Inside of each box are a series of “pucks”—one puck for each available color. The pucks are made of the Jahn Repair Mortar specific to the target substrate, so the colors have cured within the mortar (or on the surface of the mortar in the case of potassium silicate coating).

Unlike a restoration where we would want to return a modest headstone to its original appearance, the goal at Green-Wood Cemetery in Brooklyn, NY was to preserve its historical integrity and make it strong enough to return to the cemetery grounds.

ROCK Architecture & Engineering called on Cathedral Stone Products to assess 100 Grand Street in Lower Manhattan due to the delamination of its Tuckahoe marble facade. Jahn M120 Repair Mortar, specially engineered for compatibility with marble and which do not trap moisture or salt, were recommended.

Years of moisture and salt were damaging the original substrate at Hotel 17 in Lower Manhattan. Epstein Engineering sought a recommendation for a paint stripper to remove that non-breathable coating. Our Heavy Duty Paint Remover was specified.

Beware the easy route: it seems budget-savvy to use an inexpensive scratch coat for most of the depth and then complete the final few inches with a more expensive finishing product. But is it?

Wooden forms are highly useful for restoring stones to their original profile, especially when faced with large, heavy and seemingly daunting repairs.

Because brownstone requires a softer pointing mortar that can expand and contract with freeze/thaw cycles, use a softer mortar that’s compatible with the stone and color-match it to the varying shades of the substrate.