How do I repair an eavestrough that has pulled away from a bay window on my Ottawa home?

An eavestrough that has pulled away from a bay window typically indicates either failed hangers, rotted fascia board, or inadequate support for the complex angles around the bay structure. This is a common problem in Ottawa homes, especially after heavy snow loading or ice dam formation that puts extra stress on the mounting points where the eavestrough transitions around the bay window's angled corners.

The repair approach depends on what caused the separation. Start by examining the fascia board behind the pulled-away section — if you can see dark staining, soft spots, or actual rot in the wood, the fascia needs replacement before any eavestrough work. Bay windows create complex roof drainage patterns that can concentrate water flow, and over time this concentrated drainage can saturate and rot the fascia board. Press firmly on the fascia with your finger — healthy wood should feel solid, while rotted fascia will feel spongy or your finger may actually penetrate the surface.

If the fascia is sound, the problem is likely failed or inadequate hangers around the bay window corners. Bay windows require specialized corner pieces and additional hangers because the eavestrough must navigate multiple direction changes while maintaining proper slope toward the downspouts. Ottawa's extreme temperature swings cause significant thermal expansion and contraction in aluminum eavestroughs — a bay window section might expand and contract several millimeters between winter and summer, gradually loosening standard hangers.

For a single-storey bay window with sound fascia, you might attempt a DIY repair by installing new heavy-duty eavestrough hangers specifically designed for corners and complex angles. Use hangers rated for Ottawa's snow loading — look for models that can handle at least 150 pounds per linear foot. Space hangers no more than 18 inches apart around the bay window area, compared to the standard 24-inch spacing on straight runs. Clean out any debris, ensure proper slope toward the nearest downspout, and use high-quality gutter sealant at any seams that may have opened when the section pulled away.

However, bay window eavestrough repairs often require professional expertise because of the complex measurements, specialized corner pieces, and precise slope calculations needed to ensure proper drainage around the angled sections. A poorly repaired bay window eavestrough can create water pooling that leads to ice dam formation, fascia rot, or basement moisture problems. If your home is two storeys, if the fascia shows any signs of rot, or if this is a recurring problem, the safest approach is hiring an experienced contractor.

Professional repair typically costs $300 to $800 for a bay window section, depending on whether fascia replacement is needed and the complexity of the bay configuration. The work is usually completed in one day unless extensive fascia repair is required. You can browse experienced eavestrough contractors through the Ottawa Construction Network directory to get multiple quotes and find someone familiar with bay window drainage challenges.