Ratings may include incentivized customer reviews.
What Customers Are Saying
Customers overwhelmingly praise this backer rod for effectively filling gaps before caulking, with most reporting it saves sealant, creates professional-looking finishes, and improves insulation by blocking drafts. Reviewers consistently describe it as flexible, durable, and easy to cut, compress, and fit into tight spaces without special tools. Many highlight successful use around doors, windows, trim, flooring, and driveways. A few note the diameter may be slightly smaller than expected, though this rarely affects results. Overall, customers consider it an essential, reliable solution for quality caulking preparation.
Customer review summary generated by AI, including incentivized reviews.Seals drafts
Would RecommendI bought this as seal between my house and my porch to keep drafts out of my enclosed porch. Works great
Bought this a few weeks ago to fill a gap in baseboard moulding. Flexible, easy to insert and paint over. Would recommend this product.
good stuff
Would RecommendI utilize this on my concrete driveway where it had cracked ( 1" x3") . This helped me stretch out the filler and if the concrete shift any the foam will help out
Versatility of Backer Rod
Would RecommendNeeded "backer rod" (foam rope) to fill structural gap ~ in my case to minimize drafts/cold air. Various diameters and lengths available. In my case, the 3/8" was perfect and one gap needed about half the diameter - surprisingly enough it was easy to split!
Verified Purchaser