Assessing the Suitability of Cobham Lofts for Conversion

The elements that will determine whether lofts in Cobham are suitable for conversion include the type of structure, pitch of the roof and head height, as well as the presence of chimney stacks, water tanks and other obstacles.

The best way to make sure that your Cobham roof is suitable for conversion is to get in touch with the loft conversion specialists at Jones Brothers Loft Conversions Ltd in nearby Epsom. By inspecting the roof space, we will be able to decipher its physical dimensions and overall structure, before discussing your requirements…

The Inspection Process

The first thing we check during any inspection is the head height. We begin by measuring the distance from the top of the ceiling joist to the bottom of the ridge timber; the useable part of the roof should be no less than 2.2 metres (at an absolute minimum).

We then measure the pitch angle. The greater the pitch angle, the higher the central head height is likely to be. We can increase the floor area by adding a dormer, or by redesigning the roof. 

The next thing we take into account is the type of structure. There are two types of main structures that are used in roof construction. These come in the form of the more modern truss section type and the more traditional framed type. The latter can typically be seen in the lofts of Cobham houses built prior to the 1960s, on which ceiling joists, rafters and supporting timbers were cut to size on site before assembly.

This is the type of structure that is more suitable for attic conversions as it has more ‘structural input’. As a result, our experts can open up the space easily and at relatively little expense. We do this by strengthening the rafters and adding structural supports.

While the modern use of truss roof sections in lofts in Cobham and elsewhere allows builders to erect and felt roofs in a single day, they utilise thinner, cheaper timbers. Structural integrity is maintained with the use of diagonal timbers.

Yet the lack of loadbearing structures underneath means the roofs of these lofts require greater structural input when undertaking loft conversions. To overcome this issue, we can insert steel beams between the loadbearing walls to support the new floor joists. Such work requires skill, knowledge and the right equipment. For this reason, we would always advise using loft conversion specialists to undertake such work on your Cobham property.

If you live in or around the Cobham area and are considering different types of attic conversions – we are here to help! Please call Jones Brothers Loft Conversions Ltd at our Epsom base on 0208 393 8545!