GessoJessoNoMesso
New Member
https://www.graymont.com/sites/default/files/pdf/tech/finish_lime_characteristics_1.pdf
High Calc Lime isn't widely available in the US. The closest supplier for me is limework.us. 20 hours drive total. For this reason I'm using dolomitic hydrated type S so far I haven't experienced any popping or de-lamination. Fingers crossed.
Magnesium is considered trash aggregate, I use normal cheaper hydrated masonry lime in scratch brown coats. It occured to me that in finish coats possibly I should decrease the amount of my aggregates by 28% to account for magnesiums presence. Is this thinking correct? Should I be doubling my lime to reach 86% calcium oxide content? and then decreasing aggregate? I realize this would be different for tadelakt. I'm mainly thinking about finish coat and skim layers of marmorino or other venetian styles.
High Calc Lime isn't widely available in the US. The closest supplier for me is limework.us. 20 hours drive total. For this reason I'm using dolomitic hydrated type S so far I haven't experienced any popping or de-lamination. Fingers crossed.
Magnesium is considered trash aggregate, I use normal cheaper hydrated masonry lime in scratch brown coats. It occured to me that in finish coats possibly I should decrease the amount of my aggregates by 28% to account for magnesiums presence. Is this thinking correct? Should I be doubling my lime to reach 86% calcium oxide content? and then decreasing aggregate? I realize this would be different for tadelakt. I'm mainly thinking about finish coat and skim layers of marmorino or other venetian styles.