Slim Cavity Units in Lewisham
Narrow-cavity glazing for conservation sightlines. Covering Lewisham and the surrounding Greater London 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
Slim Cavity Units in Lewisham
Free survey, fixed written price.
Slim Cavity Units for Lewisham properties
If you are looking at Slim Cavity Units in Lewisham, the timber is only half the decision. Around here it is Victorian and Edwardian terraces, mansion blocks and post-war infill, and that alone rules out anything bought by the pallet. The exposure here is high pollution load and sheltered urban humidity, which is exactly the condition that causes paint failure on south-facing sashes and rot at the bottom rail. Everything we do here comes back to narrow cavities that perform while keeping the sightline historic.
We survey before anything is cut, so the schedule reflects the opening as built rather than as drawn. Send what you have, even if it is only a phone photo, and we will take it from there.
Worth knowing locally: large numbers of properties sit in conservation areas with like-for-like replacement conditions.
See everything we cover in Lewisham or view Slim Cavity Units across Greater London.
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, Greater London“Half the cost of replacement and the rooms hold heat noticeably better.”
Verified client, Greater London“They fitted trickle vents we had not thought about, which stopped the condensation.”
Verified client, Greater LondonTalk 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