Wedi Board vs Cement Board Breakdown

Brian Jeffries

December 24,2022

Brian Jeffries, a seasoned BPA Advisor. Brian is dedicated to sharing his wealth of knowledge on construction projects and materials. With a focus on architecture and building envelopes, Brian contributes valuable insights that shape the discourse around innovative construction practices and materials.

If you’re working on building the perfect bathroom, you will need to look at tile backers, specifically, which ones are best for the job. While the budget has major importance, you’re going to want to select something that’s built to last. It must prevent any moisture-related issues. On top of that, this needs to avoid mold and leaks. The two most common ones would be the Wedi board and the classic cement board. Both of these materials are widely used. But when it comes to Wedi Board vs. Cement Board, which is best? Continue reading to find out!

Wedi Board vs. Cement Board: The Basics

Before choosing which material you’ll need for your project, it’s best to get an underlying of the basics between the two.

What is Cement Board?

What is Cement Board?
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The cement boards are made of cement and fibers, which will contain cellulose. This is a heavy board that has water resistance. Typically, it’s considered more challenging to install due to its weight.

What is Wedi Board?

What is Wedi Board?
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The Wedi board is foam-based. This is covered with a thick layer of cement-resin coating and then combined with fiberglass mesh. Like cement board, this is used to waterproof bathrooms, showers, and even bathroom floors.

Wedi Board vs. Cement Board: What are the Advantages?

Wedi Board

  • Insulation
  • Saves on energy costs
  • It can protect against mold
  • Already comes waterproofed
  • Can be ordered online

Cement Board

  • Water-resistant
  • Mold resistant
  • More affordable
  • Easily found online

Wedi Board vs. Cement Board: What are the Disadvantages?

Wedi Board

  • Messier when cutting
  • Three times more expensive compared to cement board

Cement Board

  • It needs to be waterproofed before use
  • It cannot be ordered online
  • Very heavy

What are the Similarities?

Both are for bonding surface; they won’t warp and yet remains pliable, unlike cement board. The potential for wall damage is also minimized when workers carry the lighter Wedi board panels into a home, unlike heavy cement boards.


What is Wedi Board made out of?

Wedi board is made out of extruded polystyrene foam. It’s reinforced by fiberglass fabric and then coated with polymer cement.

Can you tile over the Wedi board?

Wedi board is ideal if you want to use ceramic tiles, as this can be installed directly on it.

Are cement boards waterproof?

Cement boards are not waterproof. However, they are water resistant. This means that they won’t entirely prevent the passage of water.

Can you tile directly on the cement board?

Ceramic tiles can be applied directly on top of cement boards.

Wedi Board vs. Cement Board: Which One is Worth Purchasing?

Wedi Board vs. Cement Boar
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Between Wedi Board vs. Cement board, it may be worth purchasing the Wedi board. Not only is this easy to buy, but it’s also very easy to install. On top of that, this is the best-suited choice for moisture-filled spaces such as the bath or shower area in the home. These are waterproof and they are water resistant too. While you may need to pay more for Wedi Board compared to the price for cement board, the ease of installation and the confidence that your space will be moisture and mold-resistant will immediately make this choice worth it!

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