The Spray-O-Bond Company specializes in the restoration of stone on the historic façades of buildings. The stone restoration process begins with the inspection and removal of the necessary stone pieces, cleaning and addressing structural defects and securing adjacent façade elements. The replacement of the defective stone must be done by matching stone types and also requires repointing to ensure the façade is remediated. Examples of commonly restored stone are limestone, sandstone and granite.
Many types of natural stone are used in exterior building elements, including limestone, sandstone, granite, and marble. Poor stone quality, improper bedding of stone, inappropriate repointing mortar, oxide jacking of metal support elements, lack of flashing, weather, exposure, improper anchoring and design elements can all lead to the deterioration of the stone façade elements.