Secondary Glazing Locations:
London & Home Counties Heritage Specialists
From Grade II* listed townhouses in Mayfair to Victorian sash windows in Richmond — bespoke secondary glazing engineered for London's most demanding properties.
Our Service Areas
Central London — The Royal Boroughs
Grade II* & Grade II Listed Building Specialist
Our most requested area — slimline frames invisible from street level, satisfying RBKC conservation officers.
Price per window
£1,100 – £1,700
West & South West London
Conservation Area Experts — Victorian & Edwardian Sash Windows
Article 4 Direction compliance specialists. U-values as low as 1.2 W/m²K for maximum thermal gain.
Price per window
£900 – £1,500
North London
Aesthetic-First Solutions for Period Mansions & Villas
Bespoke RAL powder-coat finishes matched to original period joinery. NW1, NW3, NW8 specialists.
Price per window
£900 – £1,500
Home Counties — The Commuter Belt
Large-Scale Thermal Upgrades & Soundproofing
Whole-property packages available. Ideal for detached and semi-detached properties near major A-roads and rail lines.
Price per window
£850 – £1,400
Heritage Performance Guide
London properties present unique challenges for secondary glazing. From the strict requirements of Kensington & Chelsea's conservation officers to the delicate frames of Hampstead's Georgian sashes, one size never fits all.
In these high-value areas, we don't just 'install windows'; we engineer acoustic barriers that preserve history. In Central London, noise levels from arterial roads like the A40 or the flight paths over Richmond often exceed 75dB. Our specialised 6.8mm Acoustic Laminate is designed to drop these levels by up to 54dB, while our slimline frames remain virtually invisible from the street, satisfying both aesthetic and regulatory demands.
54dB
Max noise reduction
1.2
Min U-value (W/m²K)
2,000+
London installations
Why London Pricing Is Different
Listed Building Complexity
- • Conservation officer pre-approval required in RBKC, Westminster, and Camden
- • Grade I & II* listings demand reversible, zero-damage installations
- • Slimline aluminium profiles matched to existing joinery profiles
- • Specialist survey required for properties on Grosvenor & Cadogan Estates
London Market Factors
- • London labour costs 20–35% higher than national average
- • Congestion Zone surcharges apply to Central London deliveries
- • Premium glass specs (6.8mm–10.8mm acoustic) standard in noise hotspots
- • Parking permits and access logistics factored into quotes
Get Your Guaranteed London Quote
Every London property is different. Tell us about yours and receive a detailed, no-obligation estimate from a heritage-approved specialist within 24 hours.