| 3.1.13. |
Interior Finish |
| 3.1.13.1. |
Interior Finishes, Furnishings and Decorative Materials
- Except as otherwise provided by this Subsection, interior finishes, furnishings and decorative materials shall conform to Section 2.3. of Division B of the NFC.
- Interior finish material shall include any material that forms part of the interior surface of a floor, wall, partition or ceiling, including
- interior cladding of plaster, wood or tile,
- surfacing of fabric, paint, plastic, veneer or wallpaper,
- doors, windows and trim,
- lighting elements such as light diffusers and lenses forming part of the finished surface of the ceiling, and
- carpet material that overlies a floor that is not intended as the finished floor.
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| 3.1.13.2. |
Flame-Spread Rating
- Except as otherwise required or permitted by this Subsection, the flame-spread rating of interior wall and ceiling finishes, including glazing and skylights, shall be not more than 150 and shall conform to Table 3.1.13.2.
Table 3.1.13.2.
Flame-Spread Ratings
Forming Part of Sentence 3.1.13.2.(1)
Notes to Table 3.1.13.2.:
(1) See Articles 3.1.13.8. and 3.1.13.10.
- Except as permitted by Sentence (3), doors, other than those in Group A, Division 1 occupancies, need not conform to Sentence (1) provided they have a flame-spread rating not more than 200. (See Note A-3.1.13.2.(2).)
- Doors within a dwelling unit need not conform to Sentences (1) and (2).
- Up to 10% of the total wall area and 10% of the total ceiling area of a wall or ceiling finish that is required by Sentence (1) to have a flame-spread rating less than 150 is permitted to have a flame-spread rating not more than 150, except that up to 25% of the total wall area of lobbies described in Sentence 3.4.4.2.(2) is permitted to have a flame-spread rating not more than 150.
- Except in the case of Group A, Division 1 occupancies, combustible doors, skylights, glazing and light diffusers and lenses shall not be considered in the calculation of wall and ceiling areas described in Sentence (4).
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| 3.1.13.3. |
Bathrooms in Residential Suites
- The flame-spread rating of interior wall and ceiling finishes for a bathroom within a suite of residential occupancy shall be not more than 200.
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| 3.1.13.4. |
Light Diffusers and Lenses
- The flame-spread rating of combustible light diffusers and lenses in all occupancies other than Group A, Division 1 is permitted to be more than the flame-spread rating limits required elsewhere in this Subsection, provided the light diffusers and lenses
- have a flame-spread rating not more than 250 and a smoke developed classification not more than 600 when tested in conformance with CAN/ULC-S102.2, "Test for Surface Burning Characteristics of Flooring, Floor Coverings, and Miscellaneous Materials and Assemblies,"
- fall to the bottom of the test apparatus before igniting when tested in conformance with CAN/ULC-S102.3, "Fire Test of Light Diffusers and Lenses,"
- are not prevented from falling from the ceiling by construction located beneath the elements, and
- are not used in a corridor that is required to be separated from the remainder of the building by a fire separation or in an exit shaft unless individual diffusers or lenses are not more than 1 m2 in area and are not less than 1.2 m apart.
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| 3.1.13.5. |
Skylights
- Individual combustible skylights in a corridor that is required to be separated from the remainder of the building by a fire separation shall be not more than 1 m2 in area and not less than 1.2 m apart.
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| 3.1.13.6. |
Corridors
- Except as permitted by Sentences (2) and (3), the flame-spread rating shall be not more than 75 for the interior wall finish of
- a public corridor,
- a corridor used by the public in an assembly occupancy, or
- a corridor serving classrooms.
- The flame-spread rating for corridors specified in Sentence (1) is permitted to be waived, provided the flame-spread rating is not more than
- 25 on the upper half of the wall, and
- 150 on the lower half of the wall.
- Where the floor area is sprinklered throughout, the flame-spread ratings for corridors specified in Sentences (1) and (2) shall be not more than 150.
- The flame-spread ratings specified in Sentences (1), (2) and (3) apply to occupancies in the corridor as well as to the corridor itself.
- Except as provided in Sentence (6), the interior ceiling finish of corridors and occupancies referred to in Sentences (1) and (4) shall have a flame-spread rating not more than 25.
- Where the floor area is sprinklered throughout, the flame-spread rating of the interior ceiling finish of corridors and occupancies referred to in Sentences (1) and (4) shall be not more than 150.
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| 3.1.13.7. |
High Buildings
- Except as permitted by Sentences (2) to (4), the interior wall, ceiling and floor finishes in a building regulated by the provisions of Subsection 3.2.6. shall conform to the flame-spread rating requirements in Articles 3.1.13.2. and 3.1.13.11. and to the flame-spread rating and smoke developed classification values in Table 3.1.13.7.
Table 3.1.13.7.
Flame-Spread Rating and Smoke Developed Classification in High Buildings
Forming Part of Sentence 3.1.13.7.(1)
Notes to Table 3.1.13.7.:
(1) See Article 3.1.13.4. for lighting elements.
(2) Other requirements of this Part apply.
- Except for a building of Group B major occupancy and elevator cars, the flame-spread rating and smoke developed classification of interior wall, floor and ceiling finishes need not conform to the values in Table 3.1.13.7., provided the building is sprinklered.
- Trim and millwork in an exit stairway, a vestibule to an exit stairway, a lobby described in Sentence 3.4.4.2.(2), or a corridor not within a suite need not conform to the flame-spread rating and smoke developed classification requirements of Sentence (1) provided they have
- a flame-spread rating not more than 150,
- a smoke developed classification not more than 300, and
- an aggregate area not more than 10% of the area of the wall or ceiling on which they occur.
- A door serving an exit stairway, a vestibule to an exit stairway, a lobby described in Sentence 3.4.4.2.(2), or a corridor not within a suite need not conform to the flame-spread rating and smoke developed classification requirements of Sentence (1) provided
- it has a flame-spread rating not more than 200,
- it has a smoke developed classification not more than 300, and
- the aggregate area of all doors is not more than 10% of the area of the wall in which they are located.
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| 3.1.13.8. |
Noncombustible Construction
- In a building required to be of noncombustible construction,
- the flame-spread ratings required by Subsection 3.1.5. shall apply in addition to the requirements in this Subsection, and
- the flame-spread ratings for exits in this Subsection shall also apply to any surface in the exit that would be exposed by cutting through the material in any direction, except that this requirement does not apply to doors, heavy timber construction in a sprinklered building and fire-retardant-treated wood.
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| 3.1.13.9. |
Underground Walkways
- Except for paint, the interior wall and ceiling finishes of an underground walkway shall be of noncombustible materials.
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| 3.1.13.10. |
Exterior Exit Passageway
- The wall and ceiling finishes of an exterior exit passageway that provides the only means of egress from the rooms or suites it serves, including the soffit beneath and the guard on the passageway, shall have a flame-spread rating not more than 25, except that a flame-spread rating not more than 150 is permitted for up to 10% of the total wall area and for up to 10% of the total ceiling area.
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| 3.1.13.11. |
Elevator Cars
- The wall and ceiling surfaces of elevator cars shall have a flame-spread rating not more than 75.
- The wall, ceiling and floor surfaces of elevator cars shall have a smoke developed classification not more than 450.
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