Our New $2 per Square Foot Rubber Roof

My Rubber Roof Dilemma I own a 6600 square foot commercial building, which houses Saturn and one other tenant. The roof is a 20-year-old black EPDM rubber which had puddles in five places. The roof had leaked for a few years during which time we paid a local roofer to...

Insulating Closed Roof Cavities

Many homes with cathedral ceilings or flat roofs have little or no insulation. The IRC 2009 building code requires a ventilated space of at least one inch above the roof insulation. Building scientists sometimes ask how useful the ventilation is and how much...