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🛠️ Seal smarter, not harder — the pro’s secret weapon!
The M-D Building Products Versatile Gray Foam Backer Rod is a 3/8-inch by 20-foot foam rod designed to fill and seal large concrete gaps, expansion joints, and cracks. Made in the USA, it provides a durable backing for caulking, preventing drafts and enhancing weatherproofing in driveways, sidewalks, and other construction projects.
| Asin | B000BQS90G |
| Best Sellers Rank | #446 in Hardware Sealers |
| Date First Available | 17 August 2012 |
| Department | Unisex-Adult |
| Is Discontinued By Manufacturer | No |
| Item Model Number | 71464 |
| Manufacturer | M-D Building Products |
| Product Dimensions | 35.56 x 20.32 x 5.08 cm; 17.01 g |
User
Great for posting my Dobermans ears thanks x
Great for posting my Dobermans ears thanks x
User
Good low cost back rod
Used this foam to seal up the concrete around my 4inch pipe for Radon System before I caulked. I stuffed this around the pipe to fill in the gap and then covered it all with high quality caulk to seal it up perfectly. It worked perfectly and is far cheaper than what i found at my Home Center. Make sure to purchase a thickness that is a little wider than your gap so it make a tight fit.
User
Very satisfactory
Good price for the quality of the product. Did the job.
User
Use THESE, not spray foam
Sometimes caulking or spray foam is not appropriate for the job, and is an excellent permanent base fix prior to caulking. Creates no pressure on door and window frames
User
Does what it was made for
Did exactly what it was designed to do.
Trustpilot
5 days ago
3 weeks ago