N.M. Admin. Code § 14.7.5.14 - STUCCO/PLASTER
A. Interior and
exterior surfaces of bale walls shall be protected from mechanical damage,
flame, animals, and prolonged exposure to water. Bale walls adjacent to bath
and shower enclosures shall be protected by a moisture barrier.
B. Where bale walls abut other material
(wood, concrete, steel, etc.) galvanized expanded metal lath shall be used to
cover the junction. Expanded metal lath shall extend a minimum of six inches
(6") onto the bales and shall be securely fastened to the bale.
C. All straw bale shall have exterior walls
plastered with a minimum thickness of seven-eighths inch (7/8") portland cement
plaster with or without stucco netting. The following two step process applies
to the first coat of portland cement plaster applied to the vertical surface of
the bales:
(1) the first coat of plaster
shall be thoroughly worked into the bale surface; and
(2) the second coat of plaster shall be
applied over the first coat and "scratched" to provide bonding for the
subsequent layer of plaster.
D. Where wire mesh is used, wire mesh shall
be a minimum of 17 gauge wire mesh by one and one half inch (1 1/2") opening
and shall be securely attached to the exterior wall surface. Mesh fasteners
shall have a maximum spacing of sixteen inches (16") from each other.
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