Timber glazing upgrades in Knowle
Thermal and glazing upgrades to timber windows and doors you already own, so you gain performance without losing the joinery. Covering Knowle and the wider Bristol 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 Knowle
Free measured survey in Knowle.
Timber glazing upgrades in Knowle
We take a fair volume of Trickle Vents and Ventilation work across Knowle, and almost none of it repeats. You are mostly dealing with Georgian Clifton terraces, Victorian bay-fronted streets and converted warehouses around here, so openings vary more than people expect. What accelerates it is mild wet westerly weather with limited hard frost, and moss and algae growth followed by paint blistering on shaded elevations follows sooner than owners expect. What we concentrate on is keeping background ventilation compliant once you seal a house up.
The measuring is done by the people responsible for the fit, which concentrates the mind. Rough dimensions and a couple of photographs are enough for us to price it properly.
Something particular to this area: Clifton's Georgian stock frequently requires exact sash box replication.
What we cover locally
- Retrofit Double Glazing in Knowle
- Slim Cavity Units in Knowle
- Secondary Glazing in Knowle
- Misted Unit Replacement in Knowle
Survey visits in Knowle are usually booked within a week. There is no charge for the survey and no obligation to proceed.
Made to size for Knowle
Every product below is manufactured to your dimensions.
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, Bristol“Half the cost of replacement and the rooms hold heat noticeably better.”
Verified client, Bristol“They fitted trickle vents we had not thought about, which stopped the condensation.”
Verified client, BristolKnowle questions
Do you fit, or supply only?
Both. Supply-only is common for trade and contractor clients. For private clients we usually recommend supply and fit, because responsibility for the fit and the finish then sits in one place.
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.
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 price from drawings?
Yes. Send a drawing set or a schedule and we will price against it. If anything is ambiguous we will query it before quoting rather than assume and reprice later.
Will the finish need maintaining?
A factory-applied microporous finish typically needs inspection every three to five years, sooner on exposed coastal elevations. Maintaining it is far cheaper than letting a coating fail and the timber take up water.
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