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.Gap filler
Would RecommendI bought this to use when caulking a large gap. I works just fine as long as you have adequate space to apply enough caulk.
Worked!
Would RecommendWorked as it was supposed to.
Verified Purchaser
Easy to cut and squeeze into place.
Would RecommendI used this for a gap along my roofline. It allowed me to squeeze it into place and put caulk around it. Supposedly it is closed cell so it should also help seal it up. It is super easy to cut and has good flexibility.
This product was not needed. For our floor installation,
Verified Purchaser
Good backer rod
Would RecommendIt is good backer rod. No problems with it and it is easy to work with. Compresses in tighter gaps and caulk adheres well to it.
Good product
Would RecommendFound the product useful to fill large gaps in siding