In northern virginia 1960’s masonry  building with wood joists:Thinking about energy retrofitting my basement but am concerned about increasing the possibility of rotting wood joists:The existing joists sit on a… In northern virginia 1960’s masonry  building with wood joists:Thinking about energy retrofitting my basement but am concerned about increasing the possibility of rotting wood joists:The existing joists sit on a…Read MoreGreenBuildingAdvisor

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