ATLANTA — Wolman AG preservative, a non-metallic solution applied by pressure-treatment, has been recognized for use within the Hallmark Certification of the Window and Door Manufacturers Assn. (WDMA), according to Building Online. Tests showed that Wolman AG preservative met the requirements of WDMA I.S.4, Industry Standard for Water-Repellent Preservative Treatment of Millwork, and is acceptable for use under the corresponding certification program.

With this distinction, Wolman AG can be used as part of certified windows, doors or skylights produced by licensees of the program. The formulation, developed by Arch Treatment Technologies Inc. of Smyrna, GA, comprises three carbon-based ingredients that enable wood to resist damage from fungal decay and termites.

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