Model # 71480

Internet #202066515

Store SKU #462440

M-D Building Products 1/2 in. x 20 ft. Caulk Backer Rod
0043374714807

M-D Building Products

1/2 in. x 20 ft. Caulk Backer Rod

  • Fills large gaps and openings
  • Provides a sound surface for caulking projects
  • For use in expansion joints in driveways and sidewalks
$348 /each
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Frequently Bought Together

Product Overview

  • Fills large gaps and openings
  • Provides a sound surface for caulking projects
  • For use in expansion joints in driveways and sidewalks
Before caulking, use the MD Building Products 1/2 in. x 20 ft. Caulk Backer Rod to help fill gaps and openings in pavement cracks, wall joints, foundations, sidewalks and driveways. The backer rod helps cushion and insulate and helps prevent 3-point bonding.
  • Fills gaps and openings in pavement cracks, wall joints, foundations, sidewalks and driveways
  • Non-absorbent, closed-cell polyethylene pre-caulking material
  • Twist multiple strands together to fill large cracks, gaps
  • Gray finish

Product Overview

  • Fills large gaps and openings
  • Provides a sound surface for caulking projects
  • For use in expansion joints in driveways and sidewalks
Model #: 71480
Sku #: 462440
Internet #: 202066515

Before caulking, use the MD Building Products 1/2 in. x 20 ft. Caulk Backer Rod to help fill gaps and openings in pavement cracks, wall joints, foundations, sidewalks and driveways. The backer rod helps cushion and insulate and helps prevent 3-point bonding.

  • Fills gaps and openings in pavement cracks, wall joints, foundations, sidewalks and driveways
  • Non-absorbent, closed-cell polyethylene pre-caulking material
  • Twist multiple strands together to fill large cracks, gaps
  • Gray finish

Info & Guides

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Specifications

Dimensions

Product Depth (in.)
2
Product Height (in.)
0.5
Product Width (in.)
0.5 in
Unspooled Length (ft.)
20.0

Details

Builders Hardware Product Type
Foam Tape
Color Family
Grays
Color/Finish
Gray
Density
15.0
Material
Other
Returnable
90-Day

Warranty / Certifications

Manufacturer Warranty
No

Specifications

Dimensions

Product Depth (in.)
2
Product Height (in.)
0.5
Product Width (in.)
0.5 in
Unspooled Length (ft.)
20.0

Details

Builders Hardware Product Type
Foam Tape
Color Family
Grays
Color/Finish
Gray
Density
15.0
Material
Other
Returnable
90-Day

Warranty / Certifications

Manufacturer Warranty
No

Questions & Answers

Can this be used with grout?

Can this be used with grout?
Asked by: bb
Thank you for your question! Yes, you can put grout over the backer rod.
Answered by: MDBuildingProductsSupport
Date published: 2017-11-07

Is there a glue that will stick to this?

Asked by: Ddddddean
Thank you for your question! Any adhesive that can stick to PVC will stick to this backer rod.
Answered by: MDBuildingProductsSupport
Date published: 2017-10-31

I see in another question asked that this product is not mold resistant if used in a shower. With...

I see in another question asked that this product is not mold resistant if used in a shower. With silicone caulk applied over the backer rod is it appropriate to use this product to take up space in a ~3/8" wall/flooring shower tile joint? Previous owners used sanded grout, which has cracks and gaps. Backer rod seems better option than large amounts of caulk. Thank you.
Asked by: hillcountry
Thank you for your question. Yes, this product can be used in a shower with a silicone caulk.
Answered by: MDBuildingProductsSupport
Date published: 2017-12-13

Does Backer Rod have any acoustical value?

Does Backer Rod have any acoustical value?
Asked by: StoneRootsInc
Thank you for your question! No, the backer rod is merely intended as a gap filler for caulking.
Answered by: MDBuildingProductsSupport
Date published: 2017-06-16
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Customer Reviews

1/2 in. x 20 ft. Caulk Backer Rod is rated 5.0 out of 5 by 8.
Rated 5 out of 5 by from Used it to seal corner and siding mating edge , seals yet allows flex in vinyl siding. Used it to seal corner and siding mating edge , seals yet allows flex in vinyl siding.
Date published: 2017-11-21
Rated 5 out of 5 by from Easy to use, doesn't tear Had to use to fill large gap between driveway and foundation. In some places, had to twist larger sizes of backer rod to fill gap so the sealant will adhere only to the sides and not the bottom of the gap. This keeps it 'floating' as the gap expands and contracts. This backer rod is easy to twist and keep twisted, returns to its shape when untwisted, is easy to knot or fold, and to compress into appropriate sizes and shapes to fill all sorts of odd sizes of gaps.
Date published: 2012-09-28
Rated 5 out of 5 by from Great Concept for Caulk Backer The Caulk Backer rod filled the gaps and minimized the need for gobs of caulk. This product wedged into the crack very well and I applied the caulk over top of this product. The results were superb.
Date published: 2015-09-08
Rated 5 out of 5 by from Good buy I used this product to fill in gaps around window siding before re-caulking and it worked well. I just wish it was stocked at the store.
Date published: 2014-12-17
Rated 5 out of 5 by from Great for stefens I bought this fbr for homade nerf darts works great!!!
Date published: 2016-02-21
Rated 5 out of 5 by from Just what I expected I am not using this product for its intended use. I am a quilter and cut it up to replace the very costly Pinmoors used in quilt layering.
Date published: 2016-02-10
Rated 5 out of 5 by from Great Stuff Used backer rod on a new door I was putting. Was easy to use and worked great on filling in between the frame and wall. Save much on caulk too!
Date published: 2016-08-30
Rated 5 out of 5 by from exactly what i needed
Date published: 2011-05-02
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