A Challenging Roof Design

One-off builds don’t come with much more challenging roof design features than this new build house in Cambridgeshire.

The combination of a slate roof and a corbel brickwork design, as well as an unusual building layout, meant that the roof needed a set air gap above the brickwork and the last line of slate tiles had to kick out to accommodate the guttering.

Three different types of trusses were designed and manufactured for the job; all with varying depths of rafter which would normally mean different eaves heights. To overcome this, the trusses were designed with special cuts to accommodate the design, and hanging rafters to make sure the vent finished where it needed to.

As you will see from these images, where the roof doesn’t look like it fits, the rafter is supporting the truss to achieve the required finish above the corbelled detail. Gutters are fixed to the top course of brickwork. Additional lengths of timber have been employed in the attic area to make sure internal boarding doesn’t flatten the required insulation.

In the event, all the pre-planning and detail paid off on this complex design and production job, the roof went on perfectly.

If you have an interesting or challenging new build you’d like to talk to our design team about, contact enquiries@apex-te.co.uk.