Tech Notes
Coating Problems Caused by Differences in Glass-Mat Sheathing
Glass-mat gypsum board has long been the choice of builders for exterior wall sheathing. These sheathing boards are required to meet ASTM C 1177 Standard Specification for Glass-Mat Gypsum Substrate for Use as Sheathing and consist of a noncombustible water-resistant gypsum core, surfaced with glass-mat partially or completely embedded in the core.
Inappropriate Use and Expectations of Iron-Containing Stone
In recent years, the use of natural stone in new construction and landscape design has become increasingly popular. While natural stone can be a beautiful and durable part of a construction project, the mineral composition of certain stone types can create problems once the stone is exposed to weathering.