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HardyBoard or Durock Cement board to Concrete Wall

HardyBoard or Durock Cement board to Concrete Wall


Old 07-13-18, 10:55 PM
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HardyBoard or Durock Cement board to Concrete Wall

The long side of my tub has a concrete wall.
The top depth is 1 1/2", and the bottom will fit a 1/2" thick board on the tub top-lip.

Can I shim up the top with two pieces of board with strips glued together to 1" to then glue or screw one whole piece onto the wall?
Can I use liquid nails or mortor/Thinset?
I used 1/2" wood strips 24 years ago to nail to.

( I then am going to coat everything with Redgard or Aqua Defense.)
-- Rick
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Old 10-04-18, 07:25 PM
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You could probably use a few Tapcon screws and liquid nails to secure the wood back to the cement blocking. I donít see anything wrong with doubling up two pieces as long as they are well secured.
Old 10-05-18, 02:26 AM
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Is that pressure treated wood against the block? if it isn't - now is a good time to change it out to PT.
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