Hydrochemical Techniques, Inc.

Manufacturer of Hydroclean Restoration Cleaning Systems: for interior & exterior masonry cleaning; paint remover.

Slate and Copper Services specializes in the installation, maintenance and repair of slate, tile, wood and copper roofing systems.

Masonry Restoration & Cleaning

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

Window Restoration & Repair

Stone & Masonry Tools

Tools for stone carving; church work; pneumatic mortar-removal kit

Hydrochemical Techniques, Inc.

Slate & Copper Services

Diedrich Technologies, Inc.

Structural Restoration Services, Inc.

Trow and Holden Co., Inc.