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Gwynedd · Wales
Timber Sash Windows in Gwynedd
Traditional box sash profiles with slim double glazing and draught seals.
- Free measured survey
- Fixed written quote
- Workshop-made, site-fitted
- 10-year workmanship guarantee
- Fully insured
Gwynedd is a county of slate-roofed stone cottages in quarrying villages and coastal holiday properties. That is exactly the kind of building stock a sash window has to be drawn around, so we allow for it at survey stage rather than on fitting day — walls get checked for wind and plumb, floors for level, and the setting-out is taken from the worst reading, not the best.
How we approach it
We build timber sash windows as cabinetmakers rather than fitters: machined joints, real carcass construction, and a finish applied under workshop conditions before anything reaches your Gwynedd address.
How we build it
Moisture matters more than most people expect. Timber is conditioned before machining, and anything going into a kitchen, utility or bathroom is specified in materials that will not swell at the bottom edge. That is why the base of a well-made unit still closes cleanly after five winters.
Finish and materials
Finishing happens in the workshop wherever possible. Sprayed paint gives an even film that brushwork cannot match, and the only work left on site is the final touch-in around scribes and fixings.
| Guide price | from £1,400 per linear metre, fitted |
|---|---|
| Lead time | 10–12 weeks from signed drawings |
| Construction | Accoya, factory finished |
| Survey area | All of Gwynedd, including Bangor, Caernarfon, Porthmadog, Pwllheli |
Want a number now? The indicative price tool gives a range in about a minute. A free survey in Gwynedd turns it into a fixed written quote.
Towns we cover
Other joinery for Gwynedd
What happens next
Four steps, no surprises
Survey
A joiner visits, measures the opening, checks for level and plumb, and talks through how you want to use the space.
Drawings & quote
You get a setting-out drawing and a fixed written price. Nothing is ordered until you have approved both.
Workshop
Parts are machined, assembled and finished under cover while the site carries on with other trades.
Fit & handover
We fit, scribe, adjust and touch in, then walk you through care and adjustment before we leave.
Straight answers
Timber Sash Windows in Gwynedd — common questions
Can traditional sash windows be double glazed?
Yes. Slim-profile double glazed units from 11mm fit into a properly made sash without the sightlines going heavy. They weigh more, so the counterweights are recalculated and the cords upgraded.
Cords and weights, or spiral balances?
Cords and weights for a traditional box sash — they are repairable indefinitely and feel right. Spiral balances suit a slimmer box and are the only option where there is no weight pocket, but they wear out and need replacing.
What timber do you use?
Accoya as standard for painted sashes — it is dimensionally very stable, which matters in a component that has to slide. European redwood is available at lower cost with a shorter finish life.
Will the new windows still rattle?
No. The brush seals take up the clearance the sashes need to slide, so they are quiet in wind while still moving freely.
How do I pay, and when?
A deposit at order to cover materials, a stage payment when the work leaves the workshop, and the balance on completion after you have inspected the fit. Everything is written into the quotation before you commit.
Start with a measurement
Tell us the space in Gwynedd — we’ll tell you what it costs
Every quote starts with a free measured survey, so the price you get is the price you pay. No deposit is taken until you have drawings you are happy with.