Unlike most buildings lumber used to construct a SunCatcher can be subject to exposure to moisture both inside and out during the lifetime of a structure. There are a number of woods (besides pressure treated) that are suitable for use in moist environments. Therefore, other types of wood equal to or better than pressure treated may be substituted for pressure treated lumber accordingly and in compliance with code. The builder must be careful to properly seal any materials that should not be exposed to extreme moisture.
