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Flat Roofing in Lancing

Lancing flat roofing from a team that knows the area — North Road through to the estates — with clear pricing and a written guarantee.

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Flat Roofing in Lancing

Adur flood plain humidity means felt underlay decay and timber batten rot run significantly faster than in elevated or sheltered locations. The flat roofs on Lancing's extensions, garages and outbuildings require the right material specification for local conditions. We install GRP as our first choice in exposed positions.

Flat Roof Drainage in Lancing — Getting It Right

Low-lying coastal strip position means both sea exposure from the south and Adur flood plain humidity from the east. Some of the highest ambient moisture levels in West Sussex outside dedicated wetland areas. No elevation to deflect Channel weather — full south-westerly exposure at ground and roof level. Correct fall and drainage specification is critical in Lancing's rainfall pattern. We survey the existing structure, assess drainage routes, and specify falls that clear the roof surface within 24 hours of rainfall stopping.

Deck Inspection — What We Find Under the Old Roof

We always strip to the deck before installation. Common findings on Lancing properties: saturated OSB or plywood deck from years of felt failure; joist rot from sustained moisture; inadequate insulation. We document all findings before quoting for extra work — never proceed without your agreement.

Maintenance for Lancing Flat Roofs

A GRP flat roof in Lancing requires minimal maintenance — an annual inspection and clearing of any debris from outlets. EPDM requires lap joint inspection every 2-3 years in West Sussex conditions. We carry out free annual inspections for all flat roofing customers for the first 5 years after installation.

Flat Roofing Costs in Lancing

GRP fibreglass (per sqm installed)	£70 - £90
EPDM rubber (per sqm installed)	£55 - £75
Kitchen extension (20-25 sqm)	£1,400 - £2,250
Garage (20-30 sqm)	£1,400 - £2,700
Larger area (40-60 sqm)	£2,800 - £5,400

Call for a Free Quote: 01273 973 996

Customer Reviews

What Lancing Homeowners Say

★★★★★

“Old felt roof on the extension had been leaking for two years. GRP installed in a day and a half. Looks completely different and I have no doubt it will outlast everything else on the property.”

Ray F. · South Lancing

★★★★★

“Replaced the garage felt with GRP. Quick, tidy and they found some deck rot I wasn't aware of — fixed it and showed me before proceeding. Honest job.”

Diane M. · Boundstone Lane, Lancing

★★★★★

“Third flat roof replacement in 30 years on the same extension. Went with GRP this time on their advice. Should be the last time I ever need to do it.”

Keith S. · North Lancing

Honest advice

Do You Actually Need Flat Roofing?

Not every Lancing roof that looks tired needs work. Flat roofs fail differently from pitched roofs — the signs are ponding, splits and lifting laps rather than slipped tiles.

What to look for:

Pooling water that sits for days after rain (ponding)
Cracks, splits or blisters in felt, or lifting laps at the joints
A damp patch on the ceiling directly below a flat roof or extension
Green algae and a tired, chalky surface on older felt
Felt at or past 15–20 years — near the end of its life

When it is not the answer: If a GRP or EPDM roof is only 10 years old with a single split, a localised repair is usually right — replacement would be premature — see our guide.

Comparison diagram of warm deck and cold deck flat roof construction — Warm deck vs cold deck — where the insulation sits changes how a flat roof performs.

Local Knowledge

What Makes Lancing Different

The Housing Stock

1930s-50s bungalows on South Lancing beach strip, 1960s-70s estate housing in North Lancing, Adur flood plain position. Concrete interlocking tile on bungalow strip, aged 50-80 years. Flat garage and bungalow sections with felt at or past end of life on most properties..

Climate and Exposure

Low-lying coastal strip between the South Downs and sea. Combined sea exposure from south and Adur flood plain humidity from east..

The Key Issue in Lancing

Adur flood plain humidity means felt underlay and timber batten decay runs significantly faster than in elevated or sheltered locations. Flat sections on bungalows consistently fail sooner than equivalent inland properties..

Pricing note: GRP flat roofing is particularly cost-effective in Lancing — the high ambient moisture makes felt lifespan even shorter than elsewhere in the region..

How It Works

Our Flat Roofing Process in Lancing

Every job follows the same clear process — no surprises, no hidden costs, full communication throughout.

Free Flat Roof Survey

We inspect the existing membrane, check drainage falls, assess the deck condition and identify any structural issues before quoting.

Strip to Deck

All existing felt or membrane stripped. Deck inspected thoroughly — any rot or saturation documented and quoted for before work proceeds.

Deck Preparation

Deck repaired or replaced where needed. Any drainage issues corrected. Falls assessed and improved where possible.

GRP or EPDM Installation

New membrane installed to manufacturer specification. GRP: full lamination across the entire deck as a single membrane. All upstands, outlets and penetrations correctly detailed.

Completion and Guarantee

10-year written workmanship guarantee issued. Free annual inspection for the first 5 years after installation.

Timescales

Typical Timescales in Lancing

Most Lancing flat roofing jobs fall into these bands:

Job	Typical duration
Localised felt repair	1–3 hours
Small extension / garage roof (GRP)	1–2 days
EPDM rubber recover	1–2 days
Warm-deck build-up (per roof)	2–4 days
Full strip & re-lay	2–4 days

In Lancing, gRP and warm-deck systems need dry, mild conditions to cure — we book them into settled windows and never lay resin onto a wet deck.

Access

Access, Scaffolding & Permits in Lancing

Access shapes every Lancing quote: most flat roofs are reached from a tower or ladder; scaffold is needed only where the roof is at height or edge protection is required. Scaffold is specified for first-floor or higher flat roofs, and anywhere an exposed edge needs protection — always itemised in your written quote, never a hidden extra, and we arrange it.

In Lancing, Lancing's inter-war and post-war coastal housing off North Road carries concrete tile with generally open, accessible plots. Pavement scaffold and skip permits go through Adur District Council; allow a few working days on streets like North Road, South Street, Penhill Road where space is tight.

Pricing

Flat Roofing Prices in Lancing

Typical flat roofing costs in Lancing (your written quote is fixed after survey):

Job	Typical range	Notes
Localised felt repair	£150–£350	Per visit
Garage / small extension (GRP)	£800–£2,000	Fibreglass, one-piece
EPDM rubber roof	£1,200–£3,000	Single-ply, long life
Warm-deck build-up	£2,000–£4,500	Insulated, Building Regs
Full strip & re-lay (large)	£3,000–£6,000	Size dependent

What moves the price in Lancing

Roof area and the number of upstands and outlets
System chosen — felt, EPDM or GRP fibreglass
Whether insulation is added to meet a warm-deck spec
Condition of the deck once the old covering is off

Worked example: A new GRP garage roof on an inter-war semi off North Road typically runs around £1,400, including access and waste.

For Lancing homeowners: no deposit on small repairs. Staged payments on larger flat-roof projects, materials-on-site first.

Guarantee

What the 10-Year Guarantee Covers

Every Lancing job we complete is backed in writing: our workmanship is backed by a written 10-year guarantee, with manufacturer warranties on materials on top.

Covered: our workmanship for 10 years, in writing, and 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, which we document 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

Disruption, Mess & Weather

Usually a quiet one- to two-day job over an extension or garage — minimal mess, and we clear the old covering as we go. It is a routine sight on Lancing streets. You do not need to stay home for external work — we just need power and access agreed in advance.

Felt and EPDM can be laid in cooler weather; GRP needs mild, dry conditions to cure, so we plan resin work around the forecast. Locally, on the flat coastal plain, Lancing is fully exposed to south-westerly gales and salt air off the Channel.

FAQ

Flat Roofing Lancing — Frequently Asked Questions

GRP fibreglass is our recommendation for most Lancing properties. It forms a seamless, jointless membrane with no lap joints to fail, resists UV well, and has an expected life of 30-40 years. EPDM is suitable for sheltered positions. Traditional felt is not recommended for West Sussex conditions.

GRP fibreglass is £70-90 per sqm installed. A typical kitchen extension (20-25 sqm) costs £1,400-£2,250. A double garage (40 sqm) costs £2,800-£3,600. All prices include stripping the old felt and debris disposal.

GRP fibreglass correctly installed lasts 30-40 years in West Sussex conditions. EPDM lasts 20-30 years. Traditional felt lasts 8-12 years. The significant lifespan difference justifies the higher upfront cost of GRP for most customers.

Replacing a flat roof with the same material and specification is permitted development. Changing the roof type (e.g. adding a raised parapet or changing the drainage system significantly) may require planning approval. We advise on this during the free survey.

Yes — this is the most common flat roofing job we carry out. We strip all existing felt, inspect and repair the deck if needed, and install a GRP system directly over the existing structure in most cases.

10-year written workmanship guarantee on all GRP and EPDM installations. The GRP material itself carries a manufacturer guarantee of 25 years.

We cover Lancing and the surrounding area including Shoreham, Worthing, Hove. Call 01273 973 996 to arrange a free survey.

Flat Roofing in Lancing