Renovation in an occupied home — where the family is living throughout the construction process — requires specific safety measures that fully-vacated renovation doesn’t need. Getting these right protects your family’s health and the contractor’s compliance.
Dust Control: The Underestimated Risk
Construction dust — from drywall cutting, sanding, demolition, and concrete work — contains crystalline silica, which is a respiratory hazard with cumulative health effects. Fine particles penetrate to the alveoli and are not expelled.
Practical measures:
- Seal the construction zone from living areas with 6-mil poly sheeting and tape
- Cover HVAC vents in the work zone and use a dedicated air scrubber with HEPA filtration during and after dusty work
- Require the contractor to clean up dust daily, not weekly
- Children and anyone with respiratory conditions should not be in dust-affected areas during work
Lead Paint (Pre-1978 Homes)
Toronto homes built before 1978 may have lead paint. Sanding or demo of lead paint creates hazardous airborne particles. Ontario’s environmental legislation requires specific handling for lead paint renovation:
- Testing before work begins (lead test kits: $15–$30 at hardware stores)
- RRP (Renovation, Repair, and Painting) practices for lead-positive surfaces
- Proper disposal of lead-containing debris
Asbestos (Pre-1985 Homes)
Asbestos was used in: floor tiles (pre-1985 vinyl floor tiles are frequently asbestos-containing), textured ceiling coatings (popcorn ceilings), drywall compound (pre-1977 in some products), pipe insulation, and vermiculite insulation.
Any renovation affecting suspect materials in pre-1985 Ontario homes should include asbestos testing by an accredited firm before demo begins.
Carbon Monoxide During Renovation
Gas work disconnection and reconnection can introduce CO hazards if done improperly. Ensure CO alarms are functional during any gas work and that the HVAC system is properly recommissioned before occupying the space.
The Contractor’s Responsibilities
Competent Ontario contractors know these requirements. A contractor who dismisses asbestos and lead paint concerns or doesn’t implement basic dust control in an occupied home is not one you want in your home.
Ontario renovation safety discussions at home.renovation.reviews.
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