GRP fibreglass flat roofs, installed correctly, will last 25 to 50 years with very little maintenance — a significant step up from the 10 to 15 years you'd expect from three-layer mineral felt.

For new flat roof installations, we begin by assessing the existing deck or installing a new one, ensuring the falls are sufficient to drain water away effectively. Ponding water is the most common cause of premature flat roof failure, and it's almost always down to inadequate drainage design rather than the membrane itself. We install outlets, gutters, and drip edges as part of every job. EPDM is bonded in large sheets with minimal joins, making it well-suited to the varying temperatures of a Norfolk climate. GRP fibreglass is harder-wearing underfoot and works well for walkable surfaces such as roof terraces on Norwich townhouses.

Flat roof repairs are often straightforward if caught early. Blistering felt, split seams, or cracked GRP can frequently be resolved without a full strip — but only if the deck beneath is still sound. We'll check the substrate before recommending repair over replacement. A failing flat roof over a kitchen extension that's left too long will cause timber deck rot and ceiling damage that costs far more to put right.

We survey all flat roofs before providing a written quote. Installations typically take one to three days depending on size. All our flat roofs come with a minimum 20-year manufacturer warranty on the membrane and a 10-year workmanship guarantee from us.

Flat roof installation in Norwich typically costs between £70 and £120 per square metre for EPDM or GRP, depending on the system chosen, deck condition, and drainage requirements.