Substitute for fat mud?
I need to float a wall. They don't have fat mud mix where I'm at. From what I understand its just portland, lime and sand. We do have Amerimix Mortar Type S and Amerimix Mortar Type N. I believe S has a higher percentage of portland and N has a higher percentage of lime. I was thinking of using Type N. Thoughts?
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got er done! it was a lot harder than expected. Isaac makes it look so easy on the videos. i mixed both type N and S together because the appropriate ratio was somewhere in between. the hard part was getting the correct moisture content in the mix. i made it too dry at first because i was paranoid about putting too much water in it. it was hard to work when it was too dry and there were a lot of swear words being tossed around ;) i had to use more water than prescribed because its a dry climate here and the brick that we were applying it to was also very dry and would suck up the moisture despite wetting the brick first. at first I mixed a large batch in a large black basin which is not advisable. this took too long to mix by hand and it wasnt mixed as well. it was much better mixing small batches in a bucket with a paddle mixer on a drill in order to thoroughly mix it and to get the moisture content just right. the drier batch at first was setting too quickly to set my screed strips. after adding more water things went MUCH smoother but by then i was worn out from trying to work the dry mix ;) By the end of the process, i felt much more confident in my technique that was lacking at the beginning. hallelujah, i have a flat wall that i didnt have before.