How Much Does It Cost to Install a Flat Roof?
Flat roofs are a popular choice for extensions, garages, porches, and commercial buildings. But how much does it really cost to install one? At Lee Roofing Services, we’re often asked this question—so here’s a full breakdown of flat roofing costs, materials, and what influences the final price.
Average Flat Roof Installation Costs in the UK
Flat roof prices vary depending on the material, property size, and access. Here’s a general guide:
- Felt roofing: £50–£70 per m²
- EPDM rubber roofing: £70–£90 per m²
- GRP (fibreglass) roofing: £80–£110 per m²
- Lead flat roofing: £100–£140+ per m²
Example: Installing a 20m² EPDM flat roof may cost between £1,400 and £1,800 including labour and materials.
What Affects Flat Roof Pricing?
Several factors influence how much your flat roof will cost:
- Roof size and shape
- Chosen roofing material
- Condition of the existing roof (if replacing)
- Access to the roof (scaffolding may be needed)
- Additional insulation or drainage work
Our Flat Roofing Services
At Lee Roofing Services, we specialise in the installation of:
- EPDM rubber roofs – durable and low-maintenance
- GRP fibreglass roofs – watertight and long-lasting
- Traditional felt roofs – cost-effective for garages and outbuildings
All our flat roofs are installed to the highest standards, with a strong focus on longevity and value for money. We also offer repairs, replacements, and maintenance for existing flat roofs.
Get a free quote today and find out how affordable your new flat roof can be.
Frequently Asked Questions
How long does a flat roof last?
Depending on the material, flat roofs can last anywhere from 10–40 years. EPDM and GRP systems tend to have longer lifespans than felt.
Is planning permission needed for a flat roof?
Most flat roof installations do not require planning permission unless part of a larger extension or structural change. We can advise based on your specific project.
What’s the best material for a flat roof?
EPDM is ideal for residential properties thanks to its flexibility and lifespan. GRP is great for more complex shapes or seamless finishes. Felt is more budget-friendly but may need replacing sooner.
Do you offer guarantees?
Yes, we offer warranties on all new flat roof installations. The length depends on the material used—up to 20–25 years for some systems.
Can you replace an old flat roof?
Absolutely. We handle full flat roof replacements, including stripping off old materials, installing new timbers if needed, and fitting a brand-new waterproof system.
Need expert advice or a tailored quote?
Contact Lee Roofing Services today for a friendly, no-obligation consultation.
