3.1.13. Interior Finish — OBC 2006 (in force 31 December 2006 to 1 January 2014)

3.1.13. — Interior Finish

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3.1.13.1. — Interior Finish Description

(1) Interior finish material shall include any material that forms part of the interior surface of a floor, wall, partition or ceiling, including,

(a) interior cladding of plaster, wood or tile,

(b) surfacing of fabric, paint, plastic, veneer or wallpaper,

(c) doors, windows and trim,

(d) lighting elements, such as light diffusers and lenses forming part of the finished surface of the ceiling, and

(e) 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

(1) 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.

(2) 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.

(3) Doors within a dwelling unit need not conform to Sentences (1) and (2).

(4) 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.

(5) 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).

Editor's note

The notes to Table 3.1.13.2. are reproduced here as filed in O. Reg. 350/06. The consolidated e-Laws text applies editorial formatting changes to these notes that were not enacted by any regulation; this map preserves the notes as filed. The differences are: the heading "Notes to Table 3.1.13.2.:" appears in bold as filed and is rendered in regular weight on e-Laws; a space follows each note number ((1) and (2)) as filed, which e-Laws omits; and the reference in note (1) reads "Articles 3.1.13.8. and 3.1.13.10" as filed, to which e-Laws adds a trailing period ("3.1.13.10.").

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Table 3.1.13.2. Flame-Spread Ratings Forming Part of Sentence 3.1.13.2.(1)


Column 1	Column 2	Column 3
Occupancy, Location or Element	Maximum Flame-Spread Rating for Walls and Ceilings
	Sprinklered	Not Sprinklered
Group A, Division 1 occupancies, including doors, skylights, glazing and light diffusers and lenses	150	75
Group B occupancies	150	75⁽²⁾
Exits⁽¹⁾	25	25
Lobbies described in Sentence 3.4.4.2.(2)	25	25
Covered vehicular passageways, except for roof assemblies of heavy timber construction in such passageways	25	25
Vertical service spaces	25	25

Notes to Table 3.1.13.2.:

⁽¹⁾ See Articles 3.1.13.8. and 3.1.13.10

⁽²⁾ Group B occupancies are required to be sprinklered. See Part 11 for renovations of existing non-sprinklered Group B occupancies.

3.1.13.3. — Bathrooms in Residential Suites

(1) The flame-spread rating of interior wall and ceiling finishes for a bathroom in a suite of residential occupancy shall be not more than 200.

(2) Plumbing fixtures shall have a flame-spread rating not more than 200.

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3.1.13.4. — Light Diffusers and Lenses

(1) 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,

(a) 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”,

(b) fall to the bottom of the test apparatus before igniting when tested in conformance with ULC-S102.3-M, “Fire Test of Light Diffusers and Lenses”,

(c) are not prevented from falling from the ceiling by construction located beneath the elements, and

(d) 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 1 200 mm apart.

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3.1.13.5. — Skylights

(1) 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 1 200 mm apart.

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3.1.13.6. — Corridors

(1) 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) a public corridor,

(b) a corridor used by the public in,

(i) an assembly occupancy, or

(ii) a care or detention occupancy,

(c) a corridor serving classrooms, or

(d) a corridor serving sleeping rooms in a care or detention occupancy.

(2) The flame-spread rating limit specified in Sentence (1) does not apply to corridors referred to in Sentence (1) provided the flame-spread rating is not more than,

(a) 25 on the upper half of the wall, and

(b) 150 on the lower half of the wall.

(3) The flame-spread rating limits specified in Sentences (1) and (2) for corridors referred to in Sentence (1) does not apply to a corridor in which the flame-spread rating is not more than 150 provided the floor area is sprinklered.

(4) The flame-spread rating limits specified in Sentences (1), (2) and (3) apply to occupancies in the corridor as well as to the corridor itself.

(5) Except in a floor area that is sprinklered and as permitted 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.

(6) The flame-spread rating limits specified in Sentence (5) do not apply to a corridor in which the flame-spread rating is not more than 150 provided the floor area is sprinklered.

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3.1.13.7. — High Buildings

(1) Except as permitted by Sentences (2) and (3), the interior wall, ceiling and floor finishes in a building regulated by the provisions of Subsection 3.2.6.v1 shall conform to the flame-spread rating requirements in Articles 3.1.13.2. to 3.1.13.6. and to the flame-spread rating and smoke developed classification values in Table 3.1.13.7.

(2) 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 and the sprinkler system is electrically supervised in conformance with Sentence 3.2.6.4.(1)v1.

(3) Trim, millwork and doors 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) a flame-spread rating not more than 150,

(b) a smoke developed classification not more than 300, and

(c) an aggregate area not more than 10% of the area of the wall or ceiling on which they occur.

(4) Except as permitted in Sentences (5) to (7), plumbing fixtures in a building regulated by the provisions of Subsection 3.2.6.v1 shall have a smoke developed classification not more than 300.

(5) A plumbing fixture that is not located in a Group B occupancy need not comply with Sentence (4) if the building is sprinklered.

(6) A plumbing fixture may have a smoke developed classification more than 300 but not more than 500 if,

(a) it is in a room where the wall surfaces have a smoke developed classification not more than 200, and

(b) it is located in,

(i) a Group C occupancy, or

(ii) a Group B occupancy and the building is sprinklered.

(7) A therapeutic bathing system in a Group B occupancy need not comply with Sentence (4) if the room in which it is located,

(a) does not open directly into patients’ or residents’ sleeping rooms, and

(b) is sprinklered.

Editor's note

The note to Table 3.1.13.7. is reproduced here as filed in O. Reg. 350/06. The consolidated e-Laws text applies editorial formatting changes that were not enacted by any regulation; this map preserves the note as filed. The differences are: the heading "Note to Table 3.1.13.7:" appears in bold as filed and is rendered in regular weight on e-Laws, which also adds a trailing period to the table number ("3.1.13.7."); and a space follows each note number ((1) and (2)) as filed, which e-Laws omits.

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Table 3.1.13.7. Flame-Spread Rating and Smoke Developed Classification in a High Building Forming Part of Sentence 3.1.13.7.(1)


Column 1	Column 2	Column 3	Column 4	Column 5	Column 6	Column 7
Location or Element	Maximum Flame-Spread Rating			Maximum Smoke Developed Classification
	Wall Surface	Ceiling Surface ⁽¹⁾	Floor Surface	Wall Surface	Ceiling Surface ⁽¹⁾	Floor Surface
Exit stairways, vestibules to exit stairs and lobbies described in Sentence 3.4.4.2.(2)	25	25	25	50	50	50
Corridors not within suites	⁽²⁾	⁽²⁾	300	100	50	500
Elevator cars and vestibules	25	25	300	100	100	300
Service spaces and service rooms	25	25	25	50	50	50
Other locations and elements	⁽²⁾	⁽²⁾	No limit	300	50	No limit

Note to Table 3.1.13.7:

⁽¹⁾ See Sentence 3.1.13.4.(1) for lighting elements.

⁽²⁾ Other requirements of this Part apply.

3.1.13.8. — Noncombustible Construction

(1) In a building required to be of noncombustible construction,

(a) the flame-spread ratings required by Subsection 3.1.5. shall apply in addition to the requirements in this Subsection, and

(b) 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

(1) 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

(1) 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.

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