Protect floors and walls from moisture

Choose the right material to keep moisture away from subfloors and wall cavities

By Tara Nolan

Photo by iStockPhoto/Thinkstock

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Moisture is enemy No. 1 in kitchens and bathrooms, which is why the wallboard you choose for a reno is so important. All of these picks can be used behind tile installations and all are top performers in the international ASTM D3273 test method for mould resistance.

HardieBacker 500 Board
This cement board does not have a paper facing, which can disintegrate with continuous moisture exposure and thus encourage mould. Besides tiling over it, you can also paint, texture or wallpaper.
Price: $18 per 1/2″ x 3′ x 5′ 
For more information:

DUROCK Next Gen Cement Board
This board claims not to swell, soften, decay, support mould growth, delaminate or disintegrate when it’s exposed to water. Non-combustible, it also can be used on exteriors.
Price: $37 per 1/2″ x 4′ x 8′
For more information:

DensShield Tile Backer
According to the DensShield website, this is the first backer board with a built-in moisture barrier, which protects against moisture that seeps through the grout in tile installations.
Price: $33 for 1/2″ x 4′ x 8′
For more information:

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