Review on Top-rated GEAR AID Seam Grip SIL Silicone Sealant: Perfect for Silnylon Tents and Tarps by Thomas Taylor

If there were better instructions on how to prepare and use it that would be nice. Not everyone uses YouTube, but they are a source of "how to" information. He has successfully waterproofed five tents for me, usually two tubes per tent. I only use my best tents in high traffic areas, but as they age they will stretch to the seams. I've been using this since my first PCT camping trip and none of my tents have leaked. I've tried this on my backpacks, it's useless to do what's on the inside to rub off the items inside, but it helps on the outside seams to slow the water. It is easier to use a rain cover, most backpacks are not made of waterproof material. Tents, tarpaulins and such are my favorite seals, there are always a couple of hoses hanging from them.