⭐ 4.9/5 · 127 Reviews · GRP & EPDM Specialists

Flat Roofing Huntingdon

GRP fibreglass, EPDM rubber and felt flat roofing for extensions, garages and outbuildings across Huntingdon. 25-year systems with a 10-year guarantee.

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Flat Roofing

Flat Roofing in Huntingdon

Flat Roofs in the Ouse Valley

Huntingdon's Ouse Valley humidity is particularly harsh on flat roofs. Trapped moisture underneath old felt promotes timber decay faster than in drier locations — we regularly find soft, punky decking boards when stripping old flat roofs across Oxmoor and Stukeley Meadows. Every flat roof replacement in Huntingdon starts with a full deck inspection, with boards replaced before the new membrane goes down.

Drainage Design for Huntingdon

Proper drainage is critical on Huntingdon flat roofs. The valley location means higher rainfall intensity during storms, and many older flat roofs were installed with minimal fall — resulting in standing water that shortens the roof's life. We design every Huntingdon flat roof with a minimum 1:40 fall using tapered insulation boards where necessary.

Our Process

How We Handle Flat Roof Installation in Huntingdon

Deck Inspection

We strip the old membrane and inspect every board. In Huntingdon, the Ouse Valley damp corridor with 10-15% higher humidity than surrounding higher ground means deck deterioration is more common than average — we find damp or soft boards on the majority of Huntingdon flat roof replacements.

Drainage Design

We calculate the correct fall for your specific roof — minimum 1:40, achieved with tapered insulation boards where the existing deck is flat. For Huntingdon properties, proper drainage is critical given the Ouse Valley damp corridor with 10-15% higher humidity than surrounding higher ground.

Membrane Installation

EPDM or GRP is installed to manufacturer specification. For Huntingdon, we typically recommend EPDM for its moisture resistance and flexibility.

Detailing and Handover

Edge trims, upstand flashings and drainage outlets are finished to a standard that handles Huntingdon's conditions. You receive the 10-year guarantee and maintenance guidance specific to your chosen system and Huntingdon's climate.

Customer Reviews

What Our Customers Say

★★★★★

"New EPDM flat roof on the garage. When they stripped the old felt, the boards were damp underneath — classic Huntingdon dampness. They replaced the lot and the new roof is bone dry."

Mike J. · Oxmoor, Huntingdon

★★★★★

"Extension flat roof re-done in GRP with proper tapered insulation for drainage. No more standing water after rain. Should have been built like this from the start."

Janet L. · Stukeley Meadows, Huntingdon

★★★★★

"Old flat roof on the kitchen extension had been leaking on and off for years. New EPDM membrane with a 25-year guarantee. Finally sorted."

Dave R. · Godmanchester, Huntingdon

Honest advice

How to Tell You Need Flat Roofing

Flat roofs fail in predictable ways. If your garage, extension or dormer roof shows any of these, it is time to look at repair or replacement.

Ponding water that sits for more than a day or two after rain
Blistering, splitting or cracking of the covering
A damp patch on the ceiling directly below the flat roof
A felt roof that is more than 15–20 years old

When it is not the answer: If the deck is sound and the covering is only locally split, a repair or overlay is cheaper than a full replacement — we will tell you honestly which yours needs. Read the full guide.

Warm deck versus cold deck flat-roof build-ups compared layer by layer.

Access

Access, Scaffolding & Permits in Huntingdon

Most flat roofs are low and reached from towers; scaffold is added only for extension roofs at height or with parapets. Scaffold is specified for: first-floor extension roofs, parapet detailing, and any flat roof over a storey up - always itemised in your written quote, never a hidden extra, and we arrange it.

Huntingdon's older centre and riverside stock near the Great Ouse bring access and damp considerations. Pavement scaffold and skip permits go through Huntingdonshire District Council; allow a few working days on streets like the High Street, streets around the Market Square where space is tight.

Pricing

What Flat Roofing Costs in Huntingdon

Job	Typical range	Notes
Single garage roof (EPDM)	£800 – £1,500	Best value for garages
Single garage roof (GRP)	£1,000 – £1,800	Harder wearing
Large garage / outbuilding	£1,500 – £2,500	Per size & deck
Extension flat roof (EPDM)	£2,000 – £4,500	Damp-area choice
Extension flat roof (GRP, walkable)	£2,500 – £6,000	Walkable surface
New timber deck (per m², if needed)	£40 – £70	Only if deck has failed

What moves the price

Roof area and the number of upstands, parapets and penetrations
System choice — EPDM, GRP or felt
Deck condition beneath the old covering, only fully visible once stripped
Correcting inadequate falls to stop ponding

Worked example: Replacing a single-garage felt roof on the Arbury estate, ~18m², with new EPDM, trims and a new deck where needed, typically runs £1,100–£1,600. A 35m² walkable GRP roof over a Romsey Town kitchen extension with a rooflight kerb is nearer £3,500–£4,500.

No deposit on garage roofs under £1,500; you pay on completion. Larger roofs are staged after materials are on site. VAT included.

Guarantee

The Guarantee in Plain Terms

Our flat-roof workmanship is guaranteed for 10 years, on top of the 20–25 year manufacturer material warranties on EPDM and GRP.

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.

FAQ

Frequently Asked Questions

Garage flat roofs in Huntingdon cost £800–£2,500. Extension roofs range from £2,500–£6,000 depending on size and system. Free quotes for all work.

The Ouse Valley humidity traps moisture under old felt membranes, accelerating deck rot. It also promotes algae growth on the surface that can block drainage outlets. Modern breathable systems and proper drainage design solve both issues.

Always. In Huntingdon, we find deck damage on the majority of flat roof replacements due to the valley humidity. We replace all soft or damaged boards before fitting the new membrane — there's no point putting a new roof on rotten timber.

Both work well. GRP gives a rigid, seamless finish ideal for walkable areas. EPDM is lighter and more flexible — better for larger garage roofs. We recommend the best option after surveying your specific roof.

Signs include: standing water that doesn't drain within 48 hours, bubbling or cracked membrane, soft or spongy areas when walked on, and visible splits at joints or edges. If your felt roof is over 15 years old, it's likely past its useful life.

Yes. All flat roof installations carry our 10-year workmanship guarantee. GRP and EPDM systems also have manufacturer warranties of 20–25 years.

Yes. Tapered insulation boards can be fitted above the deck during replacement, improving both drainage and thermal performance. This is especially worthwhile during a full flat roof replacement.

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Why Huntingdon Specifically

Why Huntingdon Matters for Flat Roofing

Huntingdon's Ouse Valley location creates a natural damp corridor where humidity runs 10–15% higher than the surrounding higher ground — this persistent moisture accelerates every type of roof deterioration. For flat roofing, this means battens and felt on Huntingdon roofs deteriorate faster than equivalent materials on higher ground — we find damp timber on the majority of strip-and-retile jobs in this area.

The town spans medieval timber-framed buildings on the High Street, Georgian properties around Market Square, and the large 1970s–80s estates at Oxmoor and Stukeley Meadows where most of the roofing demand concentrates.

What This Means for Your Flat Roofing

Every Huntingdon re-roof includes enhanced ventilation specification to manage the valley humidity, and we use treated battens rated for damp exposure rather than standard softwood. Huntingdon is 18 miles north-west from our Cambridge base — close enough for same-day response on urgent work and regular maintenance visits.

Materials

Flat Roof Materials for Huntingdon

We use two flat roofing systems in Huntingdon: EPDM rubber membrane (1.2mm Firestone or ClassicBond) and GRP fibreglass (Scott Bader resin with 450gsm mat). For Huntingdon properties facing Ouse Valley damp corridor with 10-15% higher humidity than surrounding higher ground, EPDM is typically our first recommendation — its flexibility handles moisture and temperature variation better than rigid GRP.

Deck Standards for Huntingdon

The deck beneath the membrane determines how long the roof lasts. We use 18mm WBP plywood for GRP installations — never OSB, which flexes and causes GRP to crack. In Huntingdon, the elevated humidity means we sometimes specify marine-grade plywood for superior moisture resistance. A flat roof is only as good as what is underneath it.

We are here seven days a week to help with your roofing needs. Whether it is a quick question, a free survey or an emergency that cannot wait, call 0122 366 6465 and speak to our Cambridge team directly. No call centres, no automated menus — just a local roofer who knows your area and will give you an honest answer.

Flat Roofing Huntingdon

Flat Roofing in Huntingdon

Flat Roofs in the Ouse Valley

Drainage Design for Huntingdon

How We Handle Flat Roof Installation in Huntingdon

Deck Inspection

Drainage Design

Membrane Installation

Detailing and Handover

What Our Customers Say

How to Tell You Need Flat Roofing

Access, Scaffolding & Permits in Huntingdon

What Flat Roofing Costs in Huntingdon

What moves the price

The Guarantee in Plain Terms

Frequently Asked Questions

More Roofing Services

Why Huntingdon Matters for Flat Roofing

What This Means for Your Flat Roofing

Flat Roof Materials for Huntingdon

Deck Standards for Huntingdon

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