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Questions and Answers for Frost King 0.375 in x 20 in. Grey Poly Foam Tape Weatherstrip Caulk Saver

Internet #100067266

Model #C21H

Store SKU #855668

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

Questions & Answers

23Questions
caret
Q:Can this be used to fill deep brick mortar joints and then caulked
by|Mar 9, 2019
5 Answers
Answer This Question

A:  Yes

by|May 4, 2022
1 found this answer helpful

A:  Yes you can use this to fill cracks behind mortar joints. It will work just fine.

by|Mar 12, 2019

    A:  I would not recommend that, mortar should be used for mortar joints. You can then seal the brick with a masonry sealant.

    by|Feb 15, 2023
      1 found this answer helpful

      A:  I don't know any reason why it would not work.

      by|Mar 12, 2019

        A:  Sorry for the late response. Hope you had success. I believe it can. I used it to fill the gaps between my exterior walls and the slab on the inside of the house (poorly constructed semi tract home.) I then used acrylic caulking to seal it in. It is quite sturdy.

        by|Dec 18, 2023
          2 found this answer helpful
          caret
          Q:Will this mold at all?
          by|Nov 19, 2018
          4 Answers
          Answer This Question

          A:  Yes, mold can grow on just about anything eventually

          by|Oct 30, 2019

          A:  There is a possibility that it could hold mold since it can hold water.

          by|Nov 20, 2018

            A:  It states "moisture repellent". I guess it depends if the area could get a lot of water regularly and is not in a heated space.

            by|Nov 26, 2018

              A:  Yes...but it cleaned up easily with no damage with a power washer

              by|Nov 23, 2018
                caret
                Q:Can this be used for filling expansion gaps on driveways?
                by|Jul 23, 2018
                6 Answers
                Answer This Question

                A:  Yes I bought last fall, for gaps in my driveway some came up and have to redo it. not that good.

                by|Jan 14, 2023
                  1 found this answer helpful

                  A:  No, too soft, foam cell type material. Will break down fast.

                  by|Jan 14, 2023
                    1 found this answer helpful

                    A:  You would have to use a sealant on top of it. This is just a space filler. I used the pool crack sealant on top of the filler

                    by|Jan 14, 2023
                      2 found this answer helpful

                      A:  Yes it can.

                      by|Jan 31, 2020
                        1 found this answer helpful

                        A:  Yes, this can be used for filling expansion gaps on driveways.

                        by|Aug 17, 2020

                          A:  Yes, but a sealer needs to be placed on top

                          by|Aug 17, 2020
                          1 found this answer helpful
                          caret
                          Q:can this be used around outside wiring. Need to fill a gap where a floodlight was replaced with a led floodlight.
                          by|Feb 4, 2018
                          3 Answers
                          Answer This Question

                          A:  Yes it's similar to the foam that comes with outdoor lighting. 3/8th inch is pretty thick so make sure it's what you need.

                          by|May 5, 2023

                          A:  The caulk saver can be used outside to fill small gaps and openings before you apply caulk to seal.

                          by|Nov 26, 2018

                            A:  yes

                            by|May 5, 2023
                            caret
                            Q:Can I use this product to fill an expansion joint with a 1/2" opening & about 1 1/2" depth around the outer perimeter of our pool, in which we also have to fill the top 1/2" of the opening with Deck O'Seal? Do you think we may need to put 2 layers of the 3/8" Caulk Saver to fill about 1" depth of the opening, before filling the top 1/2" with Deck O'Seal? Thank you.
                            by|Nov 11, 2017
                            5 Answers
                            Answer This Question

                            A:  No, this is not recommended for that use.

                            by|May 5, 2023

                            A:  Yes but you may need a bigger size and it should not be seen, cover it with somthing to protect it.

                            by|May 5, 2023

                              A:  The caulk is really for small gaps and openings in expansion joints. You may have too large an opening. I have seen 5/8" caulk saver.

                              by|Nov 26, 2018

                                A:  I used it to fill concrete driveway and sidewalk compression joints. I used a flat head screwdriver to press it snuggly into the joint to an acceptable depth, significantly reducing the amount of caulk needed to fill the joint.

                                by|Oct 11, 2018

                                  A:  Usually gaps are not consistently the same size, so I've noticed that I need maybe a 3/8th and a 1/2 inch caulk saver. I stuff one or both as best I can then use a caulk or deck o seal.

                                  by|Nov 11, 2017
                                  1 found this answer helpful
                                  caret
                                  Q:I'm installing my outlast laminate flooring and they told me i needed this where do i use this?
                                  by|May 18, 2017
                                  5 Answers
                                  Answer This Question

                                  A:  Pergo outlast states to use” 3/8” OD PE foam” between the floor and the wall and on both sides of ant T joints. Outlast is “spillproof” so this foam should stop fluid from getting under the floor. Also you are instructed to seal the perimeter with 100% silicone sealer under any new kick boards, and at door jams to complete the installation. Funny pergo has none for sale on there web site.

                                  by|May 5, 2023
                                    2 found this answer helpful

                                    A:  It's used to fill gaps. Perhaps you need it at the very edge of your flooring against the wall so the baseboard will be flush with the flooring?

                                    by|May 4, 2023
                                    1 found this answer helpful

                                    A:  This is not used for any flooring applications that we are aware of.

                                    by|Jul 17, 2020
                                      1 found this answer helpful

                                      A:  Pergo outlast is “spillproff” they recommend a “3/8” PE foam” surrounding The perimeter of the floor between the wall and the floor. Then seal it, on top of the foam, with 100% silicone.. the foam and silicone should be used at all transitions as well. Any cut in at door jams only the silicone is advised unless you’re u can fit the foam in the space. The warranty is void without this treatment

                                      by|May 5, 2023
                                        2 found this answer helpful

                                        A:  You will be leaving a space between the wall and the flooring to allow expansion of the laminate flooring. It is in this space where the caulk saver will go and then caulk on the top of the caulk saver. Caulk allows the flooring to expand and keep out any water that gets left on the flooring. For example, wet boots, pets accidents. Used all around the room perimeter.

                                        by|Jan 28, 2023
                                          2 found this answer helpful
                                          caret
                                          Q:Need to fill 1/4" gap. Will 3/8" provide a tight fit so I can caulk over it?
                                          by|Mar 16, 2017
                                          4 Answers
                                          Answer This Question

                                          A:  Most certainly. You may need a sharp tool to shove it in there with

                                          by|Oct 30, 2019

                                          A:  Yes you can Chaucer over it. Choose the appropriate caulk for the application at hand and make sure it is comparable with the foam type

                                          by|May 5, 2023

                                            A:  Yes this should work just fine.

                                            by|May 4, 2023
                                              1 found this answer helpful

                                              A:  Yes. You can squeeze in

                                              by|May 4, 2023
                                              1 found this answer helpful
                                              caret
                                              Q:If I use this backer rod for a shower caulking, after caulking cured, water get in behind the caulking and the rod is soaked in constant water, what will happen to the rod? Will this affect the caulking?
                                              by|Jan 18, 2017
                                              3 Answers
                                              Answer This Question

                                              A:  I would be more concerned that water is getting beneath the caulk. This could cause destructive water damage. Make sure the backer rod fits tightly in the gap and make doubly sure your caulk completely seals the gap.

                                              by|Sep 7, 2019

                                              A:  It could cause mold growth being constantly water soaked.

                                              by|May 4, 2023

                                                A:  The rod will get moldy over time but if the caulk seal is good, water will not get behind it

                                                by|Oct 30, 2019
                                                caret
                                                Q:Is it water resistant? Can I use it for shower caulking? The gas is between the tile wall and shower pan and there might be constant water there.
                                                by|Jan 17, 2017
                                                3 Answers
                                                Answer This Question

                                                A:  This is to be used to fill in behind caulk to save on the amount of caulking used. It is not water proof.

                                                by|May 4, 2023

                                                  A:  Yes, it just needs to be caulked over well

                                                  by|Oct 30, 2019

                                                  A:  yes, but you do have to caulk over it, which will be the real water proof/resistant material. If you're using it for something that you won't caulk, then the caulk saver may be water resistant, but water will still get past it.

                                                  by|Oct 11, 2017
                                                  caret
                                                  Q:I caulked once before but it started leaking again. Gaps are about 3/8", do I need caulk saver to make it stop leaking for good?
                                                  by|Oct 9, 2016
                                                  2 Answers
                                                  Answer This Question

                                                  A:  You probably have a laminate countertop. There may be a crack or problem area which is why you have a 3/8 inch gap. The sink should be wider than the sink opening, so there is no gap You can try this caulk saver and then use a good caulk, but the counter seems to be the problem. That's a pretty wide gap around the sink. For a permanent solution, you may need a new countertop or sink. If your sink base can take it, maybe go one sink size up. Someone would need to cut the sink wider

                                                  by|Nov 11, 2017

                                                  A:  Do not know if this will work for this. We have never tested for use around sinks.

                                                  by|May 4, 2023

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                                                    Unspooled Length (ft.)

                                                    20

                                                    3.5

                                                    17

                                                    20