Waterproofing materials for wood & masonry; Tin-roof restoration systems; AcryMax acrylic roof coating system. Also: Masonry coating systems, church work.
Supplier of mini-duct systems for retrofitting HVAC systems: ideal for historic preservation; quiet, energy-efficient system; takes 1/4 space of conventional HVAC; delivers 12 tons of ac in same space as 3-ton traditional system.
Saving historic buildings with energy-efficient HVAC systems.
Small-duct systems with flexible tubing seem to be one answer to the search for energy-efficient HVAC systems suitable for historic buildings.