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film to glass compatibility - conservatory

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  • To avoid thermal breakage use only on externally facing glass if chart indicates (yes) as safe to use

Film-to-Glass compatibility guidelines

Solar control window films and some privacy window films work by reflecting, absorbing, transmitting and re-radiating solar energy. The way this is done can cause the glass to expand at a slightly greater rate than glass without film. With laminated glass, Georgian wired glass and some tinted glass this expansion can lead to thermal stress, under certain circumstances, that might cause the glass to fracture. It is therefore important to ensure compatibility by fitting the correct film to your particular glazing.

Follow the guidelines below to ensure a trouble free installation.

RS20 /RS35

 Clear S/G Clear D/G Tinted S/G Tinted D/G

Float/Annealed

yes yes no no

Toughened

 yes yes yes yes

Laminated

 yes no no no

Georgian Wired

 no no no no

Key: S/G = single glazed / D/G = double glazed
  • to avoid glass cracking due to differential of expansion film should completely cover the pane
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