Diedrich Technologies, Inc.

Architectural & Specialty Cleaners, Graffiti Management & Removal System, Masonry Restoration Cleaning, New Construction Masonry Cleaners, Paint Removers, Water Repellents.

Manufacturer of masonry-restoration cleaners, water-repellent sealers & paint removers: interior & exterior applications; ENVIRESTORE 100, a safer restoration cleaner that retains patina.

Buying Guide Spotlight

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Brownstone Doors

Brownstone Doors specializes in expertly crafted reproduction of historic doors, entryways and storefronts. Our knowledge of New York City historic door details is unparalleled. We provide custom entry door solutions from conception to installation for historic and designer homes and commercial landmark properties.