Wood-framed balconies and terraces can be durable and long lasting; however, exposure to precipitation, especially rain combined with snow melt, presents challenges in design, construction, and maintenance. Wood-framed structural building components are susceptible to moisture and must be protected to reduce risk of rot, mould, and structural failure. Since this article focuses on waterproofing systems, balconies will be referred to, however, this topic also applies to terraces as well.