Honest 2025 pricing for GRP fibreglass, EPDM rubber and felt flat roofing across Shrewsbury and Shropshire. Garages, extensions, bay tops and dormer roofs — with a clear comparison of what each specification actually costs over its lifetime.
Free surveys across all Shrewsbury and Shropshire postcodes. GRP specialists.
☎ 01743 537230 — Book a SurveyGRP (glass reinforced plastic) fibreglass is the premium flat roofing specification for Shrewsbury properties. It is seamless, completely waterproof, handles any depth of standing water, and requires no maintenance throughout its life. It is the only flat roofing material we recommend as a first-choice installation.
| Application | Typical cost (GRP) |
|---|---|
| Single garage flat roof | £900–£2,000 |
| Double garage flat roof | £1,600–£3,200 |
| Rear extension flat roof (small) | £1,200–£2,400 |
| Rear extension flat roof (large) | £2,500–£4,500 |
| Bay top flat roof | £600–£1,400 |
| Dormer flat roof | £800–£2,000 |
All GRP installations include a 25-year product guarantee. The expected service life in Shrewsbury’s climate is 40+ years with no maintenance required.
EPDM (ethylene propylene diene monomer) rubber is the second-tier flat roofing specification — lighter than GRP, fully flexible, and with excellent resistance to thermal movement. It is available in single-piece sheets that eliminate the seam failures common on older felt systems.
| Application | Typical cost (EPDM) |
|---|---|
| Single garage flat roof | £700–£1,600 |
| Double garage flat roof | £1,200–£2,600 |
| Rear extension flat roof | £1,000–£3,500 |
| Bay top flat roof | £500–£1,200 |
| Material | Life expectancy | Guarantee | Relative cost |
|---|---|---|---|
| GRP fibreglass | 40–50 years | 25 years | Highest |
| EPDM rubber | 20–40 years | 15–20 years | Mid |
| Mineral felt (3-layer) | 15–25 years | 10 years | Lowest |
Not every flat roof issue requires replacement. GRP and EPDM roofs with isolated failures can often be repaired cost-effectively. Felt roofs with small blistered sections can be patched. Once the felt is failing across the main surface, repair becomes uneconomical.
| Repair type | Typical cost |
|---|---|
| GRP patch repair (small) | £150–£350 |
| EPDM lap re-sealing | £120–£280 |
| Felt blister repair | £150–£400 |
| Upstand and flashing repair | £180–£500 |
| Drain and outlet clearance | £85–£200 |
A standard single garage flat roof in GRP fibreglass costs £900–£2,000 in Shrewsbury. Rear extension flat roofs are £1,200–£4,000 depending on area. EPDM rubber is slightly cheaper, mineral felt cheaper still but with a shorter life expectancy.
Yes. Strip and disposal of the existing felt roofing is included in all our GRP installation prices. Deck inspection, any deck board replacement required, and correct drainage fall is assessed and included in the written quote before work begins.
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.
We aim to survey within 2–3 working days of enquiry and can often provide a written quote the same day as the survey. For urgent situations — an active leak on a flat roof — call 01743 537230 and we will prioritise the survey visit.
GRP fibreglass has the longest life expectancy — 40+ years with a 25-year product guarantee. EPDM rubber typically lasts 20–40 years. Mineral felt lasts 15–25 years depending on quality and installation. For a permanent solution in Shrewsbury’s wet climate, GRP is the correct specification.
Yes, in almost every case. The additional cost of GRP over mineral felt on a garage flat roof is typically £300–£600. GRP will last twice as long as quality felt and requires no maintenance. The lifetime cost of GRP is significantly lower.
Like-for-like flat roof replacement generally does not require planning permission. New flat roof additions to dwellings fall under permitted development rules in most cases. Conservation area and listed building properties may need prior approval. We advise at survey stage.
Isolated seam failures and small blistering sections on a GRP or EPDM roof can often be repaired. Once felt roofing begins blistering or cracking across the main surface, replacement is more cost-effective than ongoing patching. We survey and give an honest recommendation.
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.
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.
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.
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.
We cover the full Shropshire area from our Shrewsbury base, with no additional travel charge for any location within our coverage area. The same team, the same standards, and the same written 10-year guarantee apply on every job — whether we are working in a Victorian terrace in Belle Vue, a 1960s semi in Harlescott, a period villa in Church Stretton, or a modern estate in Telford.
Our coverage includes all Shrewsbury suburbs — Bayston Hill, Meole Brace, Monkmoor, Belle Vue, Harlescott, Copthorne, Radbrook and Kingsland — and all surrounding Shropshire towns including Telford, Oswestry, Whitchurch, Newport, Shifnal, Wem, Church Stretton and Market Drayton. We also cover the villages and rural properties between these centres across all SY and TF postcodes.
Free surveys are available across all of this coverage area with no call-out charge and no obligation to proceed. Call 01743 537230 to book.
Every job starts with a free survey — not a quote over the phone, not an estimate from the ground. We access the roof, inspect the defect and its cause, check for related issues in the surrounding area, and photograph the condition. The survey takes 20 to 45 minutes depending on roof size and access. You receive a written fixed-price quote the same day or the following morning.
We do not use pressure tactics, we do not offer discounts for booking on the day, and we do not manufacture urgency. If a job can wait a week safely we will tell you. If it needs addressing quickly we will tell you that too — along with the specific reason why.
Payment is never requested upfront for repair jobs. For larger replacement work, a deposit of 10 to 25 percent covers materials, with the balance due on satisfactory completion. We accept bank transfer and card. We do not operate as a cash-only business.
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.
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.
We survey every Shrewsbury and Shropshire property free of charge and provide a full itemised written quote before any work begins.
01743 537230 Request a Callback