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1" Closed Cell Backer Rod/Crack Filler (25 ft)

4.7 4.7 out of 5 stars 1,069 ratings

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Purchase options and add-ons

Brand Armacell
Surface Recommendation Floor
Water Resistance Level Waterproof

About this item

  • Fill large cracks
  • Save caulk
  • Keep caulk from ripping loose
  • Fill large s
See more product details

Customer ratings by feature

Easy to use
4.8 4.8
Sturdiness
4.6 4.6
Durability
4.6 4.6
Value for money
4.6 4.6

Frequently bought together

$9.95 ($0.40/Foot)
Get it Apr 5 - 10
In Stock
Ships from and sold by Wholesale-Distribution.
+
$4.27
Get it as soon as Tuesday, Apr 2
In Stock
Ships from and sold by Amazon.com.
+
$11.59
In Stock
Ships from and sold by Conspec Materials, Inc..
Total price:
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Product information

Technical Details

Additional Information

Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.
Product Warranty: For warranty information about this product, please click here

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1"

1" Closed Cell Backer Rod/Crack Filler (25 ft)


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Product Description

Backer rod is important when sealing large gaps. It allows caulk to span a gap without ripping loose. In the example above backer rod is used where the radon pipe enters the floor before caulk is applied. 1" backer rod is perfect for filling gaps 3/4" to 1-1/8" wide. Sold in 25 foot lengths.

Compare with similar items

This Item
1" Closed Cell Backer Rod/Crack Filler (25 ft)
Armacell 1" Closed Cell Backer Rod/Crack Filler (25 ft)
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Price-10% $9.95
Typical:$11.00
$4.27-19% $17.31
List:$21.37
-63% $8.39
List:$22.98
$13.80$14.59
Delivery
Get it Apr 5 - 10
Get it as soon as Tuesday, Apr 2
Get it as soon as Tuesday, Apr 2
Get it as soon as Tuesday, Apr 2
Get it as soon as Wednesday, Apr 3
Get it as soon as Tuesday, Apr 2
Customer Ratings
Easy to use
4.8
4.8
4.2
4.2
4.7
Value for money
4.6
4.7
4.1
3.8
4.5
Adhesion
3.8
4.5
3.8
Sold By
Wholesale-Distribution
Amazon.com
Amazon.com
Amazon.com
Savvy Deal,LLC
Sandsa
form
Foam
Fl
Paste
Rod
surface suggestion
Floor
wall
concrete
water resistance
waterproof
waterproof
waterproof
waterproof
water resistant
waterproof
weight
0.02 pounds
2 pounds
10.1 ounces
0.8 ounces

Customer reviews

4.7 out of 5 stars
4.7 out of 5
1,069 global ratings

Customers say

Customers like the quality, performance, fit, ease of installation, and value of the caulk. They mention that it works great, is easy to install, and is good value for the money.

AI-generated from the text of customer reviews

30 customers mention27 positive3 negative

Customers are satisfied with the quality of the caulk. They mention that it is of excellent quality, with a good foam backer. Some say that it holds up through the winter and is good for filling cracks. Overall, customers are happy with their purchase and recommend it to others.

"perfect for my project. push it in the crack and then add poly leveler. done!" Read more

"Not much to say. Product is what it says it is. No defects. Shipped out quick...." Read more

"Everything to like. So easy to install under the siding. Easy to cut to different lengths with a utility knife." Read more

"great for concrete driveway repair before sealant..." Read more

18 customers mention18 positive0 negative

Customers are satisfied with the performance of the caulk. They mention that it works well for spacers, control joints, and filling gaps. Some say that it's easy to use and works well to smooth liquid cracks.

"Worked great for filling large gaps before applying foam" Read more

"Worked great thank you" Read more

"Works just like you would expect." Read more

"Works great!" Read more

10 customers mention10 positive0 negative

Customers are satisfied with the fit of the caulk. They mention that it fits perfectly according to measurements, is firm but flexible enough to fit into gaps, and is the exact length. Some say that the length was perfect for a three car garage and that they even had about a left over.

"...This fit perfectly. Problem solved!" Read more

"Firm foam, but can be formed to fit into gap." Read more

"...It filled my space between the garage and driveway. The length was perfect for 3 car garage I even had about a left over." Read more

"...It fit perfectly according to measurements. I highly recommend it" Read more

8 customers mention8 positive0 negative

Customers find the installation of the caulk to be easy. They mention that it is easy to use, press in place, and cut smaller or thinner if needed.

"Everything to like. So easy to install under the siding. Easy to cut to different lengths with a utility knife." Read more

"Easy to use, used it to fill the depth in spacing of driveway before we caulked it." Read more

"Easy install. Easy cut. Will use again." Read more

"...Easy to press in place, or cut smaller/thinner if needed...." Read more

6 customers mention6 positive0 negative

Customers appreciate the value of the caulk. They say it provides better quality for the money than expected.

"great price. great quality." Read more

"It was good to find this at an acceptable price, though the price was kinda high...." Read more

"...what I expected size and style of foam wise and better quality for the money than expected...." Read more

"Good value..." Read more

I used it to fill the empty void in the garage door gasket.
5 Stars
I used it to fill the empty void in the garage door gasket.
I used the backer rod to fill the empty void in the garage door gasket. I'm not sure why manufacturers use these lame gaskets that flatten out immediately? I replace the backer rod every few years.
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Reviewed in the United States on January 9, 2024
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Reviewed in the United States on January 15, 2024
Reviewed in the United States on March 2, 2024
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5.0 out of 5 stars I used it to fill the empty void in the garage door gasket.
Reviewed in the United States on March 2, 2024
I used the backer rod to fill the empty void in the garage door gasket. I'm not sure why manufacturers use these lame gaskets that flatten out immediately? I replace the backer rod every few years.
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Reviewed in the United States on February 20, 2024