The concept of a wood siding rain screen is a simple yet effective method of protecting a home’s exterior. By creating a barrier between the wood siding and the outer sheathing, the siding acts as a “rain screen” to defend against the various elements such as snow, rain, sleet and wind-driven precipitation. The creation of this “wall cavity” serves multiple purposes, all of which are beneficial in protecting the home’s structure and integrity.

How A Rain Screen Benefits Your Home's Wall Cavity:

  1. The incorporation of a wall cavity in the design of a building allows for proper drainage of bulk water that may collect as a result of precipitation. Without such a feature, the moisture would be retained behind the siding, providing an ideal environment for mold growth due to darkness, high moisture levels, and an ample food source.
  2. The inclusion of a wall cavity in a building also facilitates the escape of any trapped indoor moisture. Without this feature, moisture would become trapped between the siding and the sheathing of the house, increasing the risk of mold growth, corrosion, and rot, which can shorten the structure’s overall lifespan.
  3. The presence of mold, mildew, and rot can lead to a variety of negative consequences, including unpleasant odors, poor living conditions, and structural issues.
  4. In modern construction, many homes are built closely together, making a wall cavity an essential component for proper moisture management and preventing the growth of mold, mildew, and rot, which can have detrimental effects on the building and its inhabitants.