Roles

As with the chemical cleaning, test areas must be done. In fact, on painted buildings, a test patch should be conducted on each elevation, because building fronts are generally painted more frequently. Once the paint has been removed, if it is a brick or

Letters

More on Efflorescence
Editor:

The recommendations in Michael Merrigan's article on efflorescence (Masonry, September/October, 1986) are, in my opinion, cause for concern. He suggests that sandblasting should be used with ca

an attempt to reduce soiling and thus maintenance costs. The rain screen principle, invented millennia ago, is now standard practice in modern cavity-wall construction. It is designed to allow moisture in the exterior cladding to escape into t

Bank Announces Plans to
Restore Historic Rookery
Building in Chicago

Continental Bank has announced a five-year restoration program to return the landmark Rookery building in Chicago's Financial district to the original beauty and utili

Contest, Banquet Honor Apprentices
Competition was recently held among the 109 apprentices participating in the Annual Phoenix (Ariz.) Bricklayers JA & TC Contest. The local field was narrowed to 40 apprentices during the preliminary competition held