Crawlspace-DIY Vapor Barrier Tape, 12 Mil Easy-to-Use Polyethylene Moisture Vapor Barrier Seam Tape for Crawl Space, Repairs, Underlayment, Waterproof, 4" x 180'

A really good tape, good adhesive and width. Easy to work with. worth a money. This tape works. I Did my whole crawlspace and I will recommend 10/10

This isn't just any tape. The quality is immediately noticeable – it's a premium polyethylene-backed tape with a strong, aggressive adhesive that bonds seamlessly to plastic sheeting. The 4-inch width effortlessly covers overlaps, for precise, mess-free application in tight spaces, creating waterproof joints that lock out moisture and air infiltration. Aesthetically, the white hue matched my plastic sheeting perfectly, creating seamless, professional-looking bonds that elevate the whole setup from DIY to polished. While it is too soon to speak about its durability, you can tell it's built to last a long time. This tape paired perfectly with the butyl tape from the same seller - two indispensable essentials that brought my DIY crawl space encapsulation project to a seamless finish.

3rd time buying a box of this tape over the past year. Tried a couple other brands that I returned and ultimately found this to be my go-to. Primarily used with vapor barrier but have grabbed for other needs and has held up excellent for all. Thick, stays stuck, water doesn't get in, just enough stretch if wrapping pipe to get a tight seal, etc. Definitely recommend.

The tape is as described and works as described. Really happy with adhesion and the edges made super easy for tearing with hands which makes work with it quicker to. Great product

It's pretty solid stuff. Would be nice if it had a slightly stronger adhesive, but I haven't found a tape where that was not the case. Overall, I would recommend it.

This tape is great. I have bought 5 rolls of this tape and it sticks to plastic excellent. It cuts easy with a knife or razor blade. Great for crawl spaces and high ceilings in pole barns where plastic needs to be secured. Great value for the money. I purchased a roll of white tape from another vendor and it would not stick to the plastic lime this one does so I returned it.

If there's a better tape out there for sealing vapor barrier seams, I would be extremely surprised! This stuff sticks, stays stuck, and makes your encapsulated vapor barrier project look gorgeous. And if you have some left over after your job is done, don't be afraid to use it for other projects as it sticks to nearly everything; I've even used it to patch blow up pool toys!

easy to use, wide tape, adheres well to drainage mat. I used this also to attach a vapor barrier to the wall before mechanically attaching insulation over top.

Sticks great