Experiments at Algonquin College

I’ve been conducting experiments at Algonquin College!  What fun.  Their Masonry Lab with its specialized tools and machines all hooked up to computers is not an environment most masons ever get to play in.   The textbook says X will happen.   I get to test and see what that really means.

Sealant around window sills

Window sills are a place where water often gets in, and can cause damage not only to the exterior wall but even the interior walls. Why?  Usually there are a variety of materials competing at this part of the house, each with a different rate of thermal expansion and contraction.  Read More