Best way to rainproof my polycarbonate roof?

havad

Newly installed Polycarbonate  (lexan thermal) roof.  Handyman installed using screws with silicone.  I have many leaks (rains for months here)....It was suggested to remove screws, put in more silicone, and put screws back in.  Online suggests a good tape (which is best?) or silicone.   Thanks

MitchellMc

Welcome to the Bunnings Workshop community @havad. It's brilliant to have you join us, and many thanks for your question about installing polycarbonate sheeting.

Requesting the installer to return and use the appropriate and specified sheet fittings in the approved fashion would be best. I can't imagine using standard screws and silicone is a method that is adequate or compiles with the warranty stipulations for the product.

Regarding specific information on this product and ways to resolve the situation, it would be best to contact the manufacturer and speak to them directly. They would be the best source of information about their product. I am unaware of the best method as it is not a product we stock. Our polycarbonate sheets require the use of specific screws designed for polycarbonate. They come pre-installed with a rubber dome washer that seals against the sheeting and prevents water from leaking through their holes.

If you want to go down the weatherproof tape path, we have Weatherproof Byute Flashing that could potentially be used. However, I recommend you check with the manufacturer of your roof sheeting to ensure compatibility.

Please let me know if you have any questions.

Mitchell