Model # GCB60L

Internet #203689282

Store SKU #683256

Custom Building Products WonderBoard Lite 5 ft. x 3 ft. x 7/16 in. Backer Board

Custom Building Products

WonderBoard Lite 5 ft. x 3 ft. x 7/16 in. Backer Board

  • Meets all ANSI standards for cement backerboard
  • For use in wet areas
  • For indoor and outdoor use
$10.47 / each
If you buy 45 or more
$8.38 / each

Frequently Bought Together

Product Overview

The Custom Building Products WonderBoard Lite 5 ft. x 3 ft. x 7/16 in. Backer Board provides a stable surface for installing tile or stone and protects against moisture. Ideal for both interior and exterior substrate applications. Protects against excessive moisture in wet areas such as showers, saunas and steam rooms.

California residents: see   Proposition 65 information

  • New formula - same durable performance with faster, easier installation
  • Creates a smooth, level, stable surface for installing tile or stone on walls, floors or countertops
  • 3 ft. x 5 ft. coverage area
  • Composed of stable portland cement, aggregates and reinforcement
  • Protects against excessive moisture in wet areas such as showers, saunas and steam rooms

Info & Guides

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Customer Questions & Answers

Does wonder board need a backing material when applied to interior walls, or can it be screwed directly to the studs?

Asked by: Glennster
You can screw it directly to the studs and water proof it with a coat of Red Gard for added protection after it has been hung. Or in our case, we stapled some heavy duty polythene to the studs before installing the backer board and we plan to coat it with Red Gard too.
Answered by: LosRubios
Date published: 2017-01-27

can i use wonder board instead of wire mesh and thin set for out side walls for cultured stone

Asked by: coco
Yes. Wonderboard is made from cement and can handle being soaked in water. Water that gets in will evaporate out. Use decking screws which are slower to rust.
Answered by: Greg
Date published: 2016-08-26

Can a plastic tub surround kit be applied to Wonderboard?

Asked by: HMan1953
Yes. Wonderboard is cement board and can handle water. I found it to be a good board to use in general. It's very solid and takes screws without crumbling or punching through. That can be a problem with low quality cement boards. It keeps a flat shape under screws and doesn't bow out from the pressure. Best board out there where water exposure is an issue.
Answered by: Greg
Date published: 2016-09-14

How do I install Wonderboard over oak flooring ?

I am installing ceramic tile over oak flooring, but I want to put Wonderboard over the flooring before I lay the tile. Do I need to apply thinset before I put down the Wonderboard? What kind of screws should I use to fasten the Wonderboard to the wood flooring? What would be the spacing of the screws?
Asked by: Carltee
Not sure why you would cover up oak flooring, which generally enhances home value. You can lay the Wonderboard flat and screw it in, but this product is really made for walls, not floors. It can handle unlimited water itself but it's not a water barrier. Water can soak in without damaging it and then evaporates away when it's vertical on a wall, but it still needs a water barrier behind it if it's on wood (for example in a shower when it's against the shower frame). If your floors can be sanded and refinished, it may end up being less expensive than tiling and a real wood floor will raise the value of your home.
Answered by: Greg
Date published: 2016-03-09
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Customer Reviews

WonderBoard Lite 5 ft. x 3 ft. x 7/16 in. Backer Board is rated 4.2 out of 5 by 11.
Rated 4 out of 5 by from Really pleased with this! A friend had recommended wonderboard to me & I couldn't be happier that I went with it! It's so easy to score & snap, & although it took someone other than me to place them (I'm on the short side), it was easy for them to place & install each board. No issues at all with using the Rock-On #9 x 1-1/4 in. Phillips High Low Threaded Wafer-Head Cement Board Screws, they went in like butter, but feel very secure. 4 stars for appearance, I mean, it's cement board, it's not pretty. 4 stars for ease of installation because it's as tall as I am, & I couldn't lift it, place it & screw it down myself, but for the Boys who are bigger & stronger than me, it was a snap. Some people have complained of the chemical smell. We could definitely smell it when we brought it in, but, it sat for a few days in the bathroom before we installed it (maybe between 4-6 days) & by the time we were ready to install it, we couldn't discern any lingering scent.
Date published: 2016-03-24
Rated 5 out of 5 by from This type of rock board is so much easier to use. well priced This type of rock board is so much easier to use. well priced
Date published: 2016-10-26
Rated 1 out of 5 by from Not very durable Used this product because Home Depot was out of the Hardibacker. Corners damage very easily. Be very careful of crushing around the perimeter.
Date published: 2015-09-09
Rated 5 out of 5 by from Very easy to use, light enough for one person to install Used this as the drywall for a bathtub/shower enclosure walls with great results. It is very easy to cut and shape using a standard utility knife and light enough for one person to hang. The blade on the utility knife was dull after cutting about 5 sheets but that is to be expected. A couple of tips I discovered while doing this job may be helpful to other users: 1. I used a cordless hammer drill on low speed to set the cement board screws. The hammer drill made the screws bite more easily into the backer board particularly around the edges where the backer board material is harder. 2. I used an oscillating saw with a Dremel 1/16" grout removal blade to cut the square hole I needed for the shower niche. Very little dust and the carbide blade made cutting the backer board with a clean, straight edge very easy. 3. For the cut outs around the shower control and faucet/shower head, I used a Rotozip tile cutting bit which had no trouble plunge cutting the backer board and giving me tidy holes that fit straight over the shower fittings first time. We stapled a plastic vapor barrier underneath the backer board for extra protection before installing the backer board and we plan to finish the job off with Red Gard to waterproof the backer board before tiling.
Date published: 2015-05-11
Rated 5 out of 5 by from Perfect product for the DIYers I recently renovated a basement bathroom. I removed an old fiberglass shower stall and move a few doors and a few walls... an almost total redesign and renovation. I have used backerboard before but not Wonderboard and not this light weight product. Let me tell you, cutting and shaping is definitely a Wonder. This stuff is very forgiving for the novice and easily manipulated by the expert (I fall somewhere in between). A good product for a good price.
Date published: 2014-11-29
Rated 5 out of 5 by from Light weight makes it easy to handle and install Wonderboard Lite was so easy to install. I never saw it used before and was surprised what a great product it was. So easy to score it and snap off what isn't needed to fit any spot.
Date published: 2014-01-02
Rated 3 out of 5 by from Lite board is not better The lighter board is easier to handle only because of the weight. It works, but as you lift it and move it around it bends, flexes, and you can hear the concrete crunching into pieces inside the mesh. When you put screws through it, the board is less solid and the screw has less to grab, very unforgiving of too much screw torque, more likely to punch a hole with the screw head. This board flexes after you get it up on the stud wall. More importantly, you are probably matching 5/8 inch sheetrock at the borders, so thinner 7/16 inch wonder board does not match, creating an elevation difference. I will never use the lite stuff again, strongly recommend to use the heavier original wonder board.
Date published: 2015-06-10
Rated 4 out of 5 by from Easy Install / add RedGard sealant to ensure full water proofing Very easy to install, worked well as backer board for shower. Recommend using RedGard sealant to ensure 100% water tight seal. Much lighter than regular DuRock / Cement Board
Date published: 2014-09-04
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