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Old 06-17-2008, 09:50 PM   #1
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kerdi floor - lumpy and air pockets

So we did our first kerdi shower and we started with the floor. Mud floor perfectly presloped min of 1/4" per foot. We started with the floor and wrapped the all the edges up the walls and curb min 2 inches with all the preformed inside corner pieces in the corners. We used megabond the first time and we couldnt get the kerdi to completly stick together so we ripped it all out, washed it and did it again with versabond. Versabond was much better! But I read that you dont want to squeeze out all the mortar, you only want to make the ridges from the trowel dissapear. So thats what we did and we didnt see until the next day that there are a few 1-2" air pockets , the whole thing is lumpy, and there are areas where it is not even 1/8" per foot now! I guess I pushed the thinset around too much and not even enough.

Now I finished and the rest of the shower went great, I squeezed out all the thinset for the walls. No problems.

What I am wondering is-- is the floor ok? We did a water test and it drains. I was thinking of skim coating the floor with thinset to get a good even slope and applying a second layer of kerdi over the top. Is this a good idea? Is two layers a bad idea?

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Old 06-17-2008, 10:19 PM   #2
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so your saying you have bubbles everywhere with the Kedri on the floor ?

I doubt you can squeeze out all the thinset, once it makes a bond its good.

do you have a steep pitch to your mudbed ?

you could razor knife the air pockets, press thinset in them and install Kerdi again over the top.
you need to make sure you have at least 2" of Kerdi passing any holes.
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Old 06-17-2008, 11:46 PM   #3
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kerdi fix. i think

hey neesie this smiley works every time.

happy b day jack
jeff aka papi chulo. "I'll make you famous!"(William H. Bonney aka Billy The Kid)

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