We found we needed to remove and rebuild the entire roof. Rot and mold were discovered in many areas of the roof structure. The existing roofing material contained an asbestos underlayment that was adhered to the wood structure, was difficult to remove, and proved to be a future hazard. The decision was made to remove the roof sheathing and joists and replace them with locally harvested lumber, including Forest Service Council certified plywood. Any salvaged portions of the existing roof structure will be reused in the light monitor roof framing.
-- Dan Rasmusson, Project Architect of the Rice Fergus Miller New Office and Studio project
