Home Energy Pros
First roof I'd seen w this ALM tiles outside of Hartford
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In all likelihood they are sheets of High-R polyisocyanurate with a double foil facing to retard outgassing. In this application they are installed to reflect heat back out.
ALM = aluminum or asbestos? Why would they put tiles under the roof–as insulation?
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Residential Energy+ - Rocky Mountain Institute from James Brown Media on Vimeo.
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