As a license-holding Hawaii state remodeling contractor, let me just say homes there are now required to be built completely with pressure-treated everything. Framing, sheathing, siding and roofing (if wood). Some people have started building homes using steel, but they too have problems, with rust from the salty air. Solutions to the Southeast's increasing Formosan termite problems will no doubt come from the pacific islands. Their research has developed some very interesting and effective solutions.