Rainscreen in lower rainfall areas?
I recently ran across the following quote about rain screens:
“All wood frame wall assemblies require a drainage plane coupled with a drainage space – where it rains. “Where it rains” is defined as locations in North America that receive more than 20 inches of rain annually.” (Lstiburek, 1999; RR-0999 Drainage Planes and Air Spaces)
I’m currently designing a home in an area with less than 14 inches of ran annually and would appreciate any insights on this or where I might find more information. I have been planning to include a rain screen in our wall assembly and was caught off guard that there might circumstances where a rain screen in not considered necessary.
Thanks in advance for your consideration, Doug
GBA Detail Library
A collection of one thousand construction details organized by climate and house part