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🛡️ Seal smart, save more — the ultimate caulk saver for pros and DIYers alike!
The M-D Building Products Versatile Gray Foam Backer Rod is a 3/8 inch diameter, 20-foot long foam rod designed to fill medium gaps in concrete, expansion joints, and cracks. Made from durable, weather-resistant rubber foam, it provides a reliable base for caulking, enhances insulation, and prevents drafts both indoors and outdoors. Easy to install and trim, this waterproof backer rod is a must-have for professional-grade sealing and energy efficiency.
| ASIN | B000BQS90G |
| Best Sellers Rank | #92,765 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #6 in Rope Caulk #255 in Industrial Sealants #20,145 in Hardware |
| Brand | M-D Building Products |
| Brand Name | M-D Building Products |
| Color | Gray |
| Customer Reviews | 4.6 out of 5 stars 1,647 Reviews |
| Global Trade Identification Number | 00043374714647 |
| Included Components | MD Building - 71464 - 2pk |
| Item Form | Foam |
| Item Type Name | MD Building - 71464 - 2pk |
| Item Weight | 0.6 Ounces |
| Manufacturer | M-D Building Products |
| Material Type | Rubber |
| Model | 71464 |
| Number of Items | 1 |
| Part Number | 71464 |
| Surface Recommendation | surface_recommendation |
| UPC | 043374714647 |
| Unit Count | 1.0 Count |
| 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. |
| Water Resistance Level | Waterproof |
U**T
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.
M**N
Works well for insulation also
Stuffs easily into door and window cracks to provide insulation in irregular sized gaps. And works well as intended caulk saver for large cracks.
J**J
Works great
Covered pipes when the weather is cold below freezing . It stays on winter , spring, summer and fall .
R**S
Good product
Exactly what I expected and needed. Solid and held up well.
B**I
Exactly what I needed
Worked perfectly for the gap between the stair siding and wall letting up cold air. No more draft! Sturdy material and comes in one long piece so you can cut to size. Decent price
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.
A**E
good product
worked perfectly
D**I
Works like a charm
Made up 20F difference before and after. I inserted this into a narrow gap between baseboard and floor. Wish I could've got 0.5', but a couple of go for this worked perfectly as well.
B**S
Great for posting my Dobermans ears thanks x
Great for posting my Dobermans ears thanks x
P**S
Very satisfactory
Good price for the quality of the product. Did the job.
M**Y
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
A**W
Does what it was made for
Did exactly what it was designed to do.
D**N
Golf Club Mods
Use in conjunction with hollow plastic rods (from Amazon) and lead tape to make shaft heavier after club assembly.
Trustpilot
2 weeks ago
2 weeks ago