2025 Price Guide
Flat Roof Costs UK
EPDM, GRP fibreglass, and felt roofing price guide
Quick Answer: Flat roof costs in the UK range from £40-80/m² for felt to £100-150/m² for GRP fibreglass in 2025. A typical garage flat roof (15m²) costs £800-1,500 for felt or £1,500-3,000 for EPDM/GRP. EPDM at £80-120/m² offers the best value with a 25-30 year lifespan.
Cost by Material Type
| Material | Cost/m² | 15m² Total | Lifespan |
|---|---|---|---|
| Felt (3-layer) | £40-80 | £600-1,200 | 10-15 years |
| EPDM Rubber | £80-120 | £1,200-1,800 | 25-30 years |
| GRP Fibreglass | £100-150 | £1,500-2,250 | 30-50 years |
