What is a Brownstone?
Serious question — What is the definition of a brownstone? Does the facade actually have to consist of “brownstone” (which I understand is a relatively low strength and easily worked sedimentary stone)? When I see brownstone facades being redone it looks like the workers mix up a mortar mix, add brown coloring and then apply to the facade. Are there “brownstones” that have something other then actual brownstone but have this brown mortar applied as a coating? I have always followed the rule that what looks like a brownstone must be a brownstone, but I am realizing that I don’t actually know if there are rules to what must be under the surface for a building to qualify as a brownstone.
