Flat roof replacement costs explained: budget your project with confidence

Flat roof replacement
(Image credit: Getty Images)

While flat roof replacement costs can vary widely depending on a number of factors, such as the materials you are using, the size of the roof you are covering, who is carrying out the work and where in the country you live, it is still possible to get a good idea of what this job is likely to end up costing you. 

Flat roofs can require replacing for a number of reasons, although it must be said that modern construction methods and materials have made it much less likely for them to suffer from leaks or to be as poorly insulated as they once were. 

mark brinkley
Mark Brinkley

Mark is the author of the ever-popular Housebuilder’s Bible and an experienced builder. He has written for publications such as Homebuilding & Renovating for over three decades. An experienced self builder, his latest self build, a contemporary eco home built to Passivhaus principles, was created on a tight urban brownfield plot.

tim phillips
Tim Phillips

Tim is a quantity surveyor and runs Quantiv.uk, with almost 30 years of experience across the commercial and residential sector. He also regularly writes articles for Homebuilding & Renovating magazine and website. 

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Flat roofing material prices (including membrane, batten and fixings)
MaterialCost per m2 (materials only)
Single ply membrane£90
Natasha Brinsmead

Natasha is Homebuilding & Renovating’s Associate Content Editor and has been a member of the team for over two decades. An experienced journalist and renovation expert, she has written for a number of homes titles. Over the years Natasha has renovated and carried out a side extension to a Victorian terrace. She is currently living in the rural Edwardian cottage she renovated and extended on a largely DIY basis, living on site for the duration of the project. She is now looking for her next project — something which is proving far harder than she thought it would be.