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Old 03-27-2012, 08:39 AM   #1
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Best mortar mix for stone veneer


Hey, I finally got all my stone ordered to stick onto my foundation. I'm using a cultured stone made by "Dutch quality stone"....a few questions. I'm using a dry stack technique. My walls are clean poured concrete. I wasn't going to use lathe... The company's recommended mortar mix is 3 parts Portland cement, 2 parts thinset mortar, 7 parts sand. Does this sound like a good mixture? I'm also using a bonding agent called "Tammsweld". Anyone have any good/bad experience with it?.......last question, with thinset mortar, is that different from type n mortar? I've read a lot that says to use type N mortar. Thanks for the help

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Old 03-27-2012, 08:51 AM   #2
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Best mortar mix for stone veneer


As I'm looking at the I Instructions there is an alternate mix:

1 part type N masonry cement
2.25 parts sand
Bonding agent
Water

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Old 03-27-2012, 12:27 PM   #3
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Best mortar mix for stone veneer


Keep in mind there is a difference between Type N masonry cement and the common pre-proportioned Type N mortar that already has the sand in it, and the proportions may not be exactly the same as those you mentioned.

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Old 03-27-2012, 08:10 PM   #4
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Best mortar mix for stone veneer


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Originally Posted by heinlein0311 View Post
As I'm looking at the I Instructions there is an alternate mix:

1 part type N masonry cement
2.25 parts sand
Bonding agent
Water
I can speak from experience that this will certainly work, and it may even be a little too sticky for your liking. If so, add a little more sand. I haven't dabbled with the thinset for this, and I don't know if mixing additional Portland & sand into it is the way to go......

One more thing, if the stone your using won't benefit from being stained by the mortar, start at the top and lay down..........
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Old 03-27-2012, 08:21 PM   #5
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Best mortar mix for stone veneer


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Originally Posted by jomama45

I can speak from experience that this will certainly work, and it may even be a little too sticky for your liking. If so, add a little more sand. I haven't dabbled with the thinset for this, and I don't know if mixing additional Portland & sand into it is the way to go......

One more thing, if the stone your using won't benefit from being stained by the mortar, start at the top and lay down..........

Looks like that's what I've seen the most, the 2:1 ratio......the instructions say to start from the bottom up if using the dry stack technique to ensure tight fits. Now, I've never done this before but I would like to go from top to bottom So I'm not dropping mortar on the stone but can you get nice tight fits doing it that way?
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Old 03-27-2012, 08:25 PM   #6
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Best mortar mix for stone veneer


I've laid a lot of Dutch Stone in the past, but can't recall if I ever used their drystack. What's the actual name, I have the brochure in my files.....

......and if you want to lay from the bottom, you may want to consider a colored mortar that won't show up nearly as drastically on the stone.....
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Old 03-27-2012, 09:59 PM   #7
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Originally Posted by jomama45
I've laid a lot of Dutch Stone in the past, but can't recall if I ever used their drystack. What's the actual name, I have the brochure in my files.....

......and if you want to lay from the bottom, you may want to consider a colored mortar that won't show up nearly as drastically on the stone.....
I'm using their ledgestone..,.I will be using a mortar tint
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Old 03-28-2012, 03:56 PM   #8
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Best mortar mix for stone veneer


The lady where I'm buying the stone from says to use a "type s mortar" and add sand. The manufacturers Instructions say to use type n or s "masonry cement" and add sand. I'm not real certain on the differences so which seems better? She says that some people throw some Portland cement in with the mortar but since I'm using a bonding agent I won't need to do that. Please enlighten me
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Old 03-28-2012, 07:03 PM   #9
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Ok, did a little more research. I'm buying this stuff from a place that specializes in concrete. She's trying to sell me type s mortar which I'm assuming is pre-mixed. But, she says it still requires sand. Something like 20 scoops per 75 lb bag. Is this normal?
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Old 03-28-2012, 07:11 PM   #10
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Originally Posted by heinlein0311 View Post
Ok, did a little more research. I'm buying this stuff from a place that specializes in concrete. She's trying to sell me type s mortar which I'm assuming is pre-mixed. But, she says it still requires sand. Something like 20 scoops per 75 lb bag. Is this normal?
What you're likely buying is a 70# bag of Type S masonry cement which is merely lime and Portland cement, and possibly a few other cementicious components to replace the cement. Yes, you need to add sand, and the number of shovels is subjective based on how big of a shovel, how dry the sand, etc... The bags should have mixing instructions & proportions on them. You may still want to add a few ounces of bonding agent per batch to aid in adhesion.
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Old 03-29-2012, 08:00 AM   #11
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Got some clarification this morning. She keeps calling it mortar but it doesn't have sand in it. You have to add the sand separately. So basically it's masonry cement right? The sand is what makes it a mortar? I tried explaining that to her but to no avail. ....Hell maybe I'm the one still wrong. So

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