Blown in fiberglass
I saw some favorable comments regarding blown-in fiberglass (walls) if a good cellulose contractor is not available.
I see “The R-value of blown fiberglass depends on the density; the higher the better. Typical R-values range from 3.2 to 4.2 per inch.” At what density does blown fiberglass reach R4.2/inch? I see Dorsett described dense packed fiberglass as being R41/10.25″ @ 1.8 lbs/ft³.
Q1. Can the big box store fiberglass (Atticat) achieve this?
Q2. Can the blower from the store achieve this density?
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