Types of Roof

Modern trussed roof design

This type of roof can be found in almost all modern built houses.  These houses are usually built with no load bearing walls on the inside of the 1st floor.  The new timber suspended floor may need to be supported on the perimeter walls.  RSJ steel beams are almost always inserted to accommodate the long spans supporting the new floor.

Minimum dimension necessary for a loft conversion measure from ceiling to very top of the adjoining rafters- 2.500 metres.  An example of a modern truss roof can be viewed on Previous Projects Case Study 7 Loft Conversion.

PLEASE NOTE:- If your roof is not high enough then a dropped landing or lowering the ceilings should be considered.

Pre 1960”s traditional cut & pitched roof design.

This type of roof is normally found in older style houses and doesn’t require as much existing height as a modern trussed roof. Load bearing walls are usually present which are used to support the new floor joists.  An example of a traditional cut and pitched roof can be viewed on Previous Projects Case Study 3 Loft Conversion.

For minimum dimension necessary for a loft conversion measure from ceiling to the bottom of ridge board- 2.300 metres.

PLEASE NOTE:- If your roof is not high enough then a dropped landing or lowering the ceilings should be considered.

Visit our next page to learn more about The Party Wall Act.

Velux windows
Visit our Velux page to view different types of windows and blinds.