Secondary Double Glazing for Sash Windows
Secondary double glazing adds a discreet internal glazing panel to your existing sash windows, making homes warmer, quieter and safer while preserving period features.
A practical alternative for homeowners who need to improve efficiency without altering traditional sash window designs, secondary glazing creates a thermal and soundproof barrier while keeping your windows’ character.

Cost-effective, low-maintenance and quick to install, secondary double glazing is a smart choice for homeowners and commercial businesses looking for better energy efficiency and comfort without the hassle of a full window replacement.
Key Features of Secondary Double Glazing for Sash Windows
✓ Ideal for older homes that require modern performance without altering traditional features
✓ Cuts outside noise by up to 80%
✓ Boosts thermal efficiency
✓ Adds an extra layer of security
✓ Discreet design that preserves the look of traditional sash windows
✓ Custom glazing options available
✓ Prevents condensation and protects wooden frames
✓ Low-maintenance solution
Receive my free quotation
Why Choose Misty Glaze?
When it comes to upgrading sash windows, quality and expertise matter. Our experienced time provides precision-fitted secondary double glazing that enhances your entire home.
1. Specialists in Sash Window Glazing
We have extensive experience working with traditional sash windows, ensuring each installation is carefully tailored for the best results.
2. Fully Bespoke Solutions
All glazing is custom-built to fit perfectly with your sash windows, maintaining their aesthetic appeal and functionality. We also provide double glazing replacements.
3. Mess-Free Installation
Our team carefully installs secondary glazing with minimal disruption, keeping your home clean and your windows fully operational.
4. High-Quality Materials & Custom Glass Options
From acoustic and toughened glass to thermal insulation upgrades, we offer a range of solutions to suit your needs.
5. Trusted by Homeowners & Businesses
Our reputation is built on delivering quality craftsmanship, honest service and lasting results for properties across London and Essex.
6. Transparent Pricing & No Hidden Costs
We provide fair, competitive pricing with no surprises — just expert advice and the best solution for you.
Get Your Free Quote Today
Don’t let draughts, noise or security concerns affect your home. Our secondary double glazing is a smart solution that enhances comfort while preserving sash windows. With expertise and a hassle-free installation process, we make improving your windows simple.
Contact us today on 0208 504 9980 for a free consultation and find out how we can help.
Receive my free quotation