Model # C21H

Internet #100067266

Store SKU #855668

Store SO SKU #1000667622

Frost King E/O 3/8 in. x 20 ft. Caulk Saver
0077578024288

Frost King

E/O 3/8 in. x 20 ft. Caulk Saver

  • Suitable for use with pavement,cracks,wall joints, foundations
  • Compatible with most caulks and sealants
  • Made of resilient, closed-cell poly foam for durability
$2.98 /each

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Product Overview

The Thermwell Products 3/8 in. x 20 ft. Caulk Saver helps insulate and cushion while reducing the amount of caulk needed to fill or seal large openings. Use to back fill large gaps before applying caulk (caulk sold separately). Helps insulate and cushion while reducing the amount of caulk needed to fill or seal large openings.

  • Suitable for use with pavement, cracks, wall joints and foundations
  • Compatible with most caulks and sealants
  • Made of resilient, closed-cell poly foam for durability
  • Saves money

Specifications

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Details

Warranty / Certifications

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Customer Questions & Answers

Need to fill 1/4" gap. Will 3/8" provide a tight fit so I can caulk over it?

Need to fill 1/4" gap. Will 3/8" provide a tight fit so I can caulk over it?
Asked by: JaneofallTrades
Yes. You can squeeze in
Answered by: Sebastian
Date published: 2017-03-20

How compressible; can it be used in a 1/8" control joint?

I need backer rod for a 1/8" saw-cut control joint in a concrete slab. This seems to be the smallest diameter sold by HomeDepot; is it intended to compress into a 1/8" joint?
Asked by: Bob
yes, you can squeeze it in, and shave off the extra.
Answered by: Sebastian
Date published: 2017-02-11

Can this be used on wood?

I need to seal the gaps on a basement staircase where the stair treads and risers aren't completely flush against the wall.
Asked by: newcaulker
Yes
Answered by: Sebastian
Date published: 2017-03-18

Can this be cut vertically to fit the space?

I have an uneven hole in my trim of the door that varies from 1/8 inch to 3/8 inch by 1/2 inch deep. Can I cut this down to get the appropriate fit for best adhesion of the caulk? Otherwise the backer will not be deep enough into the space and be more level with the trim opening.
Asked by: CC
It is very easy to use it. You can squeeze it in the slot, then shave it off with a sharp blade the way you want it, There is also a bigger size if you want. check it at https://goo.gl/ZxZI0O
Answered by: Sebastian
Date published: 2017-02-11
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Customer Reviews

E/O 3/8 in. x 20 ft. Caulk Saver is rated 5.0 out of 5 by 6.
Rated 5 out of 5 by from A very good filler for whatever project you have and think of. I have filled the space in between... A very good filler for whatever project you have and think of. I have filled the space in between the counter top and my range oven so that nothing will fall into the slot. It is also good for sealing the space when the window does not close tight and leaks air.
Date published: 2017-01-29
Rated 5 out of 5 by from Does what it claims. Great product for filling cracks between concrete pads and holding the caulk in place.
Date published: 2014-05-21
Rated 5 out of 5 by from Good buy I purchased this product to fill in larger gaps around my window siding before re-caulking and worked great and was easy to use. I just wish it was stocked at the store.
Date published: 2014-12-17
Rated 5 out of 5 by from Great for concrete joint resealing the product is as advertised and is very easy to install. I used it in my driveway joints with flexible caulk and was very pleased with the result
Date published: 2015-05-26
Rated 5 out of 5 by from Caulk saver This stuff rocks ice. It is great for making stefans. It does everything you need it to do.
Date published: 2009-12-28
Rated 5 out of 5 by from Works as described. Works as described, don't try to do the job with out this backer.
Date published: 2015-12-08
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