Secondary Glazing Specialists
for London Listed Buildings
Bespoke secondary glazing crafted for Britain's finest period properties. Preserving architectural integrity while delivering silence and thermal comfort.
54dB
Sound Reduction
65%
Heat Retention
2,400+
Listed Homes
Up to 80% Noise Reduction
Move the slider to simulate the acoustic transformation our secondary glazing delivers. From city noise to library silence.
Outside
78dB
Inside
51dB
Our acoustic secondary glazing
Listed Building Glazing Experts
Every heritage classification demands a unique approach. Our team holds specialist accreditations for all levels of listed building and conservation area compliance.
Grade I Listed
Buildings of exceptional interest. Our bespoke systems are approved for the most sensitive heritage structures in England and Wales.
340+
Grade I projects
Grade II Listed
Nationally important buildings of special interest. We work with conservation officers to ensure full compliance.
1,800+
Grade II projects
Conservation Areas
Areas of special architectural or historic interest. Our discrete installations preserve the character of entire streetscapes.
420+
Conservation areas served
Acoustic Glass Specifications
10.8mm Acoustic Laminate
Two layers of 4mm float glass bonded with a 2.8mm acoustic PVB interlayer, delivering class-leading sound insulation.
Rw 45dB
Weighted Sound Reduction
Thermal Retention
Reduces heat loss by up to 65%, dramatically lowering heating costs while eliminating cold draughts.
0.65
U-Value (W/m²K)
Acoustic Performance
Up to 54dB noise reduction, transforming busy urban environments into serene sanctuaries.
54dB
Maximum Reduction
Sight Lines
Ultra-slim 22mm aluminium frames, powder-coated to complement period joinery. Virtually invisible from the street.
22mm
Frame Profile
Security Enhancement
Additional glazing layer provides an extra barrier against forced entry, without altering the external appearance.
PAS 24
Security Standard
Bespoke Manufacture
Every panel is measured to 0.5mm tolerance and manufactured to order. No off-the-shelf solutions.
0.5mm
Manufacturing Tolerance
Free Secondary Glazing Survey
Every heritage property is unique. Our concierge survey process begins with understanding your home, your needs, and your aesthetic preferences.
Step 1
Your Property
Step 2
Requirements
Step 3
Consultation
Step 1 of 3