Flat Roof Extensions: Everything you Need to Know

Flat roof extensions
This low-level flat green roof extension was designed by Jeff Kahane + Associates (Image credit: Jeff Kahane + Associates)

Flat roof extensions can provide a simple, cost-effective solution that ticks all the right boxes, especially for many smaller extensions. The comparative ease of constructing flat roof extensions and their discreet visual impact can save having to shell out for a more expensive tiled roof in many cases. 

Flat roofs can also come in handy where using a bulky pitched roof when building an extension would overshadow or block existing windows. There may even be an added bonus where the space can be utilised as a balcony, subject of course to planning permission and Building Regulations

Hambleside Danelaw used on a green roof of a Passivhaus in Melrose, Scotland (Image credit: Hambleside Danelaw)
Jeff Kahane + Associates. (Image credit: Jeff Kahane + Associates)
Ian Rock

Chartered surveyor Ian Rock MRICS is a director is Rightsurvey.co.uk and the author of eight popular Haynes House Manuals, including the Home Extension Manual, the Self Build Manual and Period Property Manual.

Ian is also the founder of Zennor Consultants. In addition to providing house surveys, Zennor Consultants provide professional guidance on property refurbishment and maintenance as well as advising on the design and construction of home extensions and loft conversions, including planning and Building Regulations compliance.

Ian has recently added a 100m2 extension to his home; he designed and project managed the build and completed much of the interior fit-out on a DIY basis.