Cost to Install Splash Guards at Gutter Valleys in Ottawa

Adding a splash guard at a gutter valley on your Ottawa roof is a relatively inexpensive fix that typically costs $75 to $250 per location, depending on the material, the height of the splash guard, and whether your contractor needs to address any underlying slope or sizing issues at the same time.

Why Gutter Valleys Need Splash Guards in Ottawa

A gutter valley is where two roof planes meet and direct concentrated water flow into a single point on your eavestrough. During heavy Ottawa thunderstorms — which can dump 25 to 50 millimetres of rain per hour in summer — the water velocity coming off a valley is fast enough to shoot right over the top of a standard 5-inch K-style gutter. This is called overshooting, and it is one of the most common complaints Ottawa homeowners have after summer storms. The water cascades over the gutter edge, saturates the fascia and soffit, and pools against the foundation below. In older Ottawa neighbourhoods like the Glebe, Westboro, and Sandy Hill where homes have complex roof geometries with multiple valleys, this problem is especially prevalent.

A splash guard is a simple metal deflector installed on the outer edge of the eavestrough directly below the valley point. It extends the effective height of the gutter by 2 to 4 inches, catching the fast-moving water and directing it down into the trough. Splash guards are typically made from the same aluminum as your eavestroughs and can be colour-matched to blend in.

The material cost for a splash guard is minimal — $10 to $30 per piece — but the labour to install it properly is where the cost lies. A contractor needs to position the guard precisely where the valley water hits, rivet or screw it to the gutter lip, and seal the attachment points to prevent leaks. If your eavestrough at the valley point is also undersized, the contractor may recommend upgrading that section to 6-inch K-style gutter, which costs $15 to $25 per linear foot for the replacement section and adds significant capacity.

Many Ottawa contractors will install splash guards as part of a broader service call for eavestrough maintenance or repair. If the contractor is already on-site for a cleaning or hanger repair, adding a splash guard might cost as little as $50 to $100 per location for the incremental work. As a standalone service call, expect to pay the minimum trip charge of $100 to $175 plus the splash guard installation, bringing the total to $150 to $250.

Before installing a splash guard, it is worth checking that the eavestrough below the valley has proper slope toward the nearest downspout. A splash guard prevents overshooting, but if the gutter is flat or sagging at the valley point, water will pool there and eventually overflow anyway. Correcting the slope at the same time as adding the splash guard ensures a complete fix.

If your roof has multiple valleys causing overshooting, a contractor can assess all problem points in a single visit. Browse eavestrough professionals in the Ottawa Construction Network directory at justynrookcontracting.com to find someone who can evaluate your specific roofline and recommend the right solution.