Installation August 19, 2026 5 min read

Rockfall, Road Closures and Real Lead Times
Planning a Bow Valley Window Project

A Canmore highway sat closed for two months after a rockfall. Here is how mountain access and custom sizing shape window project timelines in the Bow Valley.

If you want new windows in a Canmore home before the first hard freeze, the order needs to be placed now rather than in October.

Manufacturing time is only half of the equation up here. The other half is getting product into the valley and onto a site that may sit at the end of a road nobody controls.

A two month closure on the Canmore Hill

Highway 742, known locally as Spray Lakes Road or the Canmore Hill, closed on June 1, 2026 after a rockfall dropped boulders the size of a small vehicle onto the roadway.

Inspectors later found an imminent risk of further rockfall above the route. Crews had to strip roughly 200 cubic metres of unstable rock and secure the face before traffic could return, with the province targeting a mid August reopening (CBC News).

That stretch mostly carries recreation traffic toward Grassi Lakes and the Goat Creek trailhead, so it did not strand many contractors. It is still a fair picture of how this terrain behaves.

One geotechnical problem held a provincial highway for two and a half months in the middle of the busiest building season of the year.

Why mountain projects need more runway than city ones

Almost nothing here is a stock size

Homes in Canmore, Banff and Exshaw were built to the lot and the view, not to a supplier catalogue.

Gable triangles, tall stairwell glass and wide mountain facing openings are all built to order. Anything in the shaped or oversized category sits in a longer production queue than a standard rectangle, and that gap widens in summer when factories are busiest.

Access is a live variable, not a formality

Freight reaches the Bow Valley on a short list of routes. When one closes for rock scaling, flooding or a collision, delivery windows move and crew travel gets longer.

Add tight lots, steep driveways and limited street frontage in older Canmore neighbourhoods, and material staging becomes part of the schedule rather than an afterthought.

A realistic timeline for a Bow Valley window project

The ranges below are what we use for planning conversations. They are not guarantees, and your product choice and site conditions will move them.

Stage	Plan for	What stretches it
Site measure and written quote	1 to 2 weeks	Multiple elevations, heritage details, strata paperwork
Order confirmation	A few days	Colour and hardware decisions left open
Manufacturing	Several weeks	Custom shapes, triple glazing, non standard exterior colours
Freight into the valley	Days, sometimes longer	Highway closures, weather, consolidated loads
Installation	1 to 3 days for most homes	Upper floor access, rot repair behind the old frame, large fixed glass needing extra hands

Read that table backwards from your deadline. If you want the work finished before consistent overnight freezing, the measure appointment belongs in late summer.

Condo and townhouse buildings need extra notice

A large share of Canmore housing sits inside a condominium corporation, and the board usually controls anything that changes the exterior appearance.

Approval cycles, matching frame colours across units and coordinating lift or scaffold access all happen before a single unit is ordered. We build that into the schedule on multi unit and condo projects instead of discovering it halfway through.

Use the waiting period to make better decisions

The lead time is not wasted if you spend it choosing correctly rather than quickly.

Glazing performance is the decision that matters most in this climate, since a Bow Valley home sees strong solar gain on south facing walls and deep cold on winter nights. Sorting out coatings, gas fills and frame material during the wait is easier than regretting it later, which is where a conversation about higher performance glass packages pays off.

It is also the moment to decide scope honestly. Doing one wall now and the rest in three years costs more overall than a planned whole home replacement staged across two seasons.

If something fails before your order lands

Not every problem can wait for a manufacturing queue. A cracked pane, a failed seal fogging the glass or a casement that no longer latches in wind is a comfort and security issue right now.

In many cases hardware, sashes and sealed units can be addressed on their own, and a targeted repair visit holds the house until the replacement units arrive.

Book the measure, then let the calendar work for you

Everything above points the same direction. In the mountains you gain time by starting early, not by pushing crews harder in November.

If you are weighing replacement for a home in Canmore, Banff, Cochrane, Exshaw or anywhere in the Bow Valley, get in touch for a measured quote or call (825) 804-5236 and we will map your project against a realistic delivery and install window.