Choose a made-to-size acrylic secondary glazing kit for the inside of an existing window. The kit uses a 4mm clear acrylic panel, a coloured border and prepared magnetic fittings. Check the frame, available space and measuring instructions before ordering.

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Secondary Glazing

1 product

Secondary Glazing Acrylic Window Kit Calculate your price Choose size and options

Check your window before ordering

Measure each window separately and label the panel with its room reference. Check that the frame provides a suitable clean, dry surface for the adhesive strips, and allow for handles, openings and removing the panel.

The product instructions specify a 10mm fitting allowance. If you are unsure how to apply that allowance to your measurements, send a dimensioned photo or drawing before ordering; do not guess or deduct it twice.

What the kit includes

  • A 4mm clear acrylic panel cut to the ordered size.
  • A 25mm coloured border to cover the visible fitting area.
  • Pre-applied magnetic strips and prepared steel strips with adhesive backing.
  • A named cardboard sleeve for storing and protecting the panel.

Fitting and care

Check the panel and strip orientation before peeling the backing. Follow the product installation instructions, including surface preparation and the adhesive setting time. Remove the protective film after fitting. Clean with warm soapy water and a soft cloth; follow the acrylic care instructions.

Questions before ordering

Will every window perform the same way?
Results depend on the existing window, fit and installation. We do not specify a universal percentage saving, noise rating or guarantee that condensation will be eliminated.

Can I order a shaped panel or another colour?
Send your dimensions, quantity and a photo or drawing for a bespoke enquiry.

Where can I see the current price?
Use the secondary glazing kit product page for the dimensions and options you need.

Ask about measuring or a bespoke glazing kit