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-   -   Floating without scratching (https://www.johnbridge.com/vbulletin/showthread.php?t=112840)

Viz 05-21-2014 12:13 AM

Floating without scratching
Hello everyone. First time Posting.
I have a customer who wants me to scratch and float her shower but does not want it to pass the drywall which is 5/8 thick. I tried to tell her to use hardibacker and we can waterproof after, but she is determined to have it floated. My question is can I paper and latch and then float the walls the same thickness as the drywall with out scratching or do I have to scratch and just try to keep it as tight as possible? Been looking for a thread for a few days but could not find one. Thanks in advance

cx 05-21-2014 12:51 PM

Welcome, Vis. :)

You can use a cleavage membrane and metal lath (minimum 2.5lb) directly over the wall studs and a scratch coat and "leveling" or "brown" coat of Portland cement mortar totaling 5/8ths" thickness if that's what you're asking.

There is at least one very long thread in the Professionals' Hangout about mud work that you may want to look at.

tiletime56 05-21-2014 05:24 PM

1 Attachment(s)
this shower wall was, paper, wired, scratched and floated to meet 5/8ths drywall so that I could install tile over the existing drywall to the left all in the same plain. the secret was to keep it thin and use the drywall ass your float strip.
Attachment 163696

Davy 05-21-2014 05:47 PM

I do it that way quite often. Like Shaun said, make your scratch coat real thin. Right on the edge of the sheetrock where it meets the mud, I'll nail a thin strip of wood, maybe 1/8 thick, then my tile will have a small joint behind it, plus it gives me 1/8 more mud. Use very small finish nails if you use the thin stick. Use the thin stick to ride your straight edge on.

Viz 05-21-2014 10:15 PM

Thanks for the replies guys. The other question would be if I can float it in one day or do I need to scratch one day then float the next day?

cx 05-21-2014 10:17 PM

Industry standards require a minimum of 24 hours cure between scratch and brown.

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