Specialist Flat Roofers in Swindon & Oxford
Flat Roofing Solutions That Stay Watertight for Decades
- EPDM Rubber, GRP Fibreglass & Felt Flat Roofing
- New Installations, Repairs & Replacements
- Family-Owned, Fully Insured & Backed by 15-Year Guarantee
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FLAT ROOFING IN SWINDON & OXFORD
Expert Flat Roofing Services Across Swindon, Oxford & Surrounding Areas
At Crown Guard Roofing Services, we are specialist flat roofers working across Watchfield, Swindon, Oxford, Witney, Carterton, Abingdon, Didcot and the surrounding areas. As a family-owned business with over 10 years of hands-on experience, we’ve installed, repaired and replaced countless flat roofs on homes, extensions, garages, dormers, porches and commercial buildings across the region.
Flat roofs work hard. They take the full force of British weather day after day — pooling rain, frost, summer sun and high winds — and a poor installation will let you down within just a few years. The good news? A properly fitted flat roof, using the right modern materials, can last for 30, 40, even 50+ years with virtually no maintenance.
That’s exactly what we deliver. We use only proven, high-performance flat roofing systems — EPDM rubber, GRP fibreglass and high-grade felt — installed by skilled tradesmen who know how to detail them properly. Every flat roof we lay is fully insured and backed by our 15-year workmanship guarantee, so you know it’s built to last.
Whether you need a brand-new flat roof, a complete replacement, or a repair to fix leaks and seam failures, we’ve got you covered.
FLAT ROOFING SERVICES WE OFFER
Whatever your flat roof needs, our family-run team handles it from start to finish:
Roof Repair Services We Specialise In
- New Flat Roof Installations Brand-new flat roofs for extensions, garages, outbuildings and commercial properties — laid on properly prepared decking with full insulation where required.
- Flat Roof Replacements Stripping back tired, leaking or end-of-life flat roofs and replacing them with modern, long-lasting systems. We dispose of all old materials safely.
- Flat Roof Repairs Fast, lasting fixes for leaks, splits, blisters, ponding water, failed seams, lifted edges and damaged flashings.
- Flat Roof Surveys & Inspections Honest, no-obligation inspections — we'll tell you straight whether your roof needs a repair, an overlay or a full replacement.
- Garage & Outbuilding Roofs Complete flat roofing for single garages, double garages, workshops, sheds and other outbuildings.
- Extension & Dormer Roofs Flat roofs on extensions, dormers, porches and bay window roofs — properly detailed and integrated with your main roof.
- Commercial Flat Roofing Larger-scale flat roofing for shops, offices, industrial units and commercial properties — minimum disruption, maximum quality.
- Insulation Upgrades Cold roof and warm roof insulation upgrades to improve energy efficiency and meet current building regulations.
SIGNS YOUR FLAT ROOF NEEDS ATTENTION
Flat roofs often fail gradually before completely letting go. Spotting the warning signs early can save you from major water damage further down the line
On the Roof
- Splits, cracks or tears in the membrane
- Bubbles, blisters or lifted seams
- Pooling water that doesn’t drain after 24 hours
- Worn, chalky or faded surface
- Loose or damaged flashings around edges
- Vegetation, moss or debris build-up
Inside the Property
- Damp patches or staining on ceilings
- Active drips during rainfall
- Bubbling or peeling paint on internal walls
- Musty smells from the room below
- Sagging ceilings or visible water marks
- Rising damp readings around the affected area
If you’ve spotted any of these signs, get in touch — most flat roof issues are far cheaper to fix early than to leave until water damage spreads.
BENEFITS OF A QUALITY FLAT ROOF
A modern, professionally installed flat roof from Crown Guard Roofing isn’t a compromise — it’s an excellent long-term solution. Here’s what you gain
- Decades of watertight protection — Modern systems like EPDM and GRP can last 30–50+ years when properly installed.
- Virtually maintenance-free — Unlike older felt roofs, modern systems need almost no upkeep.
- Cost-effective — Flat roofing is generally faster and more affordable to install than pitched roofing.
- Excellent for extensions — The ideal solution for kitchen extensions, garages, dormers and outbuildings.
- Improved insulation options — Warm roof systems dramatically improve energy efficiency.
- Modern aesthetic — Available in a range of finishes and colours to suit your property.
- Easy access for solar/services — Flat roofs make it simpler to install solar panels, satellite dishes and other equipment.
- Fully guaranteed — Every installation is fully insured and backed by our 15-year workmanship guarantee.
OUR FLAT ROOFING PROCESS
Whether it’s a small garage roof or a large extension, our process is the same — clear, professional and stress-free from start to finish.
Free Survey & Honest Advice
We visit your property, fully inspect the existing roof or area, and discuss the right system for your project. We'll explain the pros and cons of each option in plain English — no jargon, no upselling.
Detailed Written Quotation
You'll receive a clear, fixed-price written quote covering all materials, labour, decking, insulation (if needed) and waste removal. Everything itemised, nothing hidden.
Professional Installation
Our skilled, fully insured team carries out the work to the highest standard — using quality materials and proper detailing around edges, flashings and upstands where most flat roofs fail.
Final Check & 15-Year Guarantee
Once finished, we walk you through every aspect of the work, clear the site, and provide your 15-year workmanship guarantee in writing.
You’re in Safe Hands
We’re here to help with your roofing emergencies 24 hours a day, 365 days a year providing fast, reliable, fully insured support whenever you need it most
Why Choose Us for Your Flat Roof?
Flat roofing is one area where the difference between a good roofer and a bad one shows up fast. A poorly installed flat roof can start leaking within just a year or two — while a properly installed one will quietly do its job for decades. As a family-owned roofing company, our reputation is personal — and we put that reputation on the line with every flat roof we install.
- Family-owned and locally trusted for over a decade
- Fully insured with full public liability cover
- 10+ years of flat roofing experience
- 15-year workmanship guarantee on every flat roof
- Specialists in EPDM, GRP & felt systems
- Free, no-obligation surveys and quotes
- Fixed-price quotations — no hidden costs
- Skilled, experienced flat roofers (no subcontractors)
- Tidy working practices & full clean-up included
Frequently Asked Questions
Our customers often ask the same questions about flat roofing, so here are clear, honest answers to the most common ones:
That depends entirely on the system:
- Felt roofing: 15–25 years
- GRP fibreglass: 25–30+ years
- EPDM rubber: 30–50+ years
A well-installed, well-detailed flat roof from a reputable installer will easily reach the upper end of those ranges. Our 15-year workmanship guarantee covers the installation itself.
For most domestic projects we recommend EPDM rubber — it offers the longest lifespan, virtually no seams, and the lowest long-term maintenance. GRP fibreglass is the best choice for walk-on roofs and balconies. Felt remains a solid, budget-friendly option for outbuildings and sheds. We'll always recommend the right system for your specific project, not just the most expensive.
Costs vary depending on the size of the roof, the system you choose, whether insulation is being upgraded, and access. Felt roofs are typically the cheapest, GRP slightly more, and EPDM offers the best long-term value. We provide free, fixed-price written quotes so you'll know the exact price before any work begins.
It depends on the age, condition and material. Small splits, lifted seams and minor leaks can often be repaired effectively. However, if the membrane is widely worn, brittle, or beyond its expected lifespan, a replacement usually works out more cost-effective long-term. We'll inspect it for free and give you an honest answer either way.
Most domestic flat roofs (garages, extensions, dormers) can be completed in 1–3 days depending on the size, the system and weather conditions. Larger commercial jobs may take longer.
Old-style felt roofs from decades ago had a reputation for failing, which is where the idea comes from. Modern systems like EPDM and GRP, properly installed by experienced roofers, are extremely reliable and leak-resistant for decades.
Yes — Crown Guard Roofing is fully insured with comprehensive public liability cover. We're happy to provide proof of insurance before any work begins.
Yes. If your flat roof has been damaged by storms or other insurable events, we can provide detailed quotes, photographs and reports to support your insurance claim.
Just call us on 07747 599995 or fill in the quick quote form on our website. We'll arrange a convenient time to inspect your roof and provide a clear written quotation with no obligation.
Need a Flat Roofer?
We’re here to help with your roofing requirements 365 days a year, no matter your situation. Family-owned. Fully insured. Backed by a 15-year guarantee.