I posted this in another thread, but now that I have tried it I want to start its own thread. It describes mixing pure silicon caulking with Naphtha to make a liquid waterproofing that can be applied to sheets, and presumably other fabrics to make them waterproof. I tried it and it seems to work. I put it over a part of my stacks, and after a good rain it is dry underneath, and it holds water as you can se from the second pic.
![[Hearth.com] Waterproofing sheets [Hearth.com] Waterproofing sheets](https://www.hearth.com/talk/data/attachments/314/314663-0e4e03185704b369eea0c2966b62d6d1.jpg?hash=E8v0D-vGiJ)
![[Hearth.com] Waterproofing sheets [Hearth.com] Waterproofing sheets](https://www.hearth.com/talk/data/attachments/314/314662-7edad49daf53c75355be19a88d3322ab.jpg?hash=VSx6ItNYXO)
![[Hearth.com] Waterproofing sheets [Hearth.com] Waterproofing sheets](https://www.hearth.com/talk/data/attachments/314/314663-0e4e03185704b369eea0c2966b62d6d1.jpg?hash=E8v0D-vGiJ)