Code Library › Volume 1 › Section 3.1 — General

PART 3 — FIRE PROTECTION, OCCUPANT SAFETY AND ACCESSIBILITYUpdated for the 2024 Ontario Building Code

3.1.5.2.Minor Combustible Components

(1) The following minor combustible components are permitted in a building required to be of noncombustible
     construction:
     (a) paint, (See also Clause 3.1.13.1.(2)(b))
     (b) self-adhesive tapes, mastics and caulking materials including foamed plastic air sealants, applied to provide a seal
          between the major components of exterior wall construction, (See also Article 3.6.4.3. for limits on the use of
          combustible materials in plenum spaces),

  (c)   firestops and fire blocks conforming to Sentence 3.1.9.1.(1) Article 3.1.11.7.,
  (d)   tubing for pneumatic controls provided it has an outside diameter not more than 10 mm,
  (e)   adhesives, vapour barriers and sheathing papers,
  (f)   electrical outlet and junction boxes,
  (g)   wood blocking intended for the attachment of window elements within exterior wall assemblies,
  (h)   wood blocking within wall assemblies intended for the attachment of handrails, fixtures, and similar items mounted
        on the surface of the wall, and
  (i)   similar minor components.

← Previous3.1.5.1. Noncombustible Materials (See Note A-3.1.4.1.(1)Next →3.1.5.3. Combustible Roofing Materials

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Code text is reproduced for reference from the Ontario Building Code (O. Reg. 163/24, 2024 Building Code Compendium). This page is provided for general information and is not an official copy. Always verify requirements against the official Ontario Building Code and confirm with your local building department.

3.1.5.2.Minor Combustible Components

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