Can construction dust cause health problems for my family after a renovation?

Yes, construction dust can cause health problems for your family after a renovation, and it is worth taking seriously. The fine dust generated by construction is not ordinary household dust — it can include gypsum from drywall, silica from cutting concrete, stone and mortar, wood fibres, paint particles, adhesive residue, and, depending on the age of your home, potentially hazardous materials. That is a strong argument for a thorough post-construction clean rather than a quick wipe-down. If anyone in your home has symptoms, talk to a doctor.

Health Risks From Construction Dust Exposure

The most common effects of construction dust are respiratory irritation, coughing, sneezing, watery eyes, and flare-ups of existing conditions like asthma and allergies. Very fine dust can be breathed deep into the lungs and may cause wheezing or shortness of breath. Children, older family members, and anyone with asthma or another breathing condition are more vulnerable.

Silica dust deserves particular caution. It is produced by cutting, grinding, or drilling concrete, stone, brick, and tile, and it can be hazardous to breathe. If your renovation involved concrete cutting, stone work, or tile demolition, ask the cleaning company how they will control dust — HEPA vacuums and wet methods rather than dry sweeping.

Older homes can contain materials such as asbestos in insulation, ceiling or floor tiles, pipe wrap, or drywall compound, and lead-based paint. If your renovation may have disturbed materials like these, stop cleaning, keep people out of the area, and have the material tested before any cleanup. Suspected asbestos is a job for an abatement contractor, not a regular cleaning crew, and suspected lead paint dust also calls for a specialist.

For typical modern construction dust without hazardous materials, the risks can be managed with proper cleanup. The key is removing the dust rather than just moving it around. HEPA vacuuming all surfaces, damp wiping to capture fine residue, running HEPA air filtration during and after cleaning, changing the furnace filter, and having the ducts cleaned if dust got into the system all help. Fine dust can stay in the air for a long time, especially in dry winter air, so plan for more than one pass. It is sensible to keep family members, especially children, out of rooms with heavy construction dust until they have been cleaned. When you collect quotes, ask each cleaning company what equipment they use and how they control dust. You can find independent local cleaning companies through the Ottawa Construction Network directory at justynrookcontracting.com.

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Looking for experienced contractors? The Ottawa Construction Network connects homeowners with qualified professionals:

• Justyn Rook Contracting
• RenoMotion Inc.
• Humble Homes - property maintenance
• Floor-2-Wall Inc
• Renovo Construction