CSP manufactures specialized products for the maintenance and preservation of masonry buildings. They include: engineered mortars designed to protect the existing masonry through testing of the original substrate, exterior cleaning products that use no acids, paint strippers that strip without the need for acids, safe biological solutions for the removal of algae and lichen that are detrimental to masonry. The on-site laboratory provides quality control and analyses of existing masonry problems. Cathedral Stone also holds masonry training classes in traditional mortar applications around the country.