Acrylic Secondary Glazing Panels for Windows
Clear acrylic and polycarbonate secondary glazing panels cut to size for DIY window insulation, noise reduction and draught proofing in homes and rentals.
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Australia Wide
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Partner with Australia's leading acrylic fabrication experts. We provide end-to-end support from material selection to final delivery.
Material Consultation
Our engineers help you select the optimal grade for your specific environmental and aesthetic requirements.
CAD Support
Send us your designs in DXF, DWG, or PDF. We review every file for structural integrity and precision cutting paths.
Fast Quoting
Receive a comprehensive technical specification and competitive quote within 24 hours of your submission.
Recommended Materials
Selecting the right base material for this application.
What Secondary Glazing Does
Secondary glazing is a second clear panel fitted on the inside of an existing window. The still air trapped between the original glass and the new panel slows the heat escaping in winter and coming in during summer, cuts draughts from old timber sashes and reduces outside noise. It costs a fraction of replacing windows with double glazing, it keeps the original frames, and because the panels can be removed it suits renters and heritage homes. Perspex Online cuts secondary glazing panels from clear acrylic sheet to the exact size of each window.
Acrylic or Polycarbonate?
Clear acrylic is the usual choice. It is optically clearer than glass, half the weight and easy to keep clean, so the window looks the same once the panel is in. Polycarbonate is nearly unbreakable, so it suits ground-floor windows, kids' rooms and anywhere a panel may be knocked. For most homes 3mm acrylic is enough, with 4.5mm for windows larger than about 1200 x 1200mm so the panel stays flat.
Fixing Methods
- Magnetic strip: a steel strip on the window frame and a magnetic strip on the panel. The panel clicks on and off, which makes it the most popular DIY method and ideal for rentals.
- Channel or track: a slim U-channel around the reveal holds the panel, and sliding tracks let you open the window behind it.
- Screw-fixed: pre-drilled panels screwed to the frame with a foam seal, for windows that are never opened.
Measuring Your Windows
Measure the inside of the window reveal at the top, middle and bottom, and use the smallest width and height. For a magnetic system, the panel usually overlaps the frame by 10 to 20mm all round. For a channel, take 2 to 3mm off each way so the panel slides in. Number each window, as old houses rarely have two the same, and we label every panel to match.
Order Secondary Glazing Panels
Enter each window size in the pricing calculator for an instant price, or ask our CNC router team for rounded corners, finger pulls or pre-drilled holes. Panels ship Australia-wide with the protective film on.
Featured Products
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Acrylic Secondary Glazing Panels for Windows FAQ
Does secondary glazing really work?
What thickness acrylic do I need for secondary glazing?
Can renters use secondary glazing?
Acrylic or polycarbonate?
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