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Internet # 309830426

Model # KBKIT

Store SKU # 1004404771

Kerdi-Board-Kit Wall Surround Waterproofing Kit

$697.13
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  • Waterproof the walls around bathtubs and acrylic shower bases
  • Installs direct to studs eliminating drywall and cement board
  • Kerdi-Board panels cover 101 sq. ft.
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Product Details

About This Product

The Kerdi-Board-Kit contains the components needed to waterproof the walls for tile applications around a bathtub or acrylic shower base. The 1/2 in. thick Kerdi-Board panels are applied directly to the stud framing eliminating the need for gypsum or cement board. The kit includes Kerdi-Board panels, Kerdi waterproofing band, pipe seal, mixing valve seal, screws and washers, and Kerdi-Fix sealant.

Highlights

  • Create a fully waterproof and vapor-tight enclosure for tiled bathtub and acrylic shower base surrounds
  • Covers up to 101 sq. ft. of wall area
  • Kerdi-Board panels are applied directly to stud framing
  • Eliminates need for cement board or gypsum wall backer
  • Quick and easy to install
  • Kit includes: 8-1/2 in. x 48 in. x 38 in. Kerdi-Board panels, 2 pipe seals, 1 mixing valve seal, 1 - 5 in. x 98 ft. 5 in. Kerdi-Band, 140 screws and washers, and 2 tubes of bright white Kerdi-Fix
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Product Information

Internet # 309830426

Model # KBKIT

Store SKU # 1004404771

Specifications

Product Width (in.): 38 in

Dimensions

Product Width (in.)

38 in

Details

Color Family

Orange

Flooring Product Type

Accessory

Flooring Type

Ceramic, Porcelain, Stone, Tile

Material

Polystyrene

Pack Size

1

Returnable

90-Day

Warranty / Certifications

Manufacturer Warranty

10 Year Limited Warranty

Questions & Answers

No thinset included? Can you suggest type?
ByFeb 27, 2026
1 Answer | 
Answer This Question

The thin set is not included with the KBKIT. You can use the Schluter ALL-SET thin set, or you are able to use other thin set options. I have included the link the Shower Installation Handbook, this will go over the other thin set options. Link https://assets.schluter.com/asset/570120892212/document_i2tt9fh4sp2n562jmirhppbv4o/shower-system-installation-handbook.pdf?content-disposition=inline

By|Feb 27, 2026


    How many pieces of 32x48 come in this package. Description says 8 1/2” x32x48 ?
    ByNov 9, 2025
    1 Answer | 
    Answer This Question

    8 KERDI-BOARD waterproof building panels covering 101 ft². The KERDI-BOARD-KIT provides enough KERDI-BOARD to cover up to 101 ft² (9.4 m²) of wall area. For example, in installations with standard 8 ft. ceilings, the panels included will cover 12 linear feet (3.6 m).

    By|Aug 2, 2026

      (1)

      can I buy just the 1/2' x48' x 38' Kerdi wall panels individually instead of the full kit
      BySep 23, 2025
      1 Answer | 
      Answer This Question

      Please reach out to your local Home Depot store to order the KB121220812.

      By|Sep 24, 2025


        I am planning on installing a microcement walk-in shower for 104 sf shower that previously had tile installed. We have removed all of the drywall and want to use the Kerdi system. Will this work on the kerdi board?
        ByDec 25, 2024
        1 Answer | 
        Answer This Question

        I would suggest that you call Schluter Systems’ customer support line at 1-800-472-4588 to discuss a solution in greater detail.

        By|Dec 26, 2024


          I am re-tiling an alcove tub/ shower. The back wall has a very large glass block window, so I have calculated that I only need 6 of the 48 x 38" boards. Can I buy a kit with only 6 boards?
          ByJul 4, 2024
          1 Answer | 
          Answer This Question

          The KBKIT comes with QTY-8 building panels (each ½”X48”X38” total of 101 SQFT). We are not able to customize this kit.

          By|May 1, 2026

            (1)

            I am planning grab bars in the shower. The bars will anchor through the tile, through the kerdiboard and into studs. Will the Kerdiboard fully support the grab bars and tile or will the grab bars cause the kerdiboard to compress and crack the tile?
            ByMar 9, 2024
            1 Answer | 
            Answer This Question

            It is very difficult to answer a question like this without more details. I would suggest that you call Schluter Systems’ customer support line at 1-800-472-4588 to discuss a solution it greater detail.

            By|Mar 17, 2024

              (1)

              Can you tell me if the Schluter Kerdi board kit for the shower walls is Approved by the 2022 California Plumbing Code as a substrate for tile walls in a shower. Im only asking for the wall kit since I am using an acrylic shower pan.
              ByJan 24, 2024
              1 Answer | 
              Answer This Question

              I would suggest that you call Schluter Systems’ customer support line at 1-800-472-4588 to discuss a solution it greater detail.

              By|Jan 25, 2024


                Is this an alternative way of using a cement board and membrane in the shower? Is it strong enough to hold up 24 by 48 porcelain tile since it’s a heavy tile?
                ByJan 18, 2024
                1 Answer | 
                Answer This Question

                Please give us a call at 1-800-473-4588 so we can discuss you installation in more detail.

                By|Mar 7, 2024

                  (1)

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                  Customer Reviews

                  4.9 out of 5

                  • 4.9 out of 28 reviews
                  • 100% recommend this product
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                  Showing 1-10 of 28 reviews
                  This kit was perfect for my master bathroom DIY Remodel project. The Kerdi-Board is much easier to cut, mount and seal versus my last project where I used Cement board. I especially liked the pre-formed Kniche boxes. This beats having to build a frame in the wall to do this.
                  by
                  Rating provided by a verified purchaser...
                  Rating provided by a verified purchaser
                  by
                  • Verified Purchase
                  1 found this review helpful
                  This was SO much easier to work with than traditional green board. It cuts like butter. The scr...
                  This was SO much easier to work with than traditional green board. It cuts like butter. The screws come with it. We added niches to the surround as well and they were easy to incorporate. It's a definite for use our next bathroom project as well!
                  by
                  • Verified Purchase
                  • Recommended
                  6 found this review helpful
                  After the October 16, 2018 flood the removal of wet drywall was horrendous! When it came time to ...
                  After the October 16, 2018 flood the removal of wet drywall was horrendous! When it came time to replace my shower walls (after having to have pipes in foundation replaced because blocked with mud) WOW oh WOW! Light weight, easy to measure and cut! Having Everything in the kit was wonderful! I wish Kerdi board could replace all sheet rock! It is amazing!
                  by
                  • Verified Purchase
                  • Recommended
                  6 found this review helpful
                  Great product that's easy to use and works ... but VERY expensive
                  by
                  • Verified Purchase
                  This customer chose to rate the product and not provide text.
                  by
                  • Verified Purchase
                  Schluter is by far the best product nowadays to build a waterproof shower system that is not only DIY friendly but also affordable. This kit is great and comes with everything needed to get started efficiently. I will purchase the Schluter bench as well soon.
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                  This customer chose to rate the product and not provide text.
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                  • Verified Purchase
                  This customer chose to rate the product and not provide text.
                  by
                  • Verified Purchase
                  Smart system and is very well thought out. Cost a bit more but is worth the piece of mind not worrying about leaks.
                  by
                  • Verified Purchase
                  1 found this review helpful
                  Showing 1-10 of 28 reviews