Timber glazing upgrades in Cornwall
Thermal and glazing upgrades to timber windows and doors you already own, so you gain performance without losing the joinery. Serving Cornwall and the surrounding area.
- Made to size from a measured survey, never cut down from stock
- FSC-certified timber with chain-of-custody paperwork
- Fixed written quotation with the lead time stated
- 10-year workmanship guarantee in writing
Free measured survey · No obligation · Reply within one working day
Quote for Cornwall
Free survey across the county.
What we see in Cornwall
Retrofit Double Glazing in Cornwall is rarely a catalogue job. Local property is overwhelmingly granite fishermen's cottages, slate-hung terraces and modern coastal builds, which is why we never quote from a catalogue. the most severe salt and wind exposure in England is the local complication, and accelerated coating failure and salt crystallisation damage at glazing lines is what it eventually causes. This is really a job about reworking the rebate so a sealed unit fits without bulking the section.
Each opening is recorded individually, since a terrace of identical houses rarely is. Send us sizes and a photograph and we will come back with a fixed written price.
Worth knowing locally: Cornish exposure grades mean specification should assume worst-case wind-driven rain.
Products available in Cornwall
All made to size and delivered across the county.
Retrofit Double Glazing
Sealed units fitted into your existing timber sashes.
Learn more →Slim Cavity Units
Narrow-cavity glazing for conservation sightlines.
Learn more →Secondary Glazing
Independent internal glazing for heat and noise.
Learn more →Misted Unit Replacement
Failed sealed units swapped without a new window.
Learn more →Draught Sealing
Perimeter sealing on windows and external doors.
Learn more →Acoustic Glazing
Laminated and asymmetric units for noisy locations.
Learn more →Thermal Survey
Where the heat is actually going before you spend.
Learn more →Trickle Vents and Ventilation
Compliant background ventilation after sealing.
Learn more →What clients tell us
Feedback collected directly from completed projects. Full written references are available on request before you commit.
“The survey showed most of the loss was around the frames, not through the glass at all.”
Verified client, Cornwall“Half the cost of replacement and the rooms hold heat noticeably better.”
Verified client, Cornwall“They fitted trickle vents we had not thought about, which stopped the condensation.”
Verified client, CornwallCornwall questions
Do you cover Cornwall?
Yes. We cover the whole of Cornwall including Truro, Falmouth, Newquay, St Austell and the surrounding villages. Cornish exposure grades mean specification should assume worst-case wind-driven rain. Because the most severe salt and wind exposure in England, we allow for it at survey stage rather than discovering it on the day.
How long does a typical order take?
Most made-to-size orders run six to ten weeks from survey to delivery. Conservation and heavily detailed work can take longer, and we confirm the lead time in writing at quotation rather than leaving it open.
Can you work on a listed building?
Yes, and a significant share of our work is listed or conservation area. We can supply drawings and section details to support a listed building consent or planning application, though the consent itself remains the owner's responsibility.
Do you work in hardwood or softwood?
Both. Engineered hardwood is the default where movement or exposure is a concern, and slow-grown softwood is often the better value choice for painted work in sheltered positions. We will tell you which we would specify and why.
How do you handle glazing?
Standard double glazed units for most work, and slim-cavity units where a conservation officer has restricted sightlines. Single glazing with putty lines is available where the consent requires it.
Can you match an existing profile?
Yes. If you can supply a section, a photograph with a rule in shot, or an old unit, we can replicate the profile. For conservation work this is usually the condition the planning officer will apply.
Talk to us about your project
Free, no obligation, and a fixed figure in writing. We will tell you honestly if what you are asking for is not the right answer.
Request a quote Call 0800 088 6248