Citadel Joinery

Timber Frames


We design, fabricate, and assemble bespoke timber frames in green oak and Douglas Fir. Every frame is cut at Bryncoch Sawmill and raised on your site by our crew.

Oak frames — the traditional choice. Exceptionally strong, naturally durable, and beautiful when finished. Green oak seasons in situ and tightens the joints as it dries.

Douglas Fir frames — a cost-effective alternative with the highest strength-to-weight ratio of any softwood. Same design service, same fabrication quality. Ideal where budget matters or where the warm amber tone of Douglas Fir suits the building.

We build: Garden rooms and studios. House extensions and orangeries. Entrance porches. Complete new-build frames. Barn conversions and agricultural buildings. Workshops and commercial structures.

Species: Oak or Douglas Fir — we recommend the right species for your project.
Service: Design, fabrication, and assembly. Supply-only kits also available.