Made about 7.3 miles from Swiss Cottage
Secondary glazing in Swiss Cottage
Secondary glazing for Swiss Cottage homes, made to measure about 7.3 miles from our workshop in N18 and fitted by our own team across NW3.
Covering NW3 and the surrounding streets

Secondary glazing for Swiss Cottage homes
The housing in Swiss Cottage is largely mansion blocks, Victorian houses converted to flats and post-war estates. Behind Victorian sash windows, vertical sliding secondary glazing aligned with the meeting rail keeps the view uninterrupted and lets both windows open for ventilation.
For flats where the lease or freeholder prevents changing external windows, secondary glazing fitted inside is usually the simplest way to reduce traffic noise and heat loss. In modern homes with sound double glazing, secondary glazing is mainly worthwhile for noise, particularly in bedrooms facing main roads, railways or flight paths.
The Finchley Road (A41) is one of the busiest roads in North London, so acoustic glazing is often the first thing people ask about. We help agree designs with managing agents or freeholders and plan access and parking in advance, as shared buildings and controlled parking zones make careful planning essential.
Secondary glazing is a discreet second window fitted on the inside of your existing windows, leaving the originals untouched. It suits listed buildings, conservation areas, flats where external windows cannot be changed, and anyone wanting to cut noise and draughts without replacing period windows.
- Keeps original windows in place
- Reduces draughts and outside noise
- Panels open or lift out for cleaning
Questions from Swiss Cottage
Do I need planning permission for secondary glazing in Swiss Cottage?
Some streets in Swiss Cottage fall within conservation areas and the Alexandra Road Estate is listed, so we check with Camden Council and freeholders before quoting. Secondary glazing is fitted internally, so it does not usually need planning permission or Building Regulations approval, but listed buildings may need listed building consent first.
How soon can you fit secondary glazing in Swiss Cottage?
Lead times vary by product and workload — confirmed with your quote. Being about 7.3 miles from our factory makes surveys, fitting days and aftercare visits easy to arrange.
Is secondary glazing allowed in listed buildings in Swiss Cottage?
Secondary glazing is generally seen as less intrusive than replacing original windows, because it sits inside and is reversible. However, listed building consent may still be required, so speak to the council's conservation officer before work starts. We can provide product details to support your application.
Can I see samples before I decide?
Yes. Our showroom is at Unit G, 1 Anthony Way, London N18 3QT (Mon–Fri 8am–5pm), about 7.3 miles from Swiss Cottage. We can also bring samples to your home in Swiss Cottage at the free survey.
Secondary glazing we make and fit
New windows now.
Pay over 1–5 years.
Finance on orders from £1,000 over 1–5 years, or our standard terms of 50% / 25% / 25%.
See finance optionsAda Windows Limited is an introducer appointed representative of Ideal Sales Solutions Ltd T/A Ideal4Finance. Ideal Sales Solutions is a credit broker and not a lender (FRN 703401).
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Other services in Swiss Cottage
Free quote for secondary glazing in Swiss Cottage
Send your requirements and a few photos — our team will come back with a clear, no-obligation price.


