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When you use Roto hardware, you know the maximum heights, widths and sash weights that are possible are market-leading. It is however important not to exceed any of these parameters in order to be sure your window is covered by the Roto warranty.

When you use Roto hardware, you know the maximum heights, widths and sash weights that are possible are market-leading. It is however important not to exceed any of these parameters in order to be sure your window is covered by the Roto warranty.

The official manual for each hardware system contains application diagrams to show which height and width combinations are possible at different weights of sash. In order to assess your window, you will obviously need to know your sash dimensions, including the rebate heights and widths. 

Other vital measurements include:

  • Deductible dimension of glass: this is the distance from the top of the Eurogroove to the edge of the glazing panel. There is a minimum size that must not be exceeded.
  • Profile weight: this is the weight per running metre of sash profile, including all reinforcement and glazing beads. There is a figure in kilograms per metre that must not be exceeded.
  • Panel weight: expressed in kilograms per square metre, this is the weight of the glass (or equivalent infill panel).

We publish a brochure that explains all of this in full, with examples of application diagrams and how to read them. With this information you can always be sure that you are interpreting the diagrams correctly. You can download a copy of this brochure below.

NOTE: if your window falls outside of the normal parameters, it might be possible to obtain an exceptional release for your project, but you will need full approval from Roto. See more in this article. 

Download the brochure

Get the official Roto publication ‘Notes on using and reading application diagrams’. Fill in your details here to download it.

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