Porthmadog, Gwynedd
Heritage Slim Double Glazing in Porthmadog
Slim-profile sealed units let you double glaze a period sash or Georgian bar window without fattening the glazing bars.
If you have been quoted for heritage slim double glazing in Porthmadog and the price looked suspiciously round, it was almost certainly a standard size with a filler piece. We do not work that way.
What is included
- Weathered cills with a proper drip groove, so water leaves the timber instead of tracking back under it.
- Trickle ventilation designed into the head where Building Regulations require it, not drilled in afterwards.
- Engineered laminated sections on anything over 1.2m, which resist bowing far better than solid stock.
- Weathered cills with a proper drip groove, so water leaves the timber instead of tracking back under it.
We treat slim glazing in Porthmadog as joinery rather than a product line. That means real sections, real ironmongery and a finish specified for the exposure the building actually gets.
If you are working to a planning or listed building condition in Gwynedd, send us the wording — we will specify to it and provide the drawings you need.
Slim Glazing in Porthmadog
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Questions
What sort of guarantee do you offer?
Ten years on the joinery and the manufacture, and the sealed units carry their own manufacturer's warranty. Accoya frames carry the 50-year above-ground timber warranty from the material supplier. All of it is confirmed in writing with the quotation.
Will the timber warp or stick?
Not if it is specified correctly. Sticking comes from moisture ingress into unsealed end grain, or from solid stock used where laminated sections were needed. Kiln-dried timber, sealed end grain, factory finishing and engineered sections on longer spans between them eliminate it.
Can you fit trickle vents?
Where Building Regulations require background ventilation, we design it into the head of the frame at manufacture. That looks far better and performs far better than a vent drilled through a finished frame on site.
Do you work on listed buildings?
Regularly. Listed building consent turns on detail — sightlines, glazing bar sections, opening method and glass type. We survey the existing joinery, record the profiles and produce drawings you can submit. We will not quote a detail we know will not pass.
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Use the guide price tool for a realistic range, then book a free measured survey in Porthmadog to firm it up. No obligation either way.