Mich. Admin. Code R. 400.11209 - Interior finishes
Rule 209.
(1) In
new construction, additions, conversions, renovations, or remodeling, interior
finish classification shall be of the basic material used without regard to
subsequently applied paint or other covering in an attempt to meet the
classification. The basic material shall be a minimum of class B in a means of
egress and a minimum of class C in other areas. All of the following provisions
also apply to new construction, additions, conversions, renovations, and
remodeling:
(a) In a portion of a building
not used by campers, the interior finish may be less than required by these
rules if a 1-hour fire separation exists between the camper-occupied area and
the non-camper-occupied area. Any door openings in the 1-hour separation shall
be protected with B labeled fire door and frame assemblies.
(b) Interior finish material that is more
hazardous than class C material is not permitted.
(c) Interior finish materials in basements
occupied by campers shall be a minimum of class B throughout.
(d) Prefinished plywood or paneling of
minimum 1/4 inch thickness with proven class A, B, or C interior finish
classification may be applied to studs. Prefinished plywood or paneling less
than 1/4 inch thick with a proven A, B or C interior finish classification
shall be installed on a noncombustible backer. Standard lath and plaster or
drywall is acceptable as an interior finish anywhere.
(2) Existing licensed organizations with
buildings having existing interior finishes that do not comply with those
specified in subrule (1) of this rule may have those finishes coated in
accordance with the following conditions:
(a)
The unapproved finish is applied directly to a noncombustible
backing.
(b) The unapproved finish
is not furred out more than 1-inch from the noncombustible backing.
(c) An approved fire-retardant coating is
used, which has been tested for use on the applicable finish, meets the
required interior finish rating, and is applied in accordance with its
listing.
Notes
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