This greenhouse plastic is thick (duh).This product is intended to be placed on a greenhouse structure. It would have worked way better than it did for me if I had an actual greenhouse.I did some additional ‘framing’ against the back of my townhome and fence and stapled the hell out of it to the frame to create my own enclosure for my tropical plants. The plastic is strong but mother nature said the staples weren’t strong enough and started pulling them off. If the wind could get in, it would eventually rip it off. I switched to some scrap wood planks to screw down and hold the plastic. This worked relatively well but not perfect. I got some adhesive zippers (fancy) to make doors so I could enter and even roll up sections when it wasn’t cold (I’m in Texas so the weather changes all the time). Mother nature said the adhesive wasn’t strong enough and ripped a few of them open at 3am one cold morning. I ended up duct-taping my ‘doors’ shut.Because of my design, there wasn’t that much bracing over the entire span of the plastic roof. I thought it was pulled tightly enough so water wouldn’t pool on top but again mother nature said nope. Luckily I saw it as it was happening and was able to prevent roof failure. I didn’t want to, but I poked some holes in certain locations so it wouldn’t pool up anymore.This plastic (if installed correctly on a greenhouse frame) definitely keeps the heat in. There were cold days where I went in the greenhouse and it was warm. It traps in the daytime heat so as long as you’re not in and out releasing the heat, it will definitely keep your plants alive.My personal cons:Since I had my ‘greenhouse’ right outside of my bedroom, I heard EVERY time it rained, every time it was windy. I spent enough time looking out the window making sure it would hold up. Part of it was my fault in the design because I could only get the plastic so tight on my make-shift frame. If the wind gets in or gets a hold of the plastic, it will make noise until either you fix it or the wind eventually rips it off.The fact that pretty much all my plants that were in the greenhouse survived is testament to the plastic keeping heat inside.I’ll have to re-design my greenhouse or actually buy a decent frame, but I know this plastic does the job well.