⭐ 4.9/5 · 127 Google Reviews · BN43

Flat Roofing in Shoreham-by-Sea

GRP, EPDM and felt flat roofing across Shoreham-by-Sea and the BN43 area — free quotes, no call-out fee, 10-year guarantee.

Tell us the job in 30 seconds. No pushy sales, no call-out fee.

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20+

Years Local

127

5★ Reviews

24/7

Emergency

10yr

Guarantee

How much does flat roofing cost in Shoreham-by-Sea? A GRP fibreglass flat roof on a typical extension costs £900–£2,500 with a 25-year guarantee; larger flat roofs run £2,000–£6,000. Free survey — call 0140 358 1272.

Local Knowledge

Flat Roofing in Shoreham-by-Sea

In Shoreham-by-Sea, the most common Shoreham roofing calls reflect the coastal setting: corroded and failed leadwork, wind-lifted and lost tiles on exposed seafront elevations, and accelerated deterioration of flat roofs under salt and UV. Storm damage after Channel gales is a regular call-out. We specify coastal-grade lead, stainless or galvanised fixings and patination oil as standard on Shoreham work.

Being right on the coast, Shoreham takes the full force of Channel weather. Salt air corrodes metal fixings and lead far faster than inland, so all leadwork here needs coastal specification and patination treatment. Onshore winds drive rain hard against exposed elevations and lift poorly fixed tiles and ridges, making mechanical fixing important. The estuary setting also means some low-lying properties face wind-driven rain from multiple directions.

Our Process

How We Handle Flat Roofing in Shoreham-by-Sea

Every flat roofing job in Shoreham-by-Sea follows the same process: a free survey with no call-out fee, a written fixed-price quote, and work carried out with materials matched to the local Shoreham-by-Sea roof profiles — Shoreham High Street, East Street, Brunswick Road, Beach Road and the Upper Shoreham Road and the surrounding BN43 area are within our regular patch. All work carries a written 10-year guarantee.

What We Do

Flat Roofing Standards in Shoreham-by-Sea

For Shoreham-by-Sea flat roofs we recommend GRP fibreglass as standard — a seamless, jointless system with a 25-year guarantee — and use EPDM on larger or more complex roofs. We strip the old covering and inspect every deck board before laying the new membrane, correcting falls with tapered firrings so water drains cleanly rather than ponding. Outlets and wall upstands are formed as a single seamless piece, which is where jointed felt systems most often fail.

All our work follows recognised standards — BS 5534 for slating and tiling, Code 5 lead minimum for valleys and flashings, and lime mortar (NHL 3.5) on pre-1930 masonry. We are NFRC registered with £5 million public liability insurance and give a written 10-year workmanship guarantee on every job.

BS 5534 sets the fixing, underlay and dry-fix requirements every compliant UK roof must meet. — BS 5534 (British Standards Institution)

Local Detail

Shoreham-by-Sea Roofs in Practice

Shoreham’s old town around the High Street and East Street carries Victorian and Edwardian terraces in slate and clay tile. The inter-war expansion brought 1930s semis in concrete and clay, and the seafront and Beach Road areas add a distinctive mix including Art Deco influences and later flat-roofed builds. Across all of it, the marine environment is the common factor: coverings, fixings and especially leadwork weather faster than they would inland.

Coverage & How We Work

Free Survey in Shoreham-by-Sea

Every job follows a free survey with no call-out fee. We attend survey requests in Shoreham-by-Sea within 3–5 working days and emergencies within 2–4 hours, and you receive a written, itemised, fixed-price quote before any work starts. NFRC registered, £5 million public liability insurance, written 10-year guarantee. We cover Shoreham-by-Sea and nearby Lancing, Southwick, Portslade, Steyning with no travel premium. Call 0140 358 1272.

Honest advice

Do You Actually Need Flat Roofing?

Flat roofs fail differently from pitched - and the symptoms usually show inside before the roof looks bad outside.

Ponding water still sitting 48 hours after rain
Blistering, cracking or crazing across the felt surface
Damp patch on the ceiling below - often away from the actual breach
Moss and silt build-up along the edges
The covering is 15-20+ years old and patch repairs are recurring

When it is not the answer: A sound deck with one split or a failed lap can be repaired for a fraction of replacement - and if the roof is under 10 years old, the original installer’s guarantee should be your first call, not us. Read the full guide.

Warm deck versus cold deck flat roof build-ups compared layer by layer — Warm deck vs cold deck — insulation above the deck is the current Building Regulations standard.

The process

How a Shoreham-by-Sea Flat Roofing Job Runs

1. Survey

We check the covering, the falls, the edge details and - critically - probe whether the deck beneath is sound or rotten.

2. Written itemised quote

Deck condition assumptions stated plainly; warm-deck insulation specified where the room below is habitable (a Building Regulations requirement).

3. Scheduling

GRP and EPDM need dry conditions to cure and bond - we book against the forecast honestly.

4. Strip & deck works

Old covering off, deck inspected, rot cut out and re-boarded, insulation laid on warm-deck builds.

5. New covering

GRP fibreglass laid wet with trims, or one-piece EPDM membrane - edge details and outlets done properly, because that is where flat roofs actually fail.

6. Sign-off

Falls checked with water where possible, guarantee handed over - 20 years on GRP systems we install.

See the full walkthrough of how we work →

Timescales

How Long Does It Take?

Job	Typical duration
Garage roof (single)	1-2 days
Kitchen extension	2-3 days
Larger wrap-around extension	3-5 days
Dormer top	1-2 days
Repair to split or lap	Half day

GRP will not cure below about 5°C or in rain - winter jobs wait for a dry window, and we would rather move a date than trap moisture under a new covering.

Access

Access, Scaffolding & Permits in Shoreham-by-Sea

Most domestic flat roofs run from towers and edge protection rather than full scaffold. Scaffold is specified for: first-floor or higher flat roofs, and any job with sustained edge work over a public path - always itemised in your written quote, never a hidden extra, and we arrange it.

Coastal terraces off the High Street and East Street are tight for scaffold and need Adur District Council footway licences; Shoreham Beach properties add salt-exposure checks to every metal fixing we touch. Pavement scaffold and skip permits go through Adur District Council; allow a few working days on streets like High Street, East Street where space is tight.

Pricing

Flat Roofing Prices in Shoreham-by-Sea

Job	Typical range	Notes
Garage roof in GRP	£1,400-£2,400	Deck condition dependent
Kitchen extension, GRP warm deck	£2,200-£4,200	Incl. insulation to Building Regs
Extension in EPDM	£1,800-£3,500	One-piece membrane
Dormer top	£900-£1,800	GRP or EPDM
Split/lap repair	£250-£550	Where deck is sound

What moves the price

Deck condition - rot cut-out and re-boarding is the wildcard
Warm-deck insulation where the room below is habitable
Edge details, outlets and upstands - the fiddly bits are the failure points
Access height

Worked example: A 1990s Broadbridge Heath integral garage roof: rotten chipboard deck replaced with OSB3, finished in GRP with new edge trims, £2,100 over two days.

No deposit on repairs; extensions and garages typically split start/completion. Nothing before materials arrive.

Covering BN43 and surrounding postcodes.

Guarantee

The Guarantee in Plain Terms

GRP systems carry a 20-year guarantee on ours; EPDM membranes carry long manufacturer warranties with our 10-year workmanship cover on the installation.

Covered: workmanship for 10 years, in writing, transferable if you sell.
On top: manufacturer warranties on materials (terms vary by product).
Not covered: storm or impact damage - that is an insurance matter, and we will document it for your claim.

If a fault appears in covered work, we come back and put it right. No quibbling, no re-charge.

Good to know

What It Is Like While We Work

A day or three of resin smell on GRP jobs - strong but temporary - and the deck strip is the noisy part. Gardens below get sheeted, and we need outside power. You do not need to stay home for external work - we just need power and access agreed in advance.

Curing chemistry rules the diary: we lay in dry weather only, and an unexpected shower means stopping and protecting rather than pressing on. Salt-laden coastal air corrodes nails and flashings years faster than inland - marine-grade fixings are not optional here.

Customer Reviews

What Horsham Customers Say

★★★★★

"Leadwork round our chimney had corroded in the salt air. They renewed it in coastal-grade lead with patination oil — explained exactly why it matters here."

Ian M. · Shoreham old town

★★★★★

"Lost tiles off the seafront elevation in a Channel gale. Fast make-safe, then a proper mechanically-fixed repair so it won’t happen again."

Karen T. · Beach Road, Shoreham

★★★★★

"New flat roof on our extension near the harbour. GRP, seamless, 25-year guarantee. Coped with the exposure no problem."

Neil R. · Shoreham (harbour area)

FAQ

Frequently Asked Questions

A GRP fibreglass flat roof on a typical extension costs £900–£2,500 with a 25-year guarantee; larger flat roofs run £2,000–£6,000.

Yes — we cover Shoreham-by-Sea and the BN43 area for flat roofing, with no travel premium and no call-out fee.

Yes — free written, itemised, fixed-price quotes before any work starts.

Yes — a written 10-year workmanship guarantee, NFRC registration and £5m public liability insurance on all Shoreham-by-Sea work.

All types — Shoreham’s old town around the High Street and East Street carries Victorian and Edwardian terraces in slate and clay tile. The inter-war expansion brought 1930s semis in concrete ...

Surveys within 3–5 working days, emergencies within 2–4 hours. Call 0140 358 1272.

Yes — we source and match reclaimed peg tile, Horsham Stone and slate and work in lime mortar on period and conservation properties in Shoreham-by-Sea.

Like-for-like repair is generally permitted development. Changing material, or any work in a conservation area or on a listed building, may need consent — common in Shoreham-by-Sea. We confirm this during the survey.

Yes — we protect the site, clear all waste and debris on completion, and arrange skip and scaffold licences where needed.

Flat Roofing in Shoreham-by-Sea

Flat Roofing in Shoreham-by-Sea

How We Handle Flat Roofing in Shoreham-by-Sea

Free Flat Roofing Survey in Shoreham-by-Sea

Flat Roofing Standards in Shoreham-by-Sea

Shoreham-by-Sea Roofs in Practice

Flat Roofing in Shoreham-by-Sea? Free survey — call now.

Free Survey in Shoreham-by-Sea

Do You Actually Need Flat Roofing?

How a Shoreham-by-Sea Flat Roofing Job Runs

1. Survey

2. Written itemised quote

3. Scheduling

4. Strip & deck works

5. New covering

6. Sign-off

How Long Does It Take?

Access, Scaffolding & Permits in Shoreham-by-Sea

Flat Roofing Prices in Shoreham-by-Sea

What moves the price

The Guarantee in Plain Terms

What It Is Like While We Work

What Horsham Customers Say

Frequently Asked Questions

Other Roofing Services in Shoreham-by-Sea

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