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kt82 12-16-2012 03:10 PM

using masonry type S and lathe to level floor
I need to raise one side of my bath 3/4'' to bring it to level..
before I lay the tile.
The house is a 1930's pier and beam with2x8 joist 24'' OC - 1x8 CM sheathing and 1 layer of 3/4'' fir subfloor

I have 3 bags of Type S masonry mortar left over I want use
$24 is $24 right ? type S is portland and sand with some lime thrown in?
Can I nail down my lathe and build the low side up with
the type S and feather in with a self leveling product?

joecaption 12-16-2012 05:07 PM

What's the clear span on the joist.
2 X 8's on 24" centers is not a great floor for any type of tile. Way under sized.
The right way to fix this would be by working under the floor to figure out the floor is sagging and fix that.
My guess would be because of the undersized and spaced to far apart joist.

kt82 12-16-2012 05:37 PM

thanks for your concern but sagging isn't the problem or the question
the question is " is using type S masonry the same as mixing sand and portland
to make a mud bed on galvanized lathe "
I have always dreaded taking out those old style mud beds
and have always wanted to use one to level a floor
will the "extra strength TYPE S be a problem?

JazMan 12-17-2012 03:28 PM

You're not doing masonry, so don't use it. You don't want/need the lime, makes it sticky and harder to work with as a setting bed. You want Portland/sand at about 1:5 mixed supper dry.

You can buy bagged material like this; It's a 1:3 mix, so add some sand to make it easier to work with. :thumbsup:

BTW, it's "lath" not "lathe". This is a lathe,


kt82 12-18-2012 08:23 AM

I tried spreading some yesterday and you are correct. the lime makes it impossible to level .Thanks again

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