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Flat Roofs

How Long Does A Flat Roof Last?

By FixMyRoof Editorial Team 31 March 2026 1 min read Reviewed by a qualified roofer
All guides on FixMyRoof are reviewed by experienced roofing professionals to ensure accuracy. Our reviewers have a minimum of 10 years of hands-on industry experience.

Flat roofs are a popular choice for UK extensions, garages, and modern homes. But how long can you expect your flat roof to last?

Flat Roof Lifespans by Material

Felt Flat Roofs

Traditional felt flat roofs typically last between 10 to 20 years, depending on the quality of the felt and the installation.

EPDM Rubber Roofs

EPDM (Ethylene Propylene Diene Monomer) rubber roofs are one of the most durable options, with a lifespan of 25 to 50 years.

GRP Fibreglass Roofs

GRP (Glass Reinforced Plastic) fibreglass roofs can last 30 years or more when properly installed and maintained.

Liquid Applied Roofs

Modern liquid-applied systems can last 20 to 25 years and offer excellent waterproofing properties.

Factors That Affect Flat Roof Lifespan

Regular maintenance is the single most important factor in extending the life of your flat roof. Annual inspections can catch small problems before they become expensive repairs.

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