Perimeter walls and roof of a barber, cosmetology, or personal grooming facility shall effectively protect the facility from the weather and the entry of insects, rodents, and other animals.
Except as otherwise specified in §§ 301.3, 301.4 and 301.5, the outer openings of a barber, cosmetology, or personal grooming facility shall be protected against the entry of insects and rodents by:
Subsection 301.2 shall not apply if a barber, cosmetology, or personal grooming facility opens into a larger structure, such as a mall, airport, or office building, and the outer openings from the larger structure are protected against the entry of insects and rodents.
Exterior doors used as exits need not be self-closing if they are:
Except as specified in § 301.1 through 301.4, if the windows or doors of a barber, cosmetology, or personal grooming facility, are kept open for ventilation or other purposes the openings shall be protected against the entry of insects and rodents by:
Subsection 301.5 does not apply if flying insects and other pests are absent due to the location of the establishment, the weather, or other limiting conditions.
D.C. Mun. Regs. tit. 25, r. 25-E301