Stone and brick are assailed by multiple forces over time, and the extent of a structure’s resistance to them is dependent on how well designed it is.
A robustly built building may be able to bear up indefinitely against such forces, while a structure with a bad foundation, which does not shed water well, absorb movements and expansions, or is made from shoddy materials, will quickly deteriorate and require maintenance.
Over time, brick and stone buildings weather and age, and often new owners decide to clean them up to make them appear newer. I happen to prefer the rich, soft colors and patina of naturally aged stone. By removing all signs of aging, they also end up not only removing much of it’s character, but also speed up further deterioration through harsh chemical cleaning or sandblasting.
Spalling is a form of masonry deterioration in which the outer section of a stone, brick or mortar breaks away in a localized area. The term spalling sometimes can be a general one, refering to any type of coming away of the surface, such as exfoliation or delamination.
Purists who want to use real stone in their construction instead of the new manufactured stones often turn to limestone to meet their needs. Limestone is durable and widely found. It comes in a variety of natural colors that can accent the beauty of a home.
Ever wonder how builders these days can pick out such perfect stones for the front of new homes? They look like they were chosen according to a color scheme picked out by a designer! How is that possible?
The answer is that they have a cultured or manufactured stone exterior. "Cultured Stone" is one brand name of these cement "rocks," but there are other brands. Some people even create their own with molds!