Loft Conversion Roof Structure

These are suitable for most types of home including terraced house loft conversions.

Loft conversion roof structure.

The most common style of structural loft conversion these are an extension to the existing roof building out sections with vertical walls from the roof to add floor space and room for windows. This design is used where the original roof had little or no headroom and creates sufficient volume for an additional storey. This could be a hip to gable loft conversion or a mansard conversion for example. In the roof space as the name suggests the ridge board is the length of timber which runs horizontally along the apex of the roof.

Changing the roof structure for a loft conversion. Where you re adding a large dormer. An almost flat roof is placed over the top. This type of loft conversion involves one or both slopes of the roof being replaced with a new structure with very steep sloping sides almost as steep as the walls.

Altering the roof structure floor joists most roofs are constructed with internal support struts in the loft propping up the rafters and purlins horizontal roof beams in traditional cut and pitched roofs and making up the web of braces in modern trussed rafter roofs. However the average dormer loft conversion with a double bedroom and en suite costs about 35 000 45 000.