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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, Live Comfortable: The Ultimate Gap Solution
- PRECISION GAP FILLER - Seals medium concrete gaps with exact 3/8 inch foam diameter for flawless caulking prep.
- EFFORTLESS CUSTOM FIT - Trim or twist the foam rod to perfectly match any joint size—no extra tools needed.
- ALL WEATHER DURABILITY - Crafted from premium weather-resistant materials to withstand rain, sun, and temperature swings.
- QUICK CLEAN INSTALLATION - Simply push into gaps and apply caulk—no messy adhesives or complicated steps.
- MULTI PURPOSE SEAL INSULATE - Ideal for expansion joints, draft-proofing, and crack filling—boost your home's comfort and energy efficiency.
The 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 concrete gaps and expansion joints. Its closed-cell, non-absorbent construction ensures durable, airtight seals for both indoor and outdoor applications, making it an essential caulk saver that enhances insulation, draft prevention, and long-lasting protection.
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 |
| Pattern | Solid |
| Shape | Round |
| 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. |
Have a Question? See What Others Asked
Reviews
S**.
Does the job!
Good products at good prices
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.
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.
M**N
Good product for driveway cracks. Description says pack of 2 but I only get 1.
It works and is useful. Again, I don't understand why it says pack of 2 when I only get 1.
M**A
Easy to use
Good material and not expensive 👍
T**E
Good product
Good product
J**
Some Grade A Backer Rod
Exactly what you would expect from backer rod. Consistent sizing throughout and an equal "squish factor" as well.
K**N
Very fast shipping, and was exactly as ordered.
Great product, made sealing our driveway a breeze!
Common Questions
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