Everything You Need to Know About Dormer Roofs

dormer roofs

Dormer loft conversions and dormer roofs are extensions which are built on the back side or front of an existing roof. By adding dormer roofs, you can convert a small, unusable attic space into a full room with enough height and loads natural light, so it can be enjoyed properly. 

Types of Dormer Roofs

The flat roof dormer Is the most common type of dormer roof. This is the cheapest style of dormer to build, and also offers the most internal additional space. A shed dormer also has a single planed flat roof, but this slopes downwards at an angle, and appears to blend in a bit more with the original roof. 

A gable fronted dormer, otherwise known as a ‘dog-house dormer’ is the more attractive option which has a gable wall extension up to the existing ridge line, and a new section of roof is built outwards, to the new cable end. A hipped roof dormer is the nicest looking option with three sloping planes of a hipped roof meeting at the ridge of the dormer.

The Pros and Cons 

Dormer loft conversions offer a large amount of additional space in comparison to other styles of loft conversions, this is mainly because of the extra headroom. This is the case in particular, with flat roof dormers, which also provide a room with straight walls and a flat ceiling.

A dormer roof will also provide a large amount of extra natural light and ventilation. On top of this, the room made will be versatile, with enough room for a playroom, showers, wardrobes, and other large pieces of furniture.

There is a style of dormer roof to suit most types of the houses in the UK, such as Victorian terraced, modern detached houses, and semi-detached houses. 

Some people think that flat roofed dormers aren’t as aesthetically pleasing as other loft conversions, but this is down to preference. Whilst gable fronted dormers, and hipped roof dormers are generally more attractive on a roof, these can be more of an expensive option, with less additional space created internally.

Planning Permission

Most cases of adding a dormer roof extension to your house would fall under permitted development (work you can do without planning permission). However, there are some cases where you would need to apply for planning permission, such as having your property situated in an area of outstanding natural beauty – its best to check. If there are any doubts, it is recommended to get a Lawful Development Certificate. This provides you with written proof that your conversion is lawful should it be questioned.

Building Regulations

Building regulations approval is needed on any loft conversion, regardless of the need of planning permission. These are applied to make sure that the structure built is 100% safe. It will cover sections such as stability, sound insulation, and structural strength. 

If you would like a quote, or have any questions, don’t hesitate to get in touch.


Article Name
Everything You Need to Know About Dormer Roofs
When getting a dormer loft conversion you need to consider the different styles, the pros and cons, and any planning permission and building regulations.
Publisher Name
Aber Roof Truss