Larke's Roofs — East Anglia roofing experts
King's Lynn & West Norfolk Borough Council · PE31

Flat roof replacement across Dersingham

We are based at Costessey near Norwich and reach Dersingham via the A149, about 9 miles from King's Lynn. That matters for flat roofing & epdm: it decides how quickly we can inspect, how we get materials on site, and how we sequence work on carrstone and brick cottages and estate housing. Jobs here are often within sight of the Sandringham Estate, so we allow for the narrow approaches and parking that comes with it.

County
Norfolk
Postcode
PE31
Access
A149
From King's Lynn
~9 miles
work in progress: commercial roof works on a unit at Sandringham estate buildings, Dersingham off the A149 — flat roofing & epdm by Larke's Roofs
site photograph of re-tiled pitched roof on a carrstone and brick cottage in Dersingham (PE31) off the A149 — flat roofing & epdm by Larke's Roofs

Specification and scope in Dersingham

EPDM rubber, GRP fibreglass and felt flat roofs for extensions, garages, dormers and outbuildings, with proper falls, trims and outlets.

  • EPDM rubber roofs
  • GRP fibreglass roofs
  • Torch-on felt systems
  • Extensions, garages and dormers
Full flat roofing & epdm details

How a Dersingham job runs

  1. Deck inspection

    We lift a section to see the deck; nothing is laid over boards that are soft or damp.

  2. Falls and detailing set out

    Firrings, outlet positions and upstand heights are agreed before the membrane arrives.

  3. Membrane installation

    EPDM, GRP or felt installed with trims and upstands dressed properly at every edge.

  4. Water test and handover

    Outlets checked under flow, edges walked, and the finished roof handed over with the system details.

Where else we work from Dersingham

The PE31 postcode district plus King's Lynn, Hunstanton, Heacham and Swaffham are all inside our normal Norfolk working area. Flat Roofing & EPDM enquiries here are handled the same way. Postcodes covered locally: PE31.

Frequently working in and around Sandringham estate buildings, village trade units.

Materials and systems we use

Torch-on felt systems
Multi-layer bitumen for larger or awkward flats where a robust, easily repairable finish is the practical choice.
Warm-deck insulation build-ups
Insulation above the deck keeps the structure warm and reduces condensation risk compared with old cold-deck details.
Falls and firrings
Firring pieces set the fall so water leaves the roof rather than sitting on it.
EPDM rubber membrane
One-piece rubber for extensions, dormers and garages — no field seams, and it copes well with movement.

Questions we get asked in Dersingham

Why does water sit on our flat roof after rain?
Insufficient fall, a sagging deck or a blocked outlet. On Dersingham extensions it's usually falls that were never set properly. We reset falls with firrings rather than lay new membrane over the same puddle.
Do you insulate at the same time?
We can build a warm deck with insulation above the structure, which usually makes sense if the roof is coming off anyway and the room below is cold or prone to condensation.
Can you overlay the existing felt?
Only if the deck below is dry and sound, and we'll lift a section to check. Overlaying a soft deck buys a year or two and costs the whole job again.
What does a flat roofing & epdm quote in Dersingham cost?
The inspection and the written quotation are free. The job price depends on the covering, the roof size, access and what we find under it — which is exactly why we won't price it over the phone.
Do you clear up afterwards?
Yes. Scaffold is struck, waste removed and gutters cleared before we invoice.

Covering Dersingham and King's Lynn

About 9 miles apart — both are normal working areas for us. Free inspection either way.

Serving Dersingham and nearby areas

Standards, insurance and guarantees

  • Written specifications

    Every quote states the materials and detailing, so you can see exactly what's included.

  • Detailing shown before install

    Upstands, trims and outlet positions agreed with you before anything is bonded down.

  • Fully insured

    We carry insurance for the work we take on, and can confirm cover before we start.

Where to go from here

We will lift a section of the existing roof before pricing. Laying new EPDM or fibreglass over a wet deck is the cheap answer that costs twice. It is roughly 9 miles each way from King's Lynn, so there is no travel surcharge for coming out to Dersingham.

Covering Dersingham and King's Lynn

About 9 miles apart — both are normal working areas for us. Free inspection either way.

Serving Dersingham and nearby areas