Slim Cavity Units in Essex
Narrow-cavity glazing for conservation sightlines. Manufactured to size and delivered across Essex.
- 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 Essex
Free survey and fixed written price.
Slim Cavity Units across Essex
We take a fair volume of Slim Cavity Units work across Essex, and almost none of it repeats. Given the estuary bungalows, 1930s ribbon development and timber-framed village stock that dominates locally, standard sizes are the exception not the rule. What accelerates it is the driest climate in the UK with sharp summer heat, and shrinkage cracking and glazing bead failure from repeated drying cycles follows sooner than owners expect. Where we put the effort is narrow cavities that perform while keeping the sightline historic.
A surveyor visits first and records the real dimensions, at several points on each opening. One call is usually enough for us to tell you roughly where the price will land.
Something particular to this area: low rainfall shifts the risk from rot toward movement and seal failure.
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, Essex“Half the cost of replacement and the rooms hold heat noticeably better.”
Verified client, Essex“They fitted trickle vents we had not thought about, which stopped the condensation.”
Verified client, EssexWhat 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 Essex?
Yes. We cover the whole of Essex including Chelmsford, Colchester, Basildon, Southend-on-Sea and the surrounding villages. Low rainfall shifts the risk from rot toward movement and seal failure. Because the driest climate in the UK with sharp summer heat, we allow for it at survey stage rather than discovering it on the day.
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.
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.
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.
What guarantee do you provide?
Ten years on workmanship, covering manufacture and the factory-applied finish. Where we install, the installation is covered too. It is issued in writing with the handover paperwork.
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