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Old 02-10-2019, 06:06 AM   #61
Dsimms
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Thanks for the replies. I may have missed it if somebody answered but how do I transition my hardi board to my shower pan? Since the pan was poured without the hardy board in it, and the hardy board is a quarter of an inch or so above the pan with a bead of silicone between the two surfaced, do I tile over the transition as is or put the fiba tape between the pan and the wall and mortar over it to make a complete transition?

So far the walls and pan have been installed as James Hardie recommends.
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Old 02-19-2019, 04:22 PM   #62
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Did anyone see my last post?
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Old 02-19-2019, 05:30 PM   #63
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Tried to get the information on your mud bed back a page or so without success, David. If you've already placed your final mud bed and you've installed your wall boards gapped above that mud bed, you do nothing else to that junction. One reason I prefer to see folks use a real CBU instead of Hardiebacker in shower applications. No way to stabilize the bottom of that wallboard unless maybe your shower floor tile rises above the bottom of the wallboard. But what you've done is the way you're supposed to do it according to James Hardie.

My opinion; worth price charged.
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Old 02-19-2019, 08:32 PM   #64
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You might use tape and thinset on the transition like you would a corner. Maybe that will help stabilize the Hardi, not sure.
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Old 02-22-2019, 11:05 PM   #65
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Thanks for the replies. The hardi board is actually rigid and does not appear to move. I guess I will try the tape the transition and mortar it.

Second question. Hardiboard on the floor butted up to a bathtub face. Should the gap be filled with silicone or something else? I thought I read somewhere that it shouldn’t be filled with mortar.
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Old 02-23-2019, 05:50 AM   #66
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That floor to tub joint typically gets filled with silicone, David.
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Old 02-23-2019, 08:49 AM   #67
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