Caerphilly barn conversion patio doors — Rosac survey & install

Owner-occupiers who bought the character property for the space, and holiday-let owners upgrading thermal performance to lower running costs. That's the mix reaching out for patio doors in Caerphilly on this property type — often as part of a wider refresh, sometimes as a like-for-like fix. French doors or a three-panel slider onto the yard is the usual rear opening. We often spec them with a matching sidelight to fill the original hay-door opening width. Post-war doors sat on a raised timber threshold; a Part-M part-plate replaces it cleanly at composite door install. Stone cills usually project only 40mm — the frame drip has to clear the projection without over-hanging. Sash cord pulleys behind the timber lining come out clean if the paint layers haven't fused them to the box. Off-street parking makes van access straightforward — we can stage glass in the driveway rather than on the pavement. Vaulted internal ceilings mean the crew works off a small tower for gable glazing — ground protection sheeting mandatory. Original front cills are usually blue engineering brick — leave them, drill through them for the frame fixings. External cill drips block with paint over the decades — raking them clean stops water sitting on the frame after install. Original 60s sliding aluminium frames cold-bridge — you can feel a two-degree temperature drop within a foot of the glass in winter. Salt air pits cheap aluminium at the fixing points; genuinely marine-grade powder coating resists.