Our simple solution achieves an almost invisible repair using Cathedral Stone Products’ non- and low-acid cleaners and our standard and laboratory-matched pigments and stains.

In this two-part series, I look at a pair of scenarios in which contractors often presume repair is impossible and replacement with cast stone is the only option. Part 1 addresses instances when terra cotta units can be repaired “in situ” rather than removed.

It was still winter when they received their Jahn Certification, so they began casting new units indoors, working in a climate-controlled area and prepping the building as weather allowed. When warm weather arrived, the units were ready to install.

Recommendations: How to choose the correct Jahn Mortar for patching and making repairs to cast-stone panels installed on an entire building.

In 1966, the 31-story I.M. Pei-designed residential structure at 505 LaGuardia Place was heralded for its Brutalist contemporary architecture and innovative poured concrete construction. But by the early 21st century, the New York City Landmark needed help.

John G. Waite Architects brought Cathedral Stone Products in to assist with the preservation of Castle Clinton, a property with a fascinating history as the first US immigration station.

Cleaning of the interior of a beautiful chapel in a gorgeous setting, with a striking 145-foot bell tower and the Atlantic Ocean as a backdrop, using Cathedral Stone Products’ waterless cleaning system—our Latex Based Cleaner is the ultimate interior solution when you want to avoid using water.

The product has successfully removed biological, carbon, and rust staining on other difficult-to-clean projects where our standard cleaners and removers were not as effective.