Multi-pane window with decorative hanging plates overlooking green garden view in Perth UK

Bespoke secondary glazing installed using proven methods that deliver positive results for your property
Based in Perth

Latest industry news and updates. Practical guides for energy savings. Real stories from properties we've improved.

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Expert guidance from our window insulation experts

Actionable energy-saving advice

Updates on modern glazing solutions

Window insulation insights for your home

Our insights blog is your go-to resource for everything related to secondary glazing, window insulation, and energy efficiency. Cocoon Window Insulation shares the newest trends and proven techniques to help keep your home warmer and quieter. If you live in Scotland, you’ll find practical advice that tackles draughty windows, noise pollution, and rising heating costs. Drawing on our day-to-day experience at Cocoon Window Insulation, we ensure all content reflects real-world solutions from residential work through to church projects and wider commercial projects. Whether it’s an older building or a modern property, our articles are designed to make life easier and homes more comfortable.

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Tall timber sash window with secondary glazing looking out onto garden and building UK

Insights & Case Studies

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We highly recommend the product and the service is excellent with highly reliable, competent and courteous installers. We have used Glaze and Save TA Cocoon since 2015 to insulate our windows in an 1860 house. The latest installation in a bedroom was, as always, impressive. It has made a huge difference to reduce condensation (now none!) and to the amount of heating (less according to our graph!). In addition it is truly invisible. They designed the secondary insulation system so one of the windows could be opened. The system is easily maintained and removed when required.

Sara Wood, Google