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Custom Building Products

Model # GCB60L

Internet # 203689282

Store SKU # 683256

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

This item has been discontinued.
The Home Depot no longer carries this specific product.

$0.70 /sq. ft.
Covers 15.0 sq. ft.
$10.47 / each
Bulk Price Discount Available
This item qualifies for a bulk price discount
if you purchase at least 30 units. The
adjusted price will display in the Cart.


Model # GCB60L

Internet # 203689282

Store SKU # 683256

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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Product Length (in.) 
Product Thickness 
1/2 in. 
Product Width (in.) 
Commercial / Residential 
Commercial / Residential 
Flooring Product Type 
Backer Board 
Moisture Resistant 
Product Weight (lb.) 
44 lb 
Warranty / Certifications
ASTM D 3273 test results 
pass per ASTM E-2180 and ASTM G-21 
Manufacturer Warranty 
1 Year Product 


Rated 4.4 out of 5 by 7 reviewers.
Rated 5.0 out of 5.0 by 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. January 2, 2014
Rated 5.0 out of 5.0 by 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. May 11, 2015
Rated 5.0 out of 5.0 by 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. November 29, 2014
Rated 3.0 out of 5.0 by 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. June 10, 2015
Rated 4.0 out of 5.0 by 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 September 3, 2014
Rated 4.0 out of 5.0 by does the job relatively light in weight, paperless backing for tiles - no worry of loose tiles down the rad July 15, 2014
Rated 5.0 out of 5.0 by Practical product Used as floor underlayment beneath shower base set in cement. Works as it should. July 12, 2013
  • 2015-09-02T11:17:19.551-05:00
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