#1 Home Improvement Retailer

Internet # 202967605

Model # KB121220812

Store SKU # 287888

Kerdi-Board 1/2 in. x 32 in. x 48 in. Building Panel

$43.09
See Low Price in Cart
Apply Now
6 Months Everyday Financing** available on purchases of $299 or more. Apply Now
  • Multi-functional tile used on building and substrate panels
  • Made with a durable and waterproof extruded polystyrene
  • Lightweight structure ensures easy handling and transportation
  • View More Details

Free & Easy Returns In Store or Online

Return this item within 90 days of purchase.

Read Return Policy

Ask about this product

Get an answer now with AI

AI-generated from the text of manufacturer documentation. To verify or get additional information, please contact The Home Depot customer service.

Product Details

About This Product

Kerdi-Board is a multifunctional tile substrate and building panel that can be used for creating bonded waterproofing assemblies with tile coverings. Kerdi-Board is made from an extruded polystyrene foam panel, with a special reinforcement material on both sides and fleece webbing for effective anchoring in thin-set mortar. It can be used in the creation of a broad range of building elements, such as showers and bathtub surrounds.

Highlights

  • Panel dimensions are 1/2 in. x 32 in. x 48 in.
  • Made of extruded polystyrene foam
  • Dust-free and easy to cut with a utility knife
  • Lightweight, easy to handle and transport
  • Gridlines printed on the surface assist in making clean cuts
  • Tile can be installed directly over Kerdi-Board using the thinset method
  • For use with ceramic and natural stone tile
  • Return Policy
  • California residents
     see Prop 65 WARNINGS

Product Information

Internet # 202967605

Model # KB121220812

Store SKU # 287888

Specifications

Dimensions

Product Length (in.)

32 in

Product thickness (mil)

.5

Recommended overlap (in.)

0

Details

Color Family

Orange

Flooring Material Features

Waterproof

Flooring Product Type

Underlayment

Flooring Type

Ceramic, Porcelain, Stone, Tile

Location

Interior wall, Shower, Tub surround

Material

Polystyrene Foam

Package coverage (sq. ft.)

10.67

Returnable

90-Day

Subflooring type

Any

Warranty / Certifications

Manufacturer Warranty

10 Year Limited Warranty

Questions & Answers

I'm tearing out tile in small shower. putting in stackable washer/dryer so laundry can be on main floor-already fell down stairs once. need simple and cost effective to put up where tile is taken down to studs per plumber. Is it paintable?
ByMay 3, 2026
1 Answer | 
Answer This Question

No, this is not intended to have paint applied over it. Please reach out to the Schluter Systems' customer support line at 1-800-472-4588 to discuss options for your project.

By|May 7, 2026


    hi Would you know if it helps with sound from the bathroom
    BySep 17, 2025
    1 Answer | 
    Answer This Question

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

    By|Sep 17, 2025


      Can I use redgard on this board?
      ByFeb 23, 2025
      1 Answer | 
      Answer This Question

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

      By|Feb 24, 2025


        what flame spread of this? looking for 25 flame spread
        ByFeb 20, 2020
        0 Answer | 
        Answer This Question

        What is the weight on one Schluter Kerdi-Board 1/2 in. x 32 in. x 48 in. Building Panel? Can you use ProLite for tiling over this Kerdi-Board?
        ByJan 18, 2019
        1 Answer | 
        Answer This Question

        2.18 Pounds

        By|Sep 19, 2025


          Dose this board have an R value on it?
          BySep 1, 2017
          1 Answer | 
          Answer This Question

          This product's description and specifications don't list an R-value. R-value typically refers to thermal resistance, which is a measure of how well a material resists the flow of heat. Since this is primarily used as a tile substrate and building panel in wet areas like showers, its thermal properties might not be a primary focus.

          By|Feb 20, 2025


          Is the 48" X 96" available thru Home Depot?
          ByApr 4, 2017
          1 Answer | 
          Answer This Question

          Hello Frank, we do not offer the 48" x 96" Kerdi-Board Building panel on Homedepot.com. We appreciate your business and look forward to serving you in the future. Thank you for shopping Home Depot!

          By|Mar 28, 2026

          (2)

          Can I use this under floor tile?
          ByAug 5, 2016
          1 Answer | 
          Answer This Question

          Yes, this product can be used under floor tile. It's designed as a multifunctional tile substrate and building panel for creating bonded waterproofing assemblies with tile coverings. It's suitable for use with both ceramic and natural stone tile.

          By|Feb 20, 2025


          Viewing 1-8 of 14

          Customer Reviews

          4.6 out of 5

          • 4.6 out of 21 reviews
          • 0% recommend this product
          Filter by:
          Showing 1-10 of 21 reviews
          Using Kerdi Board for walls of shower was so much easier and straight forward! Lines on it made it easy to measure and cut with a circular saw or utility knife. Waterproofing the seams and other penetrations was simple and created a waterproof barrier without the mess of other products.
          by
          1 found this review helpful
          This customer chose to rate the product and not provide text.
          by
          • Verified Purchase
          This customer chose to rate the product and not provide text.
          by
          • Verified Purchase
          This customer chose to rate the product and not provide text.
          by
          • Verified Purchase
          Light weight, easy to use
          by
          • Verified Purchase
          1 found this review helpful
          Was very easy to install cut the time in half to install
          by
          • Verified Purchase
          1 found this review helpful
          This customer chose to rate the product and not provide text.
          by
          • Verified Purchase
          This customer chose to rate the product and not provide text.
          by
          • Verified Purchase
          Kerdi board worked well for finishing shower and tub bath. I have used the product on many remodels.
          by
          • Verified Purchase
          1 found this review helpful
          This customer chose to rate the product and not provide text.
          by
          • Verified Purchase
          Showing 1-10 of 21 reviews

          Compare Key Features

          current item

          Product Snapshot

          Ideal for tile installations, ensuring waterproof protection and easy, dust-free setup.
          Ideal for preventing leaks and mold growth in tile installations, ensuring a fully waterproofed subfloor. Must-have for anyone looking to achieve professional-grade waterproofing with ease.
          Ideal for customers who want a waterproof barrier, ensuring protection against leaks and mold growth. Great for homeowners looking for a reliable underlayment, making tile installation easier.

          Thickness

          0.5 in.
          4 mil
          4 mil

          Sound Absorption

          Moisture Barrier

          Thermal Insulation

          Extruded polystyrene foam

          Compatibility with Floor Type

          Ceramic, porcelain, stone, tile
          Ceramic, Porcelain, Stone, Tile
          Ceramic, Porcelain, Stone, Tile