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

Flat RoofingShrewsbury

Flat roofs on extensions, garages and outbuildings are common across Shrewsbury’s housing stock. In the town’s damp, river-influenced climate, material quality and drainage design matter more than in drier areas. A flat roof with poor drainage will deteriorate significantly faster than average in Shrewsbury’s conditions.

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Flat roofing in Shrewsbury costs £900–£2,000 for a garage roof in GRP fibreglass and £1,200–£4,500 for extensions. GRP is the recommended specification for Shrewsbury's wet climate — seamless, unaffected by ponding, 25-year product guarantee, 40+ year life. Drainage fall is assessed on every survey before quoting.

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GRP fibreglass flat roofing

GRP fibreglass flat roofing

GRP (glass reinforced plastic) is a seamless, single-layer system applied in liquid form and cured to a rigid finish. There are no joins or seams where water can penetrate. For Shrewsbury’s persistently damp climate — particularly properties near the Severn in Castlefields and the riverside areas — GRP is our most-recommended specification for extensions and garage roofs.

EPDM rubber flat roofing

EPDM (ethylene propylene diene monomer) is an extremely durable rubber membrane suited to larger flat roof spans. Its flexibility handles thermal movement well, which matters on the larger extension roofs common on 1980s and 1990s properties in Radbrook Green and Bayston Hill. EPDM carries excellent manufacturer warranties and requires very little maintenance once correctly installed.

What we cover

  • GRP fibreglass flat roofing (25-year warranty)
  • EPDM rubber flat roofing (30-year warranty)
  • Full deck inspection and substrate repair
  • Drainage design and fall improvement
  • Rooflight and access hatch installation
  • Annual maintenance inspections available

Typical Price Guide

Garage flat roof (GRP)£800–£1,800
Extension flat roof up to 20m² (GRP)£1,500–£3,000
Extension flat roof 20–40m² (GRP)£2,800–£5,000
EPDM rubber (per sq metre installed)£60–£90
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Customer Reviews

What Do Shropshire Homeowners Say About Us?

★★★★★

"New GRP flat roof on the rear extension. Clean job, completely watertight, and they sorted the drainage problem the previous felt roof had. Very pleased with the result."

Julie N. · Monkmoor, Shrewsbury
★★★★★

"EPDM rubber on the garage roof. Excellent finish, better value than felt over the lifetime, and they explained the maintenance difference clearly. Recommend without reservation."

Steve A. · Radbrook Green, Shrewsbury
★★★★★

"Old felt was ponding water after every shower. New GRP with proper fall built in. Completely transformed — no more standing water and no more worry."

Claire T. · Castlefields, Shrewsbury
Coverage

Which Shrewsbury Areas Do We Cover for Flat Roofing?

We cover the full SY1, SY2 and SY3 postcode area as well as surrounding Shropshire towns. Whether you’re in the town centre, the riverside suburbs or the outer estates, we’re local and we’ll be with you promptly.

Our team is based in Shrewsbury and handles all work directly — no subcontracting, no national company middlemen. The roofers who quote the job are the roofers who carry it out.

Areas we cover

Shrewsbury town centre · Belle Vue · Monkmoor · Meole Brace · Copthorne · Harlescott · Sundorne · Bayston Hill · Radbrook · Castlefields · The Mount · Kingsland · and all surrounding Shropshire towns within 20 miles.

Shrewsbury Roofing Experts
📍 Shrewsbury, Shropshire SY1
☎ 01743 537230
🕓 Mon–Fri: 7:30am – 6pm · Sat: 8am – 2pm
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FAQ

Frequently Asked Questions

GRP fibreglass is our most-recommended option for Shrewsbury due to the elevated moisture levels near the River Severn. It’s seamless, highly resistant to ponding damage, and carries a 25-year manufacturer warranty.

GRP is suitable for the vast majority of flat roofs in Shrewsbury — garages, rear extensions, bay tops and dormers. The one exception is very large-span flat roofs where thermal movement requires the flexibility of EPDM rubber. We specify the correct material for each application at the free survey.

Call 01743 537230 and describe what you've seen. We'll confirm whether a same-day visit is appropriate or book a survey within 2–3 working days. The surveyor accesses the roof, photographs the defects, and provides a written fixed-price quote the same day or the following morning. There is no call-out charge and no obligation to accept the quote.

Yes. We always assess whether repair is viable before recommending replacement. GRP and EPDM roofs with isolated failures can often be repaired cost-effectively. Felt roofs where the surface is blistering or cracking across the main area are typically past repair — but we survey and advise honestly on every job.

Yes. Roof light and fixed skylight installation can be integrated into any flat roof project. We specify the correct upstand height and flashing detail to prevent leaks — the most common failure point on flat roof lights is an inadequate upstand at the kerb.

GRP typically lasts 25–30+ years. EPDM can last 30–50 years. Traditional felt needs replacement after 10–15 years. If your flat roof is over 10 years old, it’s worth a free survey.

Garage flat roofs typically cost £800–£1,800. Extension roofs are usually £1,500–£5,000 depending on size and access. Free no-obligation surveys available.

Yes. Improving the fall (the slight slope built into the deck) and upgrading outlets is often done as part of a replacement. Ponding water is the primary cause of premature flat roof failure across Shrewsbury.

Expert Guides

Related Roofing Guides

Flat Roofing

GRP vs EPDM vs Felt: Which Is Right for Shrewsbury?

Three materials, three outcomes over 20 years. The honest comparison for Shropshire's wet climate.

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Flat Roofing

Flat Roof Drainage: The Standing Water Problem

Poor falls are Shrewsbury's most common flat roof problem — why it happens and the fix.

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Roof Replacement

5 Signs Your Roof Needs Replacing Not Repairing

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Coverage

Flat Roofing — All Locations

We cover all Shrewsbury suburbs and surrounding Shropshire towns. Click your area for local pricing and availability.

Flat Roofing Telford Flat Roofing Oswestry Flat Roofing Whitchurch Flat Roofing Newport Flat Roofing Shifnal Flat Roofing Bayston Hill Flat Roofing Belle Vue Flat Roofing Harlescott Flat Roofing Meole Brace Flat Roofing Monkmoor Flat Roofing Wem Flat Roofing Church Stretton Flat Roofing Market Drayton

How We Install and Replace Flat Roofs

1

Survey and drainage assessment

Before quoting, we assess the deck condition, the existing fall, and the drainage outlet specification. Replacing a flat roof over a deck with inadequate fall without correcting it is the most common reason flat roofs fail prematurely. We correct fall using tapered insulation where required.

2

Deck inspection and preparation

With the old roofing stripped, we inspect every deck board. Soft, waterlogged or structurally compromised boards are replaced before any new waterproofing is applied. We do not lay GRP or EPDM over a compromised deck.

3

GRP installation

GRP is applied in two stages — fibreglass matting laminated with polyester resin, followed by a topcoat. Upstands are formed to a minimum 150mm height at all perimeters. Drips are formed at leading edges. All work is completed in a single session where possible — we do not leave part-cured GRP overnight.

4

25-year guarantee

Every GRP installation receives a written 25-year product guarantee from the manufacturer plus our 10-year workmanship guarantee. Both are provided in writing at job completion.

Why Homeowners in Shropshire Choose Us

Honest Surveys

We survey every property physically before quoting — never from the ground or from photographs. If repair is the right answer we say so. We do not push replacements when they are not warranted, and we do not recommend repairs when replacement is the more economical decision over a five-year horizon.

Written Fixed Prices

Every quote is written, itemised and fixed before any work starts. No verbal estimates, no day-rate pricing, no additions once the job has begun without prior agreement. You know the exact cost before we lift a tile — and the price does not change unless the scope changes and you agree to it.

Our Own Team

No subcontractors, no agency labour. The team that surveys your roof is the team that carries out the work. We have been building our reputation in Shropshire since 2003 by taking direct responsibility for every job — something a contractor who farms work to subcontractors cannot offer.

10-Year Guarantee

All re-roof and major repair work carries a written 10-year workmanship guarantee issued at job completion. We are fully insured with £5m public liability cover. NFRC registered. We have been trading in Shropshire for over 20 years — our guarantee means something because we will be here to honour it.

Our Approach: Survey, Quote, Complete

Every job starts with a physical survey — not a quote over the phone, not an estimate from the ground. We access the roof, inspect defects and their causes, check for related issues in surrounding areas, and photograph the condition. The written fixed-price quote is issued the same day or the following morning. Survey visits are free across all Shropshire postcodes with no call-out charge and no obligation to proceed.

We do not use pressure tactics, do not offer day-of discounts to rush a decision, and do not manufacture urgency. If a job can wait two weeks safely we tell you. If it needs addressing immediately we explain exactly why. Every quote is written and itemised — no verbal estimates, no additions once work has started without prior agreement.

Pricing and Payment

All prices are fixed before work starts. For repair jobs under £500, payment is due on completion. For larger jobs — re-roofs, full guttering replacements, chimney rebuilds — a deposit of 10 to 25 percent covers materials, with the balance on satisfactory completion. We never ask for full payment upfront on any job. We accept bank transfer and card. Full VAT receipts are issued at completion on all work.

Any contractor requiring full cash payment upfront, offering large on-the-spot discounts, or approaching you unsolicited at your door should be treated with caution. Legitimate roofing contractors do not operate this way. If you are unsure about a quote you have received, call us on 01743 537230 for an independent assessment.

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