M-D Building ProductsVersatile Gray Foam Backer Rod - Essential Caulk Saver for Sealing Concrete Gaps, Expansion Joints, and Crack Filling, 3/8 by 20 Feet, (Pack of 2) (71464)
Description
🛠️ Seal smart, save energy, and upgrade your space effortlessly!
- PRECISION GAP FILLER - Snug 3/8 inch diameter seals medium gaps flawlessly
- EFFORTLESS CUSTOM FIT - Trim or twist to perfectly match any joint size—no extra tools needed
- VERSATILE APPLICATION - Ideal for concrete joints, window sills, doors, and even leaky roofs
- ALL WEATHER RESILIENCE - Built to withstand rain, sun, and temperature swings without losing integrity
- QUICK CLEAN INSTALLATION - Push in place and caulk over—no messy adhesives or complicated prep
M-D Building Products’ Versatile Gray Foam Backer Rod is a 3/8 inch diameter, 20-foot long, weather-resistant polyethylene foam designed to fill and seal medium gaps in concrete, expansion joints, and cracks. Its closed-cell, non-absorbent material ensures long-lasting durability indoors and outdoors, providing a reliable base for caulking that improves insulation, airtightness, and draft prevention with easy, tool-free installation.
Specifications
| Manufacturer | M-D Building Products |
| Part Number | 71464 |
| Item Weight | 0.6 ounces |
| Product Dimensions | 14 x 8 x 2 inches |
| Item model number | 71464 |
| Is Discontinued By Manufacturer | No |
| Size | 20 Ft. |
| Color | Black |
| Style | Backer Rod |
| Material | Rubber |
| Item Package Quantity | 1 |
| Number Of Pieces | 1 |
| Measurement System | US |
| Certification | Non-absorbent, closed-cell polyethylene pre-caulking material |
| Included Components | MD Building - 71464 - 2pk |
| Batteries Included? | No |
| Batteries Required? | No |
| Warranty Description | All M-D products are warranted to be free from defects in material and workmanship if installed and used in strict accordance with our installation instructions. Our liability is limited to our sale price of any products proved to be defective or, at our option, to the replacement of such products upon their return to us. |
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Reviews
K**.
Good product
Works well. I bought it to fill in gaps in my driveway. For the smaller cracks I cut the width of it. It is durable and a good price.
K**N
Very fast shipping, and was exactly as ordered.
Great product, made sealing our driveway a breeze!
A**Y
Perfect for diy floor installation
We used this when installing engineered hardwood in our home. Functional, easy to use, and a great value. Would recommend!
W**M
bill
nice
J**L
This rod has my back!
Does what any good backer rod would! Works great and gets the job done.
J**E
nic backer rod
A good filler for wider spaces between two panels that saves caullk/ adnesive/ sealiant. I am using this backer in some spaces between sheetrock and flooring to liquid proof them. Also good to keep critters out.
B**E
Great for threshold gaps
Had a small gap in my front door threshold after one of our animals ripped up the material that was originally in the gap.After reading many reviews for this product, gave it a shot. It was just what I needed! Super easy to use: measure, cut, install. Fits perfectly in the gap. No need to worry about dirt, bugs, and other debris getting in the gap.Great value too, as the 20ft bag was only about $3.00, with plenty left over if I need to replace it again.Highly recommend.
1**N
Stops Drafts
It's just a roll of foam, too limber for my application.
Common Questions
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