Slim Cavity Units in Northumberland
Narrow-cavity glazing for conservation sightlines. Manufactured to size and delivered across Northumberland.
- 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
Slim Cavity Units in Northumberland
Free survey and fixed written price.
Slim Cavity Units across Northumberland
Half the Slim Cavity Units problems we fix in Northumberland started as a sizing assumption. Around here it is border stone farmhouses, colliery terraces and coastal fishing cottages, and that alone rules out anything bought by the pallet. Set against the harshest combination of cold, wind and salt in England, most joinery here eventually shows combined frost and salt damage stripping finishes within a few seasons. In practice that means narrow cavities that perform while keeping the sightline historic.
Each opening is recorded individually, since a terrace of identical houses rarely is. Tell us the problem rather than the solution and we will advise on both.
Local factor worth flagging early: Northumberland exposure justifies the heaviest sections and stainless fixings.
Towns covered
Keep the joinery you have
Upgrade performance without throwing away sound timber windows.
Cheaper than replacement
Typically a fraction of the cost of new units, with much of the benefit.
Measured before recommended
We find where the heat is actually going before suggesting a spend.
Ventilation kept compliant
Sealing a house up without creating a condensation problem.
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, Northumberland“Half the cost of replacement and the rooms hold heat noticeably better.”
Verified client, Northumberland“They fitted trickle vents we had not thought about, which stopped the condensation.”
Verified client, NorthumberlandWhat happens next
Four steps from first call to installed joinery. No pressure at any stage.
Thermal survey
We identify where the losses actually are, which is often not the glass.
Options and costs
Retrofit, secondary or seals only, priced side by side.
Installation
Carried out in situ, room by room, with minimal disruption.
Aftercare
Ventilation checked and maintenance guidance left with you.
Frequently asked questions
Do you cover Northumberland?
Yes. We cover the whole of Northumberland including Blyth, Cramlington, Ashington, Morpeth and the surrounding villages. Northumberland exposure justifies the heaviest sections and stainless fixings. Because the harshest combination of cold, wind and salt in England, we allow for it at survey stage rather than discovering it on the day.
Do you deliver nationwide?
Yes, we deliver across England, Wales and Scotland. Delivery is priced into the quotation so there is no separate charge added later.
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.
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.
What if the opening is out of square?
Most older openings are. The survey records the actual dimensions at several points and the unit is manufactured to suit, which is the main reason we survey rather than work from the sizes given over the phone.
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