The 4mm Flexible Secondary Glazing Kit is a complete DIY secondary glazing solution designed for use with 4mm glazing sheet, helping to improve thermal insulation, reduce draughts, minimise condensation, and reduce external noise. Ideal for enhancing the performance of existing windows without replacing them, this kit provides a neat, professional finish for homes, offices, listed buildings, and conservation properties.

Each kit includes 15 metres of flexible edging specifically designed for 4mm glazing sheet, together with turnbuttons, fixing screws, and a mitre gauge for creating precise 45° corner joints. Designed for use with the Clipglaze secondary glazing system, the flexible edging is quick to install and easily follows straight runs and gentle curves, ensuring a secure and reliable fit.

Manufactured from high-quality, durable materials, the 4mm Flexible Secondary Glazing Kit is suitable for both DIY enthusiasts and professional installers. Compatible with 4mm acrylic and other suitable glazing sheets, it provides a robust, long-lasting solution for improving energy efficiency, reducing heat loss, increasing acoustic insulation, and enhancing comfort throughout the year. Additional sizes, accessories, and colour options are available to suit a wide range of secondary glazing projects.