Roofs Documents

BSD-105: Understanding Drainage Planes by Joseph Lstiburek — last modified 2008/10/14

Controlling rain is the single most important factor in the design and construction of durable buildings and in the control of mold. Drainage planes are used in the design and construction of building enclosures to control rain. All exterior claddings pass some rainwater. Siding leaks, brick leaks, stucco leaks, stone leaks, etc. As such, some control of this penetrating rainwater is required. In most walls, this penetrating rainwater is controlled by the drainage plane that directs the penetrating water downwards and outwards.

BSD-149: Unvented Roof Assemblies for All Climates by Christopher Schumacher — last modified 2008/09/09

A brief description of different types of unvented roof assemblies and the benefits of unvented roof construction.