The lab tour was a big highlight: students were especially struck by our salt testing program and the ways salts interact with mortar, lime, and coatings — including latex, acrylic, elastomeric, and potassium silicate systems. It's one thing to know that incompatible materials can fail; it's another to see the evidence of how and why.

August 12, 2026 at 2:30 PM ET

"They were fearless," said Dennis. "Every one of them finished a patch. Mortar was smeared on faces, in their hair, on their clothes — none of it bothered them."

There aren't many stonemasons who can say they've jackhammered the White House. But during the Reagan administration, that's exactly what I did.

The first product in the line is the Masonry Maintenance Kit, and it's designed around a simple principle: most masonry maintenance decisions are decisions about which product to use, and you should not make that decision without testing.

A heads-up that prices on most of our products are going up 5% on June 1, 2026.

Terra cotta has defined the character of American architecture for more than a century—but restoring and maintaining Terra Cotta takes specialized expertise.

Join Craig Schnellbacher, Senior Technical Specialist at Cathedral Stone Products, for an in-depth session built specifically for architects and engineers working with this iconic material.