Roof Carpentry in Windsor for Extensions and Loft Conversions

Windsor spans Georgian townhouses in the streets nearest the castle, Victorian and Edwardian terraces through Clewer and Dedworth, large detached houses on the roads around the Great Park, and newer developments toward Old Windsor and Datchet. Each brings a different roofline, and none of them were built to a standard geometry a prefabricated truss can simply drop onto — which is exactly the situation a cut roof, built rafter by rafter on site, is suited to.

Most of our Windsor roof carpentry work falls into two categories: cut roofs for single and two-storey extensions, and loft conversion roof carpentry — new rafters, dormer framing, and the structural alterations needed to convert a loft into habitable space. Both require working from an engineer's or architect's drawing, cutting timber to the specified sizes and grades, and leaving the structure ready for Building Control inspection.

Dormer framing is a frequent request on Windsor loft conversions, particularly through Clewer and Dedworth where terrace roof spaces often have the pitch and depth to make a genuinely usable room once a dormer is formed. We frame dormers to the engineer's design and to the dimensions set out on the planning drawings, so the finished opening matches what was approved — important in a town where conservation area status and proximity to the castle mean planning scrutiny is often closer than elsewhere.

The larger detached houses around the Great Park bring their own challenges — wider spans, more complex hip and valley junctions, and sometimes a structural ridge beam rather than a simple ridge board. Every structural roof alteration we carry out in Windsor is designed by a structural engineer or architect before we start cutting timber; our role is to build precisely to that approved design and leave the work accessible for Building Control.

Roof carpentry, as we carry it out, is structural timber work only. We do not supply or fit roofing membranes, felt, battens for tiles, roof tiles or slates, leadwork, flashing, or guttering. Those trades follow on from the carpentry, usually a roofing contractor or leadworker working to their own specification.

We hand over a finished, inspected timber structure ready for the roofing trades to batten, felt, tile and weatherproof. We also do not design roof structures — structural alterations are carried out to a structural engineer’s or architect’s design, and the completed work is inspected by Building Control.

These are indicative carpentry-only ranges based on recent Berkshire projects — they exclude roofing and weatherproofing, engineer’s fees, and Building Control fees. An itemised quote follows the drawing review or site visit.

Windsor’s larger plots around the Great Park tend toward the upper end of these ranges given typical roof spans. Send your drawings and we will give you an exact, itemised price.