How To Lighten Grey Mortar Color

 
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Old 05-28-2012, 09:01 PM   #1
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How To Lighten Grey Mortar Color


Masonry gurus, I am trying to mix some mortar that is light grey in color to match some pool coping. I mixed some txi masonry cement 3 parts sand to 1 part mortar and its not light enough. What is too much sand in the mixture? Can I mix in white portland cement to lighten the color a touch. Thanks
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Old 05-28-2012, 09:12 PM   #2
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Re: How To Lighten Grey Mortar Color


Lots of options here, White mortar being probably the easiest. Add some lime would make it whiter. White sand or silica sand will help out.

More yellow or brown sand really won't help much. A dash of portland might help, but don't over do it.

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Old 05-28-2012, 09:20 PM   #3
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Re: How To Lighten Grey Mortar Color


Thanks a lot. I wasnt sure if adding more portland white would throw off the mixture in a negative way. Ill mix up a sample tomorrow.
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Old 05-28-2012, 10:00 PM   #4
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Re: How To Lighten Grey Mortar Color


If you get it too rich, it will get brittle. I would try to find white sand first off then white mortar or lime. Lime really makes it white. probably too white, but you can play with it some.
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Old 05-28-2012, 10:18 PM   #5
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Re: How To Lighten Grey Mortar Color


I have already looked for white sand locally and have not had any luck. I dont need to lighten up too much so hopefully i can get away with a touch of white portland.
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Old 05-29-2012, 07:13 AM   #6
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Re: How To Lighten Grey Mortar Color


Try to find white type S mortar...that would make it more simple than getting your portland/lime ratios right if you are not familiar with mortar mix design.
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Old 05-29-2012, 09:09 AM   #7
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Re: How To Lighten Grey Mortar Color


acrylic hues.
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Old 05-29-2012, 03:05 PM   #8
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Re: How To Lighten Grey Mortar Color


As stonecutter said, get some federal white type S or N and substitute a bit for the grey cement.
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Old 05-29-2012, 06:43 PM   #9
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Re: How To Lighten Grey Mortar Color


Dragon light dries light tan-ish if you can find it and use tan sand.
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Old 05-29-2012, 07:33 PM   #10
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Re: How To Lighten Grey Mortar Color


Quote:
Originally Posted by stonecutter View Post
Try to find white type S mortar...that would make it more simple than getting your portland/lime ratios right if you are not familiar with mortar mix design.
Yeah, start with light and then darken it, much easier than starting dark and trying to lighten.
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Old 05-29-2012, 11:37 PM   #11
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Re: How To Lighten Grey Mortar Color


If you put acrylic pigment into your mortar, you are a handyman at best.


Edit
That is not quite true. White pigment is titanium dioxide so it is acceptable, but not the most effective way to lighten mortar.

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Last edited by Tscarborough; 05-29-2012 at 11:41 PM.
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