Roof trusses and loft conversions

Houses use a truss frame to support the roof. The roof trusses often take up a lot of space in the loft and may lead you to think that you can not use the space. However it is possible to convert a truss roof by replacing the existing trusses with steal trusses that do not protrude into the loft space.

Types of conversions

Dormer loft conversion

A dormer loft conversion is an extension to the existing roof, that projects vertically from a sloping roof, creating additional floor space and headroom within the building. Internally, a dormer has vertical walls and horizontal ceiling, compared to the normal slanted sides of a loft conversion. A dormer is the most common type of loft conversion as you are often allowed to construct them without gaining planning permission, although planning permission may be required.

Mansard Loft Conversion

A mansard loft conversion is a conversion to the rear of your property. This type of conversion has a flat roof, with the back wall sloping inwards at an angle of 72 degrees. Windows are usually housed within small dormers. Mansard loft conversions almost always require planning permission, due to the large changes in the roof shape and structure. This style of loft conversion is named after a 17th-century, French architect Francois Mansart.

Velux Loft Conversion

Velux loft conversions are also known as rooflight loft conversions. Velux are the leading manufacturer of roof windows, now with over 60 years experience of making roof windows/lights. With this type of conversion the roof line is unaltered, as the velux windows are installed fitting flush to the roof line, leaving the original roof structure untouched. Therefore, for this type of loft conversion you generally do not need planning permission, which is what makes this type of conversion so different from the other types. Also, due to the fact that no large alterations should be made to the roof, it is likely to help keep the cost of the conversion down.

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