Caerphilly coastal seaside home patio doors — Rosac survey & install

If you've got a coastal seaside home on your hands in Caerphilly, the recurring problem when quoting patio doors is salt corrosion on cheap chrome hardware within 2–3 years. Tired 80s sliding aluminium doors that stick, lose heat and rattle in the wind is the paired issue you'll usually hear about at the same visit. Our spec here is thermally broken aluminium or reinforced uPVC with toughened safety glass to BS EN 12150. Where the original glazing bars were 22mm ovolo, we match printed bars to that width — not the modern 26mm default. Seafront elevations often benefit from a rain deflector bar over the composite door letter plate — standard spec here. The rear garden extension pattern (added 80s–00s) usually holds the tired patio door — replace it as part of the same job. Alley access at the rear is barely wide enough for a single pane of 1200x900 glass — we plan lift paths around it. Foil colour choice on a semi is a shared question with the neighbour; matched pairs read cleaner than solo swaps. Concrete cills on post-war stock are cast into the wall; the frame sits on them without needing timber packers. Marine-grade stainless furniture is the coastal spec baseline — chrome and brass fail visibly within a couple of winters. Party wall proximity means the crew works from inside the room, not off a scaffold, whenever the front elevation allows. The two-storey bay carries loading from the roof valley — reinforced steel corner cores accept it without deflection. External foil cills are colour-matched to the frame — replace as a set or the elevation reads two-tone.