Flat Roofing — King's Lynn, Norfolk, Cambridgeshire & Suffolk
Flat roofing done properly.
Sealed for decades.
FH Roofing installs EPDM rubber, GRP fibreglass and high-performance felt flat roofs across King's Lynn and East Anglia. Extensions, garages, dormers, porches and full conservatory warm-roof conversions — engineered with correct falls, insulation and detailing so water goes where it should.
EPDM rubber flat roofs
A single-piece EPDM membrane means no seams, no laps and nothing to split in a Norfolk winter. It stays flexible through frost and heat, shrugs off UV and carries a life expectancy measured in decades rather than years.
- Seamless single-sheet membranes
- 30–50 year life expectancy
- Ideal for extensions and garages
- Fully bonded, walkable finish
GRP fibreglass roofing
GRP gives a hard-wearing, seamless resin finish that suits balconies, dormers and roofs that see foot traffic. Laid over a fresh deck with fibreglass trims, it looks sharp and stays watertight.
- Tough, walk-on surface
- Colour-matched topcoat
- Integrated GRP edge trims
- Perfect for balconies and dormers
Warm roof conversions
Cold, leaking conservatory and extension roofs become properly insulated warm decks — quieter, warmer in winter, cooler in summer, and finally usable all year round. We handle the joists, deck, insulation, membrane and internal finish.
- Structural joist and deck renewal
- Insulated warm-deck build-up
- Lantern and skylight installation
- Building-regs compliant detailing
Repairs and emergency call-outs
Ponding water, blisters, split felt or a failed upstand — we diagnose the real cause rather than patching over it, and we can make a leaking flat roof safe fast when the weather turns.
Areas we cover
Common questions
How long does an EPDM flat roof last?
A correctly installed EPDM rubber flat roof typically lasts 30 to 50 years. We install single-piece membranes wherever possible, so there are no seams to fail.
How much does a flat roof cost in King's Lynn?
Cost depends on size, deck condition and insulation. A small garage roof is far less than a full warm-roof conservatory conversion. Every FH Roofing quote is free, itemised and fixed before work starts.
Can you replace a leaking felt roof?
Yes. We strip the old felt, inspect and replace any rotten decking or joists, then install a new EPDM, GRP or high-performance felt system with proper falls and drainage.
Do you convert conservatory roofs to warm flat roofs?
We do — it is one of our most requested jobs. A warm deck roof makes the room usable all year, and our Work page shows the full before, during and after photography.