Stain samples for faded patching.


Various kinds of reports are now required submittals for many masonry restoration projects. With minimal input from you, we can do the technical writing to meet reporting requirements and work with you to field any questions that might come up.

especially for contractors

More and more, materials analysis is becoming the contractor's responsibility as part of the construction process. We can provide analysis of not only mortar, but also plaster, stone, brick, and terra cotta from samples we take, or that you supply. Our standard mortar analysis method  is petrography supported by acid digestion, but we can help you with any specified method.

Comparison of mortar sand with lab samples

Every preservation project comes with surprises. Specified products don't work as expected; unusual conditions demand creative solutions. As your consultant, we can help smooth out the rough spots, bridging any communication gap between you and the project designer.

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Historic Treatment and Quality Control Programs

Materials Testing

110 Kensington Avenue
Trenton, NJ 08618

Schnabel Conservation L.L.C.

lorraine @ schnabelconservation .com