I just used a few gobs of this sealant to repair my Platypus hydration bladder that was delaminating after 5years of fairly frequent year round use. I got a return autborization from Cascade Designs to sent it to Seattle for repair but decided to save $ by not blowing it on shipping, opting to go the DIY route on the repair instead. Now I have nearly a whole tube left which I'll use to seal seams on my MSR Hubba Hubba that's been loved to death since 2003. This stuff is not very thick...pretty runny, but just thick enough to work with if you're careful and don't try to apply too much at once. I recommend it if you need to do similar repairs. Happy Hiking & Camping, Friends! Fix your gear and get the heck out there already! ;0)I have yet to use my tent in wet weather but the seam sealing went fairly well. I followed advice online and cut it with a 2:1 ratio of sealant to mineral spirits. Otherwise you will have a difficult time efficiently applying a very thick, viscous fluid to your tent. Next time I might even go with a 50:50 ratio of sealant to mineral spirits as it still seemed a bit sticky and hard to apply neatly. Took about two days to fully cure out. Adheres well to a Silnylon tent.The best, easiest seam sealer solution for silicon treated fabric. I've tried Coughlin's seam sealer, but it is water-based and ineffective for material such as silpoly or silnylon. I've tried homemade seam sealer from mixing100% silicon mixed with mineral spirits - can be effective in the right proportions, but messy and really only worth it for large seam sealing jobs. For smaller jobs, this is perfect.Anyone using Seam Grip Sil is ready to use as is (does not need to be thinned) but does require careful application and the end result will be noticeable... does anyone really expect a tent to stay looking pristine? I'd much rather have a tent with obvious seam sealing that is waterproof than one that looks perfect and leaks. For applying, do NOT simply squeeze the contents of the tube onto the tent/tarp. Instead apply a small amount of the sealer to the brush and then use the brush on the target area and patiently repeat until the entire seam has been covered. Another tip is to pour a bit of sealer into a small water/soda bottle cap and use that as a mini 'paint bucket' to prevent spills from the tube.I'm purchasing this for a second time. First time, I went to a festival with about a 15 person group for a weekend. It ended up raining about 2 of 3 days and my tent ended up being the only one not flooded! One 1.5oz tube for a "2" person-tent. It felt good being prepared & sleeping on a mattress vs a car or flooded tent! My friend had tried some spray-on waterproofing & it failed. As well as other friends who had rain flies & whatnot. Now, going out again as a couple's trip & am confident we will be ready for a dry weekend no matter what : ) 2 tubes for this "4" person. I let it dry out for a day in the yard before repacking it for trip. It took maybe an hour+ to apply for a 2-person & am expecting the same for this 4-person with both of us working, but it's worth the time 100%If there were better instructions on how to prepare and apply it would be nice. Not everyone uses YouTube but source for the "how to" information. It has successfully waterproofed five tents for me, it normally takes two tubes per tent. My better tents I use just on high stress points but as they age will apply to all seams. I've used this since my first PCT hike and non of my tents have had a leak. I have tried it on my packs, no use doing inside rubs off on items inside but helps on outer seams to slow down water. Easier to use a pack rain cover, most packs aren't made of waterproof material. Tents, tarps and such this is my go-to sealer always have a few tubes hanging around.I used this to seal up my cheap tent that had a few leaks. It was easy to use and was plenty to do the whole 2 man tent and had some left over. I put it on a little heavier than the instructions said. Feels rubbery when dry. No leaks so far.We put this on the seams of our 10x10' pop-up canopy, that have leaked in the past, using the enclosed disposable brush. True to form, we had rain and there were no leaks. And that was after we had folded the canopy multiple times and stored it in the transport bag.Got this to seam seal a new Napier minivan tent for my Honda Element. I must agree with what other sellers are saying about it's application - quite messy. It's just a bit too thick to spread quickly and smoothly. I dropped the little brush about half way through and had to finish applying with my finger, which was easier if not messier. Also, I'm not so sure it goes as far as the makers claim. I used almost the entire tube on my small tent, which is really more like a canopy for the back of an SUV. I let it dry for 24 hours and the product was still slightly tacky. A little talcum powder worked great.I didn't get any rain on my trip (good for the trip, bad for this review). But, I do plan on using this same product on my next tent as it's the best value and gets good reviews.This is my first time using this product, so far not good I repaired my car roof bag and my tent bag which is of a lighter material than the roof bag . the tent bag rip came apart with the silghtest pressure. it does form a good seal water repllent wise but I am going to reinforce the joint with extra material glued on the inside of the bagThis is not a permanent fix. This is difficult to apply to seems and when use for patches they simply fall out. Yes, I followed the instructions and doubled the cure time and the surfaces were clean.Do you have a beautiful new & expensive tent? Do you think you're pretty good with your hands? Well look no further! This is THE quickest way to ruin all of that, and make you regret all your life choices. Put plainly: this sticky, drippy, nasty goop is impossible to deal with in a controlled manner. It will most definitely make your gorgeous new tent look like picasso puked on it. You will have blobs, drips, erratic swipes and about 50 paper towels covered in the stuff. You will be cursing yourself, your tent, and this product with every renewed effort to apply it neatly. In the end you will hate it - and be humiliated by the results. I imagine it is actually waterproof (yay!) but it is the worst way I know of to achieve a result. Believe me, I took my time! Conditions were ideal! It's just not made for mere mortals. You might as well spray paint some graffiti on it too... it can't make it look any worse.very happy with silinet silicone seam sealer done my job a %100Diesen Seam Seal Dichtstoff habe ich bei meinem 3F UL Lanshan 2 Pro Zelt angewendet. Eine Spritze wurde mit dem Zelt mitgeliefert. Mit dieser und dem beigefügten Pinsel lässt sich der Seam Sealer prima auf die Zeltnähte auftragen (eine ruhige Hand vorausgesetzt). Ich habe das bei 32 °C am aufgebauten Zelt gemacht und es sind keine "Rotznasen" entstanden, wenn man die aufgetragene Raupe zügig mit dem Pinsel verstreicht.Der Sealer bleibt nach dem Trocknen (3 - 5 Std.) dauerelastisch und er glänzt ein wenig. Ich habe die Dichtigkeit des Zeltes bei einem mehrstündigen Regen testen "dürfen". Es blieb wirklich dicht!Fazit: Leicht aufzutragen und perfekte Dichtwirkung (wenn man sauber arbeitet). Die Menge reicht für das o.g. Zelt locker aus. Ich habe noch fast die Hälfte der Tube übrig für eventuelle Nacharbeit.Also - klare Kaufempfehlung, auch wenn das Zeug ziemlich teuer ist!