Canadian building code question

What fire stopping requirements apply to penetrations in fire separations in Canada?

Fire stopping requirements for penetrations depend on the fire-resistance rating of the separation being penetrated, the type and size of the penetration, the service passing through, the tested assembly or system used, and how the province adopts or amends the national model code.

Every pipe, duct, cable, or conduit that passes through a fire separation creates a potential weak point. The NBC requires that these penetrations be sealed with tested fire stop systems that maintain the integrity and insulation performance of the separation. The details vary by penetration type, separation rating, and provincial adoption.

What to check first

  • Identify the fire-resistance rating of the separation being penetrated because the fire stop system must be compatible with that rating.
  • Determine the type and size of the penetrating service because different services require different tested fire stop systems.
  • Verify that the fire stop system has been tested to the applicable standard and is installed according to the listing.

Jurisdiction notes

National baseline

Start with the NBC provisions that require fire stopping of penetrations through fire separations and the referenced testing standards.

Province and edition check

Confirm how the province adopts the NBC fire stopping requirements and whether additional conditions or referenced standards apply.

Project-specific variables

The separation rating, penetrating service type, annular space size, combustibility of the penetrating item, and whether the separation is a fire wall versus a fire separation can all affect the requirement.

Work through it in this order

  1. Identify the fire-resistance rating and type of the fire separation being penetrated.
  2. Determine the type, size, and material of the service passing through the separation.
  3. Look up the NBC provisions governing fire stopping of penetrations and the referenced testing standards.
  4. Verify that a listed and tested fire stop system exists for the specific penetration condition, and confirm provincial adoption.

Common questions

Can any sealant be used to fire stop a penetration?

No. The fire stop system must be tested and listed for the specific penetration condition, separation type, and rating. Generic sealants without a fire test listing do not meet code requirements.

Does every penetration through a fire separation need fire stopping?

Generally yes. The NBC requires that penetrations through fire separations be sealed to maintain the fire-resistance rating, with limited exceptions for certain protected conditions.

Why does the specific penetration condition matter?

Because fire stop systems are tested for specific combinations of separation type, service type, service size, and annular space. Using a system outside its tested conditions may not provide the required protection.