What Is ICRA in Construction? Infection Control Explained

ICRA stands for Infection Control Risk Assessment. It is a formal process used during construction and renovation in or near healthcare facilities to prevent the spread of airborne contaminants, dust, and pathogens to patients, staff, and sterile areas. If you are renovating a medical office, dental clinic, or any space inside or adjacent to a healthcare building in Ontario, ICRA protocols will likely apply to your project.

When ICRA Is Required

ICRA is required whenever construction activity could generate dust, debris, or airborne particles in a building that provides patient care. This includes:

• Renovations inside hospitals, clinics, long-term care homes, and ambulatory care centres
• Construction in buildings with mixed uses where healthcare tenants are present
• Medical office renovations in multi-tenant buildings with shared HVAC systems
• Dental office build-outs in medical plazas
• Any demolition, drywall work, or ceiling work in a healthcare-adjacent space

The requirement is driven by CSA Z317.13 (Infection control during construction, renovation, and maintenance of health care facilities) in Canada, which outlines the risk assessment matrix and containment measures.

How ICRA Works: The Risk Matrix

An ICRA assessment evaluates two factors:

Construction Activity Type

• Type A: Inspection and non-invasive work. No dust generated.
• Type B: Small-scale, short-duration work. Minor dust.
• Type C: Major demolition, construction, or renovation. Significant dust and debris.
• Type D: Large-scale, long-duration projects requiring heavy demolition or construction.

Patient Risk Group

• Group 1: Low risk (offices, waiting areas with no direct patient care)
• Group 2: Medium risk (outpatient clinics, rehab areas)
• Group 3: Medium-high risk (emergency departments, labs, procedure rooms)
• Group 4: Highest risk (operating rooms, ICU, immunocompromised patient areas)

The intersection of activity type and risk group determines the required containment measures, which range from Class I (minimal) to Class IV (maximum containment).

What ICRA Containment Looks Like on Site

For most medical office renovations in multi-tenant buildings, Class II or Class III containment is required. This typically includes:

• Dust barriers: Full-height polyethylene or drywall barriers sealed at all edges with tape
• Negative air pressure: HEPA-filtered negative air machines maintaining negative pressure inside the construction zone so dust cannot migrate outward
• Walk-off mats: Sticky mats at barrier entry points to trap construction dust on workers' boots
• Sealed HVAC: Sealing or isolating HVAC diffusers and returns within the construction zone to prevent contaminated air from entering the building system
• Debris removal protocols: Covered carts, sealed bags, and designated routes for debris removal that avoid patient care areas
• Daily monitoring: Pressure differential checks and visual inspections of barrier integrity

How ICRA Affects Your Renovation Budget

ICRA adds cost to a medical renovation project. The typical premium is $5-15 per square foot depending on the classification level:

• Class II: $5-8/sq ft (barriers, mats, sealed openings)
• Class III: $8-12/sq ft (adds negative air, HEPA filtration, daily monitoring)
• Class IV: $12-20/sq ft (maximum containment, anteroom, continuous monitoring)

For a 3,000 sq ft medical office renovation at Class III, expect $24,000-36,000 in ICRA-related costs. This covers materials, equipment rental, and the additional labour for maintaining containment throughout construction.

How ICRA Affects Your Timeline

ICRA does not necessarily extend the construction timeline, but it changes the sequencing. Barriers must be erected before any demolition begins, and they remain in place until final cleaning is complete. The setup and teardown process typically adds 2-3 days at each end of the project.

Daily monitoring and inspection requirements add a small amount of time to each workday but do not significantly affect the overall schedule.

Choosing a Contractor With ICRA Experience

Not all commercial renovation contractors have experience with ICRA protocols. When selecting a contractor for a medical renovation, ask:

1. How many ICRA-controlled projects have you completed in the past 12 months?
2. Do you own negative air machines and HEPA filtration equipment, or do you rent them?
3. Who on your team is responsible for daily containment monitoring?
4. Can you provide references from healthcare facility managers?

VNG has completed medical office renovations under ICRA protocols across the GTA, including projects in active multi-tenant medical buildings. Contact us to discuss your medical renovation project.