Double Glazing in Devon, Cornwall, Dorset & Somerset
A-rated sealed units, fitted by a small local team. Honest quotes, 10-year guarantee, no high-pressure sales.
Warmer, quieter, cheaper to run
Modern A-rated double glazing cuts heat loss by up to 75% versus single glazing and significantly reduces road and weather noise — a real difference in older Devon farmhouses, exposed Cornish coastal properties and 1930s Dorset semis alike.
We install uPVC, aluminium and timber-effect double-glazed windows across the South West, with argon-filled sealed units and warm-edge spacers as standard. Every project is surveyed in person and quoted in writing — no estimates over the phone, no upsell scripts.
Double glazing in your town
We fit double glazing across 119+ towns in the South West. Pick yours for property-specific guidance:
Frequently asked
What does double glazing actually do?
Two panes of glass sealed with an argon-filled cavity dramatically cut heat loss, condensation and outside noise compared to single glazing — typically lowering heating bills by 15–25% in older South West homes.
How much does double glazing cost in Devon, Cornwall, Dorset or Somerset?
For a typical 3-bed semi we usually quote between £4,800 and £8,500 fully fitted, depending on frame material (uPVC vs aluminium vs timber-effect), glass spec and number of openers. Every quote is itemised — no high-pressure sales.
uPVC, aluminium or timber-effect — which is best?
uPVC is the best all-rounder for value and thermal performance. Aluminium suits modern extensions and slim sightlines. Timber-effect uPVC is ideal for conservation areas and period properties where appearance matters.
How long do double-glazed windows last?
A quality A-rated unit installed correctly should last 25–35 years. Seals usually outlast frames in our region — coastal salt is the main accelerant, which is why we fit marine-grade hardware as standard near the coast.
Can I keep my existing frames and just upgrade the glass?
Sometimes — if the frames are structurally sound we can replace just the sealed units. We'll always tell you honestly whether that's worth doing or whether full replacement makes more sense.
Frames still in good shape?
If your existing double-glazed frames are structurally sound but tired or the wrong colour, our on-site spraying service can refresh them in any RAL for a fraction of replacement cost.
Ready to start your project?
Free quotes · 10-year guarantee · Friendly local service.