The Royal Borough · London
Secondary Glazing & Windows in Kensington & Chelsea
From the white-stucco crescents of South Kensington to the garden squares of Notting Hill, the Royal Borough has one of the highest concentrations of listed and conservation-area housing in Britain. We help its owners upgrade comfort while keeping every period detail intact.
- FENSA
- Which?
- CERTASS
- TrustMark
Your local specialist in Kensington & Chelsea
Kensington & Chelsea is defined by its grand mid-Victorian stucco terraces, elegant Georgian townhouses and red-brick Queen Anne-style mansions. Much of the borough falls within one of its 38 conservation areas, and thousands of individual homes are statutorily listed — which means replacing original windows is rarely permitted.
This is exactly the situation secondary glazing was made for. Fitted discreetly behind your existing sashes, it delivers modern warmth and quiet without altering a single external detail, so it satisfies the borough's famously rigorous planning department while transforming how a home feels.
We also fit heritage-style timber and aluminium windows, elegant entrance doors and bespoke rear extensions where a property sits outside the tightest controls — always matched to the refined character the Royal Borough expects.
Neighbourhoods & postcodes we cover
Kensington & Chelsea architecture
Matched to how Kensington & Chelsea was built
We tailor every installation to the period homes that define Kensington & Chelsea.
Stucco-fronted terraces
The borough's signature white and cream painted terraces carry tall, slender box sashes. Our vertical sliding secondary units mirror the glazing bars so the change is invisible from the pavement.
Garden-square townhouses
Grand four- and five-storey houses around Ladbroke and Pembridge squares benefit from full-height acoustic glazing that quietens the street while preserving the shutters and sashes.
Red-brick mansion blocks
Knightsbridge and South Kensington mansion flats gain real relief from traffic noise with laminated acoustic glass tuned to the busy roads below.
Conservation & listed homes
Upgrades that respect Kensington & Chelsea's planning rules
With 38 conservation areas and thousands of listed buildings, RBKC operates one of the strictest planning regimes in London. Secondary glazing is reversible and internal, so it typically needs no planning permission and is the upgrade the borough's conservation officers most readily accept.
Up to 75%
less heat loss through your original windows
Up to 80%
less traffic, rail and aircraft noise
Since 1973
family-run, FENSA-registered and fully guaranteed
Recent local work
Projects across Kensington & Chelsea
A snapshot of the kind of homes we help across the borough.
Notting Hill, W11
Discreet vertical sliding units to a stucco-fronted townhouse on a garden square
Chelsea, SW3
Acoustic secondary glazing for a Grade II listed home near the King's Road
South Kensington, SW7
Slim glazing to a red-brick mansion flat overlooking a busy route
What we install
Our services in Kensington & Chelsea
A complete range of home improvements, expertly fitted and fully guaranteed.
Also in Kensington & Chelsea
Opening up the back of your Kensington & Chelsea home?
We also design and fit made-to-measure aluminium bi-fold doors across Kensington & Chelsea — slim frames, wide spans and year-round warmth for kitchens, extensions and garden rooms.
How it works
From first call to aftercare
- 01
Free Kensington & Chelsea survey
A specialist surveyor visits, measures each window and recommends the right system for the period and planning context.
- 02
Design
We design discreet units matched to your sightlines, with acoustic, thermal or security glass to suit.
- 03
Manufacture
Every panel is made to measure to the exact dimensions of your original windows.
- 04
Installation
Our own fitters install cleanly in a day for most homes, protecting your floors and original windows throughout.
- 05
Aftercare
Your installation is fully guaranteed, with friendly local aftercare whenever you need it.
FAQs
Secondary glazing in Kensington & Chelsea — your questions answered
More London boroughs
We also cover these areas
Ready to improve your Kensington & Chelsea home?
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