Mueller Pre-Fab - Manual (Page 39)

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Wall InsUlaTIon
Fiberglass blanket insulation is the most common type used, and these instructions pertain to this
type only . One side of the blanket insulation should have a vapor barrier that must face the inside
of the building regardless of whether the insulation is for heating or cooling .
Wall Insulation Installation
Cut the insulation to length allowing an additional 6” or more to facilitate handling . The wall panel
can be used as a guide .
Fiberglass insulation
to outside of building
Vapor barrier to
inside of building
noTe: The insulation must compress between the girt and the wall dring
installation. Insulation too thick or dense to compress adequately will induce
waviness or oil canning in certain types of wall panels.