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
$ 3 86
store icon Loading Buying Options...
package icon Loading Buying Options...
Sorry, but we ran into issues loading these options. Please try refreshing.

Frequently Bought Together

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

You will need Adobe® Acrobat® Reader to view PDF documents. Download a free copy from the Adobe Web site.

Compare Similar

Compare Similar Products
Brand Frost King Frost King M-D Building Products M-D Building Products
Name 3/8 in. x 20 ft. Grey Poly Foam Caulk Saver 1/2 in. x 20 ft. Grey Poly Foam Caulk Saver Moisture Repellent 1/2 in. x 20 ft. Caulk Backer Rod 5/8 in. x 20 ft. Gray Caulk Backer Rod for Gaps and Joints
Price
$2.98
$3.48
$3.86
$3.97
Ratings (17) (8) (13) (19)
Builders Hardware Product Type Foam Tape Weatherstrip Foam Tape Foam Tape
Material Vinyl PVC Other Other
View Product View Product View Product View Product

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

Is it water proof

I want to use it between deck planks to keep water from coming through.
Asked by: Matt
Where will the moisture go, just sit on top and cause rot and mold as well as freezing problems. Use a under deck drain system. The product is closed cell so it will only retain a minute amount of fluid.
Answered by: Crazymark
Date published: 2018-10-30

Can this be trimmed to fit the space?

I have the 1/2 inch backer rod and it fills the gap but is flush with the trim rather then sitting under it.
Asked by: Cc
Yes...
Answered by: Crazymark
Date published: 2018-10-30

Can this be used with grout?

Can this be used with grout?
Asked by: bb
Why? Is tile that thick?
Answered by: Crazymark
Date published: 2019-01-07

Does Backer Rod have any acoustical value?

Does Backer Rod have any acoustical value?
Asked by: StoneRootsInc
Minimal.
Answered by: Crazymark
Date published: 2018-10-30
  • y_2019, m_3, d_16, h_21CST
  • bvseo_bulk, prod_bvqa, vn_bulk_2.0.11
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_16
  • loc_, sid_202066515, prod, sort_[SortEntry(order=NUM_ANSWERS, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING), SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING), SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING), SortEntry(order=BEST_ANSWER_FEEDBACK_COUNT, direction=DESCENDING), SortEntry(order=POSITIVE_ANSWER_FEEDBACK_COUNT, direction=DESCENDING), SortEntry(order=NUM_ANSWERS, direction=DESCENDING)]
  • clientName_homedepot
  • bvseo_sdk, java_sdk, bvseo-3.1.1
  • CLOUD, getContent, 58ms
  • QUESTIONS, PRODUCT

Customer Reviews

1/2 in. x 20 ft. Caulk Backer Rod is rated 4.8 out of 5 by 13.
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 4 out of 5 by from I had never used this product before. I was expecting the foam to be denser, and that the rod wou... I had never used this product before. I was expecting the foam to be denser, and that the rod would have a tacky exterior to better hold its shape and help it adhere to the crevice being filled. However, it did do the job it was intended to do.
Date published: 2018-07-03
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 Wish I would have know About this sooner So my husband put in our new baseboard and let’s just say you can tell it was a beginner who did it because there’s gaps everywhere! So I researched and found someone talking about this product. At first I got it and thought this is too big to use in the gaps I have, but then I thought I’ll just cut it to the shape I need, used a pen to stuff it in then filled with caulk over, worked great
Date published: 2018-04-24
  • y_2019, m_3, d_16, h_21
  • bvseo_bulk, prod_bvrr, vn_bulk_2.0.11
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_13
  • loc_, sid_202066515, prod, sort_[SortEntry(order=RELEVANCE, direction=DESCENDING)]
  • clientName_homedepot
  • bvseo_sdk, java_sdk, bvseo-3.1.1
  • CLOUD, getContent, 202ms
  • REVIEWS, PRODUCT