I have lived here for ten years in a concrete block house with wooden truss roofing system. The house is now close to 30 years old. Believe it is the original wood. Trust me I will be going with galvanized steel trusses when it is time to replace. May make the replacement roof much higher than the original and have the option of adding a second floor later, or just use it as an open deck. Wood looks great, and if you dont mind replacing it, use it for decorative purposes, but from where I am sitting under the annual rain of termite wings.... not again.