Slim-frame aluminum windows in a warm interior

Aluminum Windows in Montreal.

Thermally broken aluminum windows for Montreal builders, architects, and homeowners, glazed for a National Building Code zone 6 winter and custom sized to the plex and greystone openings a stock window line was never built to fit.

In short

Montreal's zone 6 cold and its heavy road-salt winters call for a low U-factor, triple-pane thermally broken frame, and a sill and finish that shrug off the calcium chloride spray a plow throws at every ground-floor window through a real Quebec winter. Crateworks builds that spec to order, sized to the narrow, tall openings of the city's triplex and greystone stock.

Built for Montreal’s climate

Montreal sits in National Building Code climate zone 6, a genuine cold-humid climate where a hard winter and a muggy Quebec summer both leave their mark on a window. Insulation value carries most of the winter load, so a low U-factor, warm-edge spacer, and triple-pane glazing matter more here than in a house built for a cooling climate. The other local factor is what falls on the sill all winter. Montreal salts its streets hard and often, and the spray a plow throws reaches ground-floor windows on any street-facing triplex, so the frame finish and hardware need real corrosion resistance, not a coating rated for a drier or gentler winter. Add the summer side of the swing, humid enough to test seals and glazing that were only ever proven against a dry cold, and the spec has to answer both seasons, not one. The buying window here runs May through July, so an order placed in that stretch is what protects a fall or next-spring install, not a scramble once the ground freezes.

Climate zone
NBC Zone 6 (cold-humid)
Best time to spec
May to July
What we plan for
deep cold, heavy snow, freeze-thaw, and humid summers

Why it suits Montreal

A wood sash in a Plateau triplex swells shut most Julys and sticks again by January, the two-season punishment this climate delivers on wood that a milder city never sees. Vinyl can crack at the corner welds once deep cold sets in, and the calcium chloride that de-ices the sidewalk out front is hard on a lot of factory finishes over a few winters. Aluminum with a proper thermal break skips all three failure modes and takes a road-salt winter without the finish chalking. Because most Montreal openings, a narrow plex bay, a tall greystone sash in Westmount or Outremont, were never built to a modern stock size, building to order is what puts triple-pane glazing and a genuine custom cut standard on the frame, not priced as an upcharge over a standard double-pane retrofit.

Container-direct delivery into Greater Montreal.

How it ships to Montreal: Freight lands right at the Port of Montreal on the St. Lawrence Seaway, in the metro itself.
Explore the full aluminum windows range →

Aluminum Windows types

Slim-frame aluminum windows in a warm interior

Casement

Casement, sourced to your spec.

How it works

  1. 01

    Send your scope

    Drawings, a materials list, or a rough idea. No account, no obligation. Just tell us what the project needs.

  2. 02

    We source & spec

    We match products to your climate and local code, then price them factory-direct from vetted suppliers, not off a distributor's shelf.

  3. 03

    One delivered quote

    The whole schedule comes back as a single coordinated quote, delivered to Montreal. One order, one point of contact.

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Common questions

On any street-facing opening, yes. Plow spray and calcium chloride reach ground-floor sills all winter, so frame finish and hardware are specced for that exposure, not carried over from a drier-climate coating.
That is most of the order. Plex bays and Westmount or Outremont greystone sashes rarely match a stock size, so we build to the opening's actual dimensions, not a fixed size chart.
It does. Seals and glazing are specced to handle a genuinely humid Quebec summer on top of the low U-factor a real winter demands, which a dry-cold climate spec was never tested against.
The buying window here runs May through July. Ordering in that stretch is what protects a fall or next-spring install date, rather than waiting until the ground freezes to start.

Nearby: Ottawa · Toronto · Winnipeg

Spec aluminum windows for Montreal.

Send drawings or a rough scope. We quote the Montreal delivered price, all-in.

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