Gecko Glazing

Gecko Glazing: secondary glazing for timber windows

Gecko Glazing is a British company specialising in patented secondary glazing panels, marketed as Gecko Panes. These panels are fitted inside existing sash and case timber window frames, with no need for drilling or additional hardware. The company states that its design fits 99% of this type of window and that the system is completely removable, making it suitable for listed or period properties.

How it works and performance

The product is based on a panel with a patented foam perimeter that press-fits into the frame. According to the company, this trapped air layer acts as insulation and reduces heat loss by up to 50%, noise by up to 25% and virtually eliminates condensation. Installation requires no special tools and can be completed in minutes, without damaging the original joinery. The company states that the system improves the property's Energy Performance Certificate (EPC) rating and helps reduce CO2 emissions.

Purchase and installation options

Gecko Glazing offers two routes: direct purchase for customer installation, with self-measurement using a laser device supplied by the company, or a professional service that includes a measurement visit and installation. The company recommends the professional survey for larger projects or when the customer is unsure. The first panel purchased in the DIY option comes with a money-back guarantee. The company states that it covers most of the UK and that orders are delivered within four weeks.

Manufacturing and guarantee

The panels are handmade in the UK and come with a ten-year guarantee. The company states it has over 3,000 satisfied customers and maintains a rating of 4.9 out of 5 based on 124 verified reviews on Trustpilot. Testimonials highlight improved thermal comfort, reduced condensation and external noise, as well as the service provided by the measurement and installation team.

Applications and audience

The product is aimed at homeowners with original timber windows, especially in historic or listed buildings where window replacement is not permitted. The company also offers information resources on how to measure, install, troubleshoot and improve insulation, as well as specific guidance for listed buildings.