Premium Secondary Glazing For Traditional Sash Windows.
Improving thermal efficiency, reducing noise and eliminating draughts in heritage homes whilst protecting traditional architecture.
The CSG System.
The CSG system is a patented, innovative secondary glazing solution designed to maximise performance while preserving conservation and heritage.
It eliminates draughts, significantly improves thermal efficiency, and reduces external noise by up to 50% — all while remaining nearly invisible. Our system works seamlessly with existing shutters and does not alter or damage heritage homes.
Scotland is home to some of the UK’s most beautiful traditional architecture. At CSG, we help homeowners improve the thermal efficiency of their heritage properties while protecting the architectural features that make them special.
You may also be eligible for a grant or loan — see https://www.homeenergyscotland.org/ to learn more.
We can cover most of Scotland, as well as many areas of England.
Protect Beautiful Traditional Architecture.
Benefits
Visit our Benefits and Specifications pages to discover the 12 key benefits our system adds to traditional homes, without compromising visual clarity.
Specifications.
You’ll also find detailed technical drawings, a BRE report on thermal performance, noise reduction test results, and supporting documentation.
Visit Our Showroom.
You’ll find us in Charlestown, Fife—just a quick trip from Edinburgh! Our showroom has the CSG system installed on a sash window. If you’d like to pop by for a look, just give us a call or send an email, and we’ll set up a time that works for you.
Gallery
Check out Gallery to see some of the beautiful homes and buildings that have installed the CSG System.
Frequently Asked Questions
Will My Shutters Still Work?
Yes! As we work with traditional listed buildings that so many of have shutters. Our system is designed to ensure full function of shutters just as normal.
Will it lower the window's U-Value?
We had BRE carry out a thermal efficiency report that concluded our system makes your window almost 50% more thermally efficient.
Do I need planning permission?
Every council has its own regulation and rules. In every council area we have applied listed building consent for has been approved with no problem. If in doubt please apply for Listed Building Consent and check with your local council. If you need help with this just let us know and we can assist.
When can I visit the showroom?
Every council has its own regulation and rules. In every council area we have applied listed building consent for has been approved with no problem. If in doubt please apply for Listed Building Consent and check with your local council. If you need help with this just let us know and we can assist.
Is it made with glass?
There are a few secondary glazing systems on the market made with various materials such as plastic. Our standard range is made with 4mm of toughened safety glass and we offer acoustic glass that is 6.8mm for customers looking to prioritise noise reduction.
Can I put the CSG system on to my curved sash windows?
Yes! We can accommodate curved sash windows.
How Much Do They Cost?
For a rough quotation please email us with the sizes of your sash windows. Costs will typically range from £600 – £1500 per window depending on size, location and various additional services we offer.
Have Any Questions Not Included? Please Get In Touch.
Customer Testimonials
Get In Touch.
Interested in preserving your windows with modern comfort? Get in touch today for expert advice and a free quote.
- Sales@csg-team.com
- 07471263800
- Camsie House, Charlestown, Fife, Scotland, KY11 3EE