Loft Conversions are a great way of adding an extra room/ensuite , which in turn adds value to property.
Is my loft suitable for conversion?
The features that will decide the suitability of the roof space for conversion are the available head height, the pitch and the type of structure, as well as any obstacles such as water tanks or chimney stacks. An inspection of the roof space will reveal its structure and physical dimensions. Head Height: Take a measurement from the bottom of the ridge timber to the top of the ceiling joist; the useable part of the roof should be greater than 2.2m. Pitch Angle: The higher the pitch angle, the higher the central head height is likely to be, and if dormers are used or the roof is redesigned, then the floor area can be increased. Type of Structure: Two main structures are used for roof construction — namely traditional framed type and truss section type. The traditional framed type is typically found in pre-1960s houses where the rafters and ceiling joists, together with supporting timbers, are cut to size on site and assembled. This type of structure has more structural input, so is often the most suitable type for conversion. The space can be easily, and relatively inexpensively, opened up by strengthening the rafters and adding supports as specified by a structural engineer. Post 1960s, the most popular form of construction used factory-made truss roof sections. These utilise thinner – and therefore cheaper timbers – but have structural integrity by the addition of braced diagonal timbers. They allow a house roof to be erected and felted in a day, which is a big advantage to a builder. However, this type of truss suggests that there are no loadbearing structures beneath, and so opening up the space requires a greater added structural input. This will normally involve the insertion of steel beams between loadbearing walls for the new floor joists to hang on and the rafter section to be supported on — together with a steel beam at the ridge. This added structural input requires skill, knowledge, equipment and a far greater cash outlay.
NMC Can cover all aspects of your loft conversion from the initial design and planning right through to the job completion, give us a call today to arrange your free inspection!