Fire Stopping – Level 2

This guide outlines the key components and steps for creating Level 2 Fire Stopping Modules, which are essential for maintaining fire compartmentation in buildings.

1. Introduction to Fire Stopping (Level 2)

Fire stopping is a passive fire protection measure designed to seal openings and gaps in fire-rated walls, floors, and ceilings to prevent the spread of fire, smoke, and toxic gases.

Level 2 Fire Stopping typically involves:

• Intermediate fire resistance applications

• More complex penetrations than Level 1

• Compliance with building codes and fire test standards

2. Key Components of Fire Stopping Modules

To create effective fire stopping modules, consider:

A. Materials & Systems

• Fire-rated sealants (intumescent & non-intumescent)

• Firestop mortars & putties

• Fire-resistant boards & wraps

• Pillows & blocks (for larger openings)

• Collars & wraps (for pipes & cables)

B. Common Penetration Types

• Electrical conduits & cables

• Plumbing pipes (metal, plastic, etc.)

• HVAC ducts & dampers

• Structural steel penetrations

C. Fire Test Standards & Compliance

• ASTM E814 / UL 1479 (Fire Tests of Penetration Firestops)

• BS 476 (UK Standards)

• EN 1366 (European Standards)

• Local building codes (e.g., IBC, NFPA)

3. Steps to Create Fire Stopping Modules

Step 1: Assess the Penetration

• Identify the type of barrier (wall, floor, ceiling).

• Measure the size and type of penetration.

• Check fire resistance rating required (e.g., 1hr, 2hr).

Step 2: Select Appropriate Firestop System

• Choose materials based on:

• Type of penetrating item (metal pipe, plastic pipe, cables).

• Size of the opening.

• Required fire and smoke rating.

Step 3: Prepare the Opening

• Clean the area (remove debris, dust, grease).

• Ensure proper fit of firestop materials.

Step 4: Install Firestop System

• Apply sealants, mortars, or wraps as per manufacturer instructions.

• Install collars or pillows if required.

• Ensure full encapsulation of penetrations.

Step 5: Inspection & Certification

• Verify compliance with fire test standards.

• Document installation with photos/reports.

• Conduct smoke and fire tests if necessary.

4. Best Practices for Fire Stopping

✔ Follow manufacturer guidelines for each product.
✔ Avoid mixing incompatible materials (e.g., some sealants degrade plastic pipes).
✔ Regularly inspect and maintain firestop systems.
✔ Train installers on proper techniques.

5. Common Mistakes to Avoid

❌ Using non-fire-rated materials (e.g., standard foam or silicone).
❌ Leaving gaps or incomplete seals.
❌ Ignoring movement in pipes/cables (use flexible firestop solutions).
❌ Failing to document installations for compliance.