Sash window repair in Harrow
Repair, draught proofing and restoration of existing sash windows, keeping the original joinery wherever it is sound enough to save. Covering Harrow and the wider 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
Quote for Harrow
Free measured survey in Harrow.
Sash window repair in Harrow
Secondary Glazing around Harrow is a different job from one street to the next. Around here it is Victorian and Edwardian terraces, mansion blocks and post-war infill, and that alone rules out anything bought by the pallet. high pollution load and sheltered urban humidity is the local complication, and paint failure on south-facing sashes and rot at the bottom rail is what it eventually causes. The part that matters is internal glazing that improves comfort without touching the original.
A surveyor visits first and records the real dimensions, at several points on each opening. A quick call or a photograph of the opening is usually enough to get you a price.
One local point to factor in: large numbers of properties sit in conservation areas with like-for-like replacement conditions.
What we cover locally
- Sash Window Repair in Harrow
- Draught Proofing in Harrow
- Sash Cord Replacement in Harrow
- Splice and Scarf Repair in Harrow
Survey visits in Harrow are usually booked within a week. There is no charge for the survey and no obligation to proceed.
Made to size for Harrow
Every product below is manufactured to your dimensions.
Sash Window Repair
Targeted repair rather than wholesale replacement.
Learn more →Draught Proofing
Brush seal systems routed into the existing sashes.
Learn more →Sash Cord Replacement
New cords, rebalanced weights and serviced pulleys.
Learn more →Splice and Scarf Repair
New timber let into decayed cills and bottom rails.
Learn more →Sash Window Restoration
Full strip, repair, reglaze and redecorate.
Learn more →Secondary Glazing
Discreet internal glazing for heat and noise.
Learn more →Rattle and Rot Surveys
Honest condition report on what is worth saving.
Learn more →Sash Window Painting
Full preparation and microporous decoration.
Learn more →What clients tell us
Feedback collected directly from completed projects. Full written references are available on request before you commit.
“They talked us out of replacing four windows that just needed cords and seals.”
Verified client, Greater London“The rattle in the front bedroom has gone completely and the room is noticeably warmer.”
Verified client, Greater London“Worked room by room over three days and left the place clean each evening.”
Verified client, Greater LondonHarrow questions
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.
Do you take a deposit?
Not before the measured survey. A deposit is only requested once the survey is complete and you have approved the final schedule and price.
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.
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.
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.
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