Efflorescence BY DANIEL GREEN The Portland Cement Association (PCA), in their Efflorescence Trowel Tips publication defines efflorescence as a crystalline deposit, usually white, that may develop on the surfaces of masonry construction. Efflorescence...

Mortar Types & MaSoN wOrK BY DANIEL GREEN Who would have thought that every other letter in the words ”mason work” were the origin for the letter designations assigned to the different types of mortar. In the 1950s’, these ”new” letter designations...

Leaking Masonry Walls / Leaking Mortar Joints BY DANIEL GREEN About a quarter century ago, Mr. C.T. Grimm, PE, whom I wish I could have met, published my favorite masonry article, “Masonry Problem Goes Unsolved for 100 Years”. The article discusses...