How to Install a Frameless Skylight - Skylights1

Through the years we have seen mistakes and poor practices in Skylight installations, which lead to many issues in the following months and years.
We feel obligated to share our experience and knowledge with you to avoid these issues. That’s why we have prepared a detailed “Step-by-Step Installation Guide” for a professional Skylight installation.
We can, and do guarantee the quality of the glazing unit itself, but we can’t take responsibility for the installation, it falls on the builder/fitter’s shoulders.
You are not required to fully comply with our guidance below, however, we recommend you to follow it as fully as possible.

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your vapour barrier isn't continuous, how do you prevent moisture from getting trapped on the on the inside of the upstand?