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

Whether you’re color-matching on-site or sending us a sample for our lab custom color match, always clean the masonry you intend to use for your color match.

Injection grout selection was a factor in the successful restoration of the historic marble at Independence Hall.

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.

In the restoration the decorative entrance of the Cathedral of Immaculate Conception, M70 is the only mortar with an extended drying time that would allow for carving of the intricate ornamental features. Other mortars are polymer/glue-based and set rapidly, so they certainly wouldn’t allow for carving over several hours.

Two other options for color matching patches are: an opaque Potassium Silicate coating and a custom color mortar (which you can get with a laboratory color match or by tweaking mortar colors on-site).

DNA Contracting shined in matching the mortar patches with the surrounding masonry at New York University’s 30-story Silver Towers.

Back in the late 1980s, a local architect asked me to come to the Wye House Estate on Maryland’s Eastern Shore, outside of Easton, to have a look at some aged and failing grave markers of the Lloyd and Tilghman families.