Header failure is the partial or full collapse or deterioration of a door, window, or opening in a masonry wall. Masonry deteriorates over time as a result of hydration, exposure to elements, and is negatuvely affected by freeze – thaw cycles and weather conditions. The… Read More »Header failure
Encyclopedia of Historic Masonry Restoration
Hip roofs can be a gradual relatively low slope or high slope roofs. In the image below you can see an example of a hipped steeple roof roof with a Joe Carmen slate tile as the roofing shingle material.
Hollow (modern) brick, aka perforated brick is brick that is not made for structural purposes. By comparison, almost all historic bricks were made for structural purposes. They comprised the walls of the historic buildings we see today. They created the structural load path for the… Read More »Hollow (modern) brick, aka perforated brick
Many of the materials used in modern vapor barriers, membranes, adhesives and sealants are made with homopolymers and heteropolymers. There are naturally occurring homopolymers and heteropolymers; however, the majority used in modern building construction are synthetic.