Should he insulate the attic? My son had an energy audit done on their 1920s colonialAttic is largely floored over what appears to be vermiculite perhaps some added celluloseVery little venting up there, only the gable windows (no soffit or ridge vents)The company that did the audit recommends he insulate the attic, turn it into heated spaceThis would mean putting insulation up against the roof, and on the walls at the roof ends.Does this make sense to forum experts? I thought the roof needed ventilation or it would deteriorate rapidly.
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Couple of answers in one; the wonderful 1920’s home was probably floored before it was insulated wellAny of the older insulation that was installed years gone by has most likely settled i.ecompacted and compacted insulation looses some of it’s “R” value and more insulation should be installed ( blown-in or bats your choice.) but it’s floored now and that makes for a lot of work unless you don’t plan to store things in the atticOne serious problem, the old insulation could also have asbestoses in it? If you plan on messing with it have it testedInsulation on the ceiling of the attic a bit over kill, I believe you could do about the same thing if you vented the attic area better i.esoffit ridge vents electric roof vent to let the hot air outIt’s heat build-up in the attic that shortens the life of the shinglesYou’ve seen them before, the shingles start bowing / curling up at the ends, that’s to much heat in the atticHomes old or new sometimes you just need to throw a little money at them.
