When should I replace weatherstripping around windows?

You should replace weatherstripping around windows when you notice drafts, visible damage, or when it no longer compresses properly when the window is closed. Most weatherstripping lasts 5-10 years depending on the material and Ottawa's harsh freeze-thaw cycles.

Signs it's time to replace include visible cracks or tears in the material, gaps when the window is closed, increased heating bills, or if you can feel air movement around the window frame. In Ottawa's climate, weatherstripping takes a beating from temperature swings that can range from -30°C in winter to +35°C in summer, causing rubber and foam materials to become brittle and lose their seal.

The best time for replacement is late summer or early fall, before Ottawa's heating season begins. This gives you time to complete the work in comfortable weather and ensures your home is sealed before winter arrives. Spring is also good timing if you're doing a comprehensive home maintenance check after winter damage.

Different materials have varying lifespans in our climate. Foam tape weatherstripping is cheapest but typically lasts only 1-2 years. Rubber gaskets last 3-5 years, while quality vinyl or silicone weatherstripping can last 7-10 years. For older Ottawa homes with original windows, you might need to replace weatherstripping every 3-5 years due to settling and wear.

Professional assessment is recommended if you're experiencing significant drafts despite recent weatherstripping replacement, as this could indicate window frame issues, settling, or the need for window replacement. Poor weatherstripping can increase heating costs by 10-15% in Ottawa's climate, making replacement a worthwhile investment.

Installation timing should avoid extreme temperatures - the adhesive on self-stick weatherstripping doesn't bond well below 10°C or above 30°C. If you're planning other window work or exterior renovations, coordinate weatherstripping replacement to maximize efficiency and minimize disruption to your home's thermal envelope.

For comprehensive window assessments or if weatherstripping replacement reveals larger issues with your windows, contact Justyn Rook Contracting for a professional evaluation.