Ratings may include incentivized customer reviews.
What Customers Are Saying
Customers overwhelmingly praise this backer rod for effectively preparing gaps before caulking, with most reporting it works exactly as intended. Reviewers consistently highlight that it fills gaps efficiently, reduces sealant usage, prevents mess, and creates durable seals around windows and doors. Many appreciate its ease of installation, flexibility, and ability to compress into tight spaces. Customers note it stops cold drafts and improves insulation. The material is described as high-quality and versatile across diverse applications. A few mention the diameter runs slightly smaller than expected, but this rarely impacts satisfaction. Overall, reviewers strongly recommend it as a reliable, cost-effective solution.
Customer review summary generated by AI, including incentivized reviews.No leaks
Would RecommendI needed this to help seal my bedroom window where ants, rain and cold air were entering. I got the smallest circumference 1/4 in. In the store, but I still had to cut it in half to compress it in the crevice. Good thing it was flexible. I then caulked over to seal it and make it weather resistant. I did this about two weeks ago and it is working just fine. No air, ants or rain leaks thru and it looks good.
It fit the bill
Would RecommendIt is good that the backer rod is waterproof for my application. The compression level was beneficial.
Works
Would RecommendUsed on large Crack, filled good finished with calk.
Verified Purchaser
Seals drafts
Would RecommendI bought this as seal between my house and my porch to keep drafts out of my enclosed porch. Works great
Definitely Flexible
Would Not RecommendThis was extremely flexible but did NOT stick well to wet concrete like it said it would. Since it didn’t stick I had to remove it so I do not know much more about it.
Verified Purchaser