Adhesive For Flagstone To Concrete

 
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Old 06-05-2006, 10:47 PM   #1
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Adhesive For Flagstone To Concrete


is there an adhesive out there that can bond stone to concrete (do not have room for 2" of mortar --- have more like 1/4" - 3/4:" gap)



any takers?
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Old 06-06-2006, 05:38 PM   #2
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Re: Adhesive For Flagstone To Concrete


thinset might work.i watched this old renthouse saturday,and they were appling stone veener to concrete wall using thinset.it might work.and it might not.

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Old 06-06-2006, 07:15 PM   #3
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Re: Adhesive For Flagstone To Concrete


Thinset will work,but it doesn't have any body to it to adjust for the varying thickness of stone.I would use a thin bed of some rich morter,possibly spec mix in combination with the thinset applying the thinset to the concrete and the stone with a thin morter joint between or mixing the two together creating a thinset with body.
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Old 06-06-2006, 09:00 PM   #4
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Re: Adhesive For Flagstone To Concrete


Or you could use the granite/marble medium set from HD. Has a little more body and can be used up to 3/4 inch thick. Would work best if all of the stone was of the same thickness.
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Old 06-06-2006, 09:25 PM   #5
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Re: Adhesive For Flagstone To Concrete


Quote:
Originally Posted by jvcstone
Or you could use the granite/marble medium set from HD. Has a little more body and can be used up to 3/4 inch thick. Would work best if all of the stone was of the same thickness.
JVC
I've seen the G/M set but have never used it.I take it's basically thinset with a larger grit. Sounds like a good idea.A latex additive or concrete glue wouldn't hurt either with the thin bed,especially if freezing or ice is a problem.
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Old 06-06-2006, 09:36 PM   #6
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Re: Adhesive For Flagstone To Concrete


i have never used this product either,but the house i am on now has a boat load of slate i have to lay and that is what they have to lay it with.the h/o has layed the slate in the laundry room already and it seems to work very well.i hope it does because the slate tiles are not very equal in thickness.
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Old 06-06-2006, 09:42 PM   #7
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Re: Adhesive For Flagstone To Concrete


yeah Thinset was what I figured

hope it works ...

hahah guess we'll find outeek:
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Old 06-06-2006, 10:08 PM   #8
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Re: Adhesive For Flagstone To Concrete


Quote:
Originally Posted by dirt diggler
yeah Thinset was what I figured

hope it works ...

hahah guess we'll find outeek:
Not sure what kind of flag you're using,but you're liable to get a lot of voids with straight thinset.The mediumset as jvc suggested sounds better.
I like to pack in the joints as i go, leaving them down only enough for grout.About 1/4 ".It helps lock in the stone.Wetting the back helps with adhesion,parging with thinset or neat is better.Make sure the back is clean.Many times people will wonder why their grout joints are cracking when it's really a void and the stone is actually flexing(quartzsite especially)or come loose.

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