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.
Enjoy a Warmer, Quieter and more Energy Efficient Home.
Visit Our Showroom.
You’ll find us in Charlestown, Fife—just a quick trip from Edinburgh! Our showroom has the system installed on a real sash and case window, so you can see exactly how it works. 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.
Customer Testimonials
Get In Touch.
Interested in preserving your windows with modern comfort? Get in touch today for expert advice and a free quote.