GRP fibreglass and EPDM rubber flat roofs for extensions and garages. 25-year systems. Covering all PO14 postcodes including Fareham, Portchester, Stubbington.
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Flat Roofing Fareham
Flat Roofing in Fareham, Hampshire
Fareham town centre has a substantial Victorian and Edwardian core around West Street and High Street, with terraced housing in the streets behind the town. The majority of the borough is 1960s to 1980s suburban development — large estates at Catisfield, Stubbington and Park Gate with predominantly concrete interlocking tile roofs now 40 to 60 years old. Portchester has older stock again including properties near the Castle.
Our flat roofing service covers all of PO14 — free surveys, honest assessments and no call-out fees. Call 0238 184 9628 for same-week availability across Fareham.
The flat-roofed extensions and garages in Fareham span a wide age range. The oldest — on Victorian and 1930s properties — have felt systems that in some cases date from mid-20th century extensions. The most common stock is 1970s to 1990s felt, now 30 to 50 years old and well beyond its design life. In Fareham's Portsmouth Harbour exposure — salt air affects properties within 2 to 3 miles of the waterfront, felt deteriorates faster than in drier inland areas — the moisture cycling accelerates blistering and cracking of the bitumen.
GRP for Fareham Extensions
GRP fibreglass is our primary recommendation for most Fareham residential flat roofs. The seamless installation has no joints for water to find, performs well in Hampshire's persistent wet conditions, and requires zero maintenance for 25-plus years. For standard kitchen and dining extensions across Fareham's estate housing, GRP is the most practical and cost-effective system available.
Deck Inspection in Fareham
On most Fareham flat roofs we survey, the deck boards show at least some deterioration — particularly at the perimeter where the flat roof meets the wall junction, and at any ponding areas where water has repeatedly stood. We inspect the deck during survey and include all necessary board replacement in the quote before work begins. This is the most common source of unexpected costs on flat roof jobs — we eliminate it by checking before we price.
Customer Reviews
What Fareham Homeowners Say
★★★★★
"Rear extension felt roof had been leaking every winter. GRP system installed in one day. Completely different — not a drop since. Should have done it years ago."
Diane R. · Fareham
★★★★★
"They found two rotten deck boards during the survey — included them in the quote and replaced before laying GRP. No extras on the invoice. Honest work."
Andrew K. · Fareham, Hampshire
★★★★★
"Garage flat roof — original 1970s felt, completely saturated. GRP replacement, half a day. Clean finish and the guarantee gives real peace of mind."
Carol T. · Catisfield estate area, Fareham
Flat Roofing Conditions in Fareham
The flat-roofed extensions and garages in Fareham span a range of ages and conditions. In Portsmouth Harbour exposure — salt air affects properties within 2 to 3 miles of the waterfront, felt systems deteriorate faster than in drier inland areas — moisture cycling accelerates blistering and membrane cracking. Most felt flat roofs in Fareham that have not been replaced in the last 15 years are now past the point where patching is economical. GRP or EPDM replacement eliminates ongoing maintenance costs in a single installation.
GRP vs EPDM for Fareham Properties
GRP fibreglass is our primary recommendation for most Fareham residential flat roofs under 30 square metres — seamless, no maintenance, manufacturer-backed guarantee for 25-plus years. For larger flat roof areas over 30 square metres, EPDM single-ply rubber membrane is our preferred system — it handles thermal movement across large areas better than GRP and costs slightly less. Both systems perform equally well in Portsmouth Harbour exposure — salt air affects properties within 2 to 3 miles of the waterfront.
Deck Inspection in Fareham
On most Fareham flat roofs we survey, the deck boards show some deterioration — particularly at perimeter edges and any areas where water has repeatedly ponded. We inspect the deck during every survey and include all necessary board replacement in the quote before work begins. Discovering rotten deck boards after installation has started is the most common source of unexpected costs on flat roof jobs — our pre-start survey eliminates that uncertainty.
Flat Roofing in Fareham — What We Find
The flat-roofed extensions and garages in Fareham span a wide age range. The oldest — on Victorian and 1930s properties — have felt systems that in some cases date from mid-20th century extensions. The most common stock is 1970s to 1990s felt, now 30 to 50 years old and well beyond its design life. In Fareham's Portsmouth Harbour exposure — salt air affects properties within 2 to 3 miles of the waterfront, felt deteriorates faster than in drier inland areas — the moisture cycling accelerates blistering and cracking of the bitumen.
GRP for Fareham Extensions
GRP fibreglass is our primary recommendation for most Fareham residential flat roofs. The seamless installation has no joints for water to find, performs well in Hampshire's persistent wet conditions, and requires zero maintenance for 25-plus years. For standard kitchen and dining extensions across Fareham's estate housing, GRP is the most practical and cost-effective system available.
Deck Inspection in Fareham
On most Fareham flat roofs we survey, the deck boards show at least some deterioration — particularly at the perimeter where the flat roof meets the wall junction, and at any ponding areas where water has repeatedly stood. We inspect the deck during survey and include all necessary board replacement in the quote before work begins. This is the most common source of unexpected costs on flat roof jobs — we eliminate it by checking before we price.
Honest advice
Do You Actually Need Flat Roofing in Fareham?
A flat roof in Fareham announces its age through ponding, blisters and the first leak below. Knowing the stage it is at decides repair versus re-cover.
Sagging or soft spots underfoot indicating a failing deck
A persistent leak into the room or garage below
Felt that is over 10–15 years old on an extension
Blistering, cracking or splitting in an old felt covering
Lifted or open seams where two felt sheets meet
When it is not the answer: If the covering is sound and only a seam or upstand has failed, a targeted repair beats a full re-cover — we will tell you honestly which you need Read the full guide.
Warm-deck construction puts insulation above the deck, removing the condensation risk that plagues cold-deck extensions.The process
How a Fareham Flat Roofing Job Runs
Free survey
We inspect the roof and the void from inside the loft, identify the fault and its cause, and check what is developing next on your Fareham property.
Written itemised quote
You get a clear written quote with any access or scaffold costs shown separately — no call-out fee, no obligation, no vague lump sum.
Scheduling
We book a convenient time, with same-day attendance for genuine emergencies across Fareham.
The work
We take up the tired covering, sort the deck and the fall, then lay a new GRP or EPDM system with the upstands and trims detailed correctly.
Cleanup & sign-off
We clear all debris, show you the finished work, and hand over the workmanship guarantee.
Timescales
Job Durations at a Glance
Job
Typical duration
Small garage or porch roof — GRP
Half to 1 day
Single-storey extension — GRP or EPDM
1–2 days
Large extension + new insulation
2–3 days
Flat roof + integrated skylight
2–3 days
Wet or high-wind days pause work at height safely — we build weather margin into every Fareham booking.
Access
Getting Safely onto Fareham Roofs
Most single-storey flat roofs are reached from towers or a modest scaffold; larger or higher roofs are quoted with full scaffold, always itemised. Scaffold is specified for: first-floor and higher flat roofs, and any roof where edge protection is needed for safe working - always itemised in your written quote, never a hidden extra, and we arrange it.
Fareham’s older centre and creekside streets have tight access; scaffold permits run through Fareham Borough Council. Pavement scaffold and skip permits go through Fareham Borough Council; allow a few working days on streets like West Street, High Street, the older lanes off the quay where space is tight.
Pricing
Flat Roofing Prices in Fareham
Job
Typical range
Notes
Garage / porch roof — GRP
£800–£1,600
Small area
Single-storey extension — EPDM
£1,500–£3,000
Typical rear extension
Single-storey extension — GRP
£1,800–£3,500
Typical rear extension
Large extension + insulation
£3,500–£6,000
Warm-deck build-up
Flat roof + integrated skylight
£2,500–£5,000
Incl. rooflight
What moves the price
Covering system — GRP or EPDM
Roof area and any deck repairs needed
Whether the fall must be corrected
Insulation to meet warm-deck standard
Skylights or access hatches added
Worked example: an EPDM re-cover on a rear extension on a 1930s semi at a 1930s semi off Highlands Road in Fareham: around £2,100 including access.
No large deposit; a materials stage then balance on completion. Written itemised quote with the system warranty stated. VAT included where applicable.
Covering PO14, PO15, PO16 and surrounding postcodes.
Guarantee
The Guarantee in Plain Terms
The new flat roof carries a 10-year workmanship guarantee; GRP and EPDM systems carry manufacturer material warranties of 20 years or more on top.
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.
The workmanship is guaranteed for 10 years in writing across Fareham, with manufacturer material warranties on top of that.
“BS 6229, the code of practice for flat roofs, requires that surface water drains freely with no ponding after prolonged dry weather — the single most important factor in flat-roof longevity.”— British Standard BS 6229
Good to know
Disruption, Mess & Weather
Flat-roof work is quieter than a re-roof — some stripping noise and old-felt waste in a skip — and rarely disrupts the rooms below. You do not need to stay home for external work - we just need power and access agreed in advance.
EPDM lays year-round; GRP needs a dry, mild window to cure, which we schedule around Southampton’s weather. Fareham sits at the head of its own creek off Portsmouth Harbour, with salt exposure similar to the Solent shore.
FAQ
Frequently Asked Questions
Yes. We cover Fareham and all PO14 postcodes for flat roofing. Free no-obligation quotes on all work. Call 0238 184 9628.
Costs vary by property size and scope. We provide free no-obligation quotes across Fareham — call 0238 184 9628 or request a quote online.
No call-out fee for any roofing work in Fareham or PO14.
Yes. 24/7 emergency call-outs across Fareham. We aim for same-day attendance. No call-out fee.
Small extension or garage under 20m²: £900 to £1,800. Medium extension 15 to 30m²: £1,800 to £3,500. Large flat roof over 30m²: £3,500 to £6,000. All deck inspection included. Free quotes across Fareham and PO14.
Most single-storey extension and garage flat roofs in Fareham are completed in one day. Larger areas or where significant deck board work is needed may take two days. We confirm timing in the quote.
Yes. This is the ideal time — including a skylight in the flat roof replacement programme is more cost-effective than a separate return visit. We quote for skylight integration as a combined job.
Small extension or garage under 20m²: £900 to £1,800. Medium extension 15 to 30m²: £1,800 to £3,500. Large flat roof over 30m²: £3,500 to £6,000. All deck inspection included. Free quotes across Fareham and PO14.
Most single-storey extension and garage flat roofs in Fareham are completed in one day. Larger areas or where significant deck board work is needed may take two days. We confirm timing in the quote.
Yes. This is the ideal time — including a skylight in the flat roof replacement programme is more cost-effective than a separate return visit. We quote for skylight integration as a combined job.
Get In Touch
Free Quote in Fareham
No call-out fee. No obligation. Same-week availability across PO14.
