How do I reduce drafts in my home?

Reducing drafts in your Ottawa home starts with identifying air leaks around windows, doors, and penetrations, then sealing them with weatherstripping, caulking, or spray foam. Most draft issues can be addressed with simple DIY solutions, though some may require professional assessment.

Common Draft Sources and Solutions

The most effective approach is to systematically check your home's envelope. Start with windows and doors - these are the biggest culprits in Ottawa homes, especially older properties in neighborhoods like the Glebe or Centretown. Replace worn weatherstripping around door frames and window sashes. For windows, consider adding plastic film insulation kits during winter months, which can reduce heat loss by up to 25%. If your windows are single-pane or very old, upgrading to Energy Star-rated double or triple-pane units will dramatically improve comfort and energy efficiency.

Electrical outlets and switches on exterior walls are notorious draft sources. Remove the cover plates and install foam gaskets behind them - a $10 solution that takes minutes per outlet. Check around baseboards and crown molding where walls meet floors and ceilings. Use paintable acrylic caulk to seal gaps smaller than ¼ inch, or expanding foam for larger openings.

Basement and Attic Areas

In Ottawa's climate with our harsh freeze-thaw cycles, basement rim joists are major draft sources. These are where your floor joists meet the foundation wall. Seal these areas with spray foam or rigid foam board. The attic hatch should have weatherstripping and insulation on top. Check around plumbing and electrical penetrations - anywhere pipes or wires enter your home creates potential air leaks.

Professional Assessment Options

For comprehensive draft reduction, consider hiring an energy auditor to perform a blower door test. This pressurizes your home to identify all air leaks, including hidden ones. Many Ottawa contractors offer this service for $300-500, and it often qualifies for rebates through Enbridge's Home Efficiency Rebate program. The test will show exactly where your home is losing conditioned air.

Ottawa-Specific Considerations

Our climate demands particular attention to ice dam prevention - proper attic sealing and insulation prevents warm air from melting roof snow unevenly. The City of Ottawa's building department can provide guidance on current insulation standards if you're planning major upgrades. Remember that our frost line extends 4 feet deep, so basement foundation cracks can create significant drafts and should be professionally sealed.

When to Call Professionals

While most weatherstripping and caulking is DIY-friendly, call professionals for structural gaps, foundation cracks, or HVAC ductwork issues. If you're finding drafts around electrical panels or gas lines, these require licensed trades - ESA-certified electricians for electrical work and TSSA-certified technicians for gas connections.

Start with the simple fixes first - you'll often solve 80% of draft problems with weatherstripping, caulking, and outlet gaskets, typically spending under $200 for materials.