202-INST-US-001 v1.0
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11 Dec 2020
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Page 10 of 25
Preparation of the Roof
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Raised Installation
Typically for warm-roof construction
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the product will sit on a frame built up from the rafters.
Sales drawings:
Installation: 202-ASS-004
Fixing dimensions: 202-ASS-001
Figure C
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Example of raised installation
When preparing rafters, consider how the insulating sheathing and the ends of the battens will be supported at the jambs of the product.
Study the sales drawings of the Product carefully when designing the size of the aperture and spacers. Figure C is for illustrative purposes
only and may not be suitable for your installation.
These products can be very heavy. Glazing Vision strongly recommends that a structural engineer is consulted when
designing the structure(s) that will support the product and the surrounding roof. Nothing in this manual constitutes a
structural proposal.
Before continuing onto the installation instructions:
The raised frame that will support the product, and the surrounding rafters and horizontal trimmers, should be complete
and in place.
The insulating sheathing (the insulation installed outside the rafters) and the counter-battens of the surrounding roof
should be complete and in place.
The surrounding roof should not yet be felted or battened, this will be covered in the installation instructions.
Spacers added to raise
the product away from
the rafters
Product to sit on
face of spacers
