....TO GIVE YOU AN EXACT NUMBER [AND I REALLY DON'T KNOW HOW THEY ARRIVED AT IT]....I AM QUOTING HERE "40% LOSS FROM INFILTRATION OF AIR INTO THE HOUSING UNITE DUE TO VOIDS IN THE EXTERIOR"....SOME ARE OF THE OPINION-AND AGAIN HERE I DO QUOTE "THE VOIDS IN THE EXTERIOR SERVE DUAL PURPOSE BY LETTING OUT THE MOISTURE AND ACCUMULATED WATER VAPOR OUT WHEN THE ENVIRONMENT IS FAVORABLE.....I'll FINISH LATER I HAVE A CLIENT TO SEE AT THE HOSPITAL RIGHT NOW....t-a-y-l ..... geofkaye
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