Patio Door Screens in Ahuntsic–Cartierville

Patio doors in Ahuntsic–Cartierville

In a duplex or triplex from the 1920s to the 1960s, the patio door is never original. These buildings went up with a solid back door and sash windows; the sliding glass door came decades later, one renovation at a time, when an owner decided to open the back kitchen or living room onto the rear balcony or the yard. The opening was cut or widened in a load-bearing brick wall, and it is that opening — not a catalogue — that set the size of the door. So from one plex to the next in Ahuntsic–Cartierville, patio doors share neither age, nor brand, nor dimensions, and the screen panel that rides on each one follows the same rule. Before anyone talks about rollers, the first question is which door we are looking at.

The single-family cottages of the Ahuntsic sector are a different case. There, the patio door usually opens at grade onto a terrace or a small garden, and it has often been replaced once since it was first installed: a recent PVC door in an old house, carrying a screen panel of a common size. Along the main arteries of Cartierville, the three-storey apartment buildings carry their patio doors in series, one per balcony, all the same model and the same age: the track profile and roller type found on one door are usually the ones on the others. Three building types, three realities: the renovation door with one-of-a-kind dimensions, the replacement door in a common format, the apartment door repeated identically down the wall. A renovation door, a replacement door and an apartment door are not measured the same way: it is the opening, not the model, that gives the panel its dimensions. We take the panel down, put it right, and hang it back on site.

What gives out on these doors in Ahuntsic–Cartierville

On a patio door installed during a 1980s or 1990s renovation, the screen panel is the lightest and least carefully made part of the whole assembly. Its rollers are often small steel or nylon wheels on a spring, and the spring is what gives out first: the panel loses height, drags on the track, then pops out of its channel at the slightest bump. On an upper-floor balcony, that bump comes from wind as often as from hands. The mesh fails first at the bottom corner, where people nudge it open with a foot when their arms are full. We take care of all of it in one pass: rollers replaced and adjusted, track cleared and lubricated, frame squared if it has bent, new mesh stretched into the existing profile. On an upper-floor balcony panel, mesh and rollers are looked at together: a sagged roller puts the bottom of the frame back in contact with the track.

Access and constraints in Ahuntsic–Cartierville

The constraint here is the floor you are on. The patio door of a second- or third-floor plex unit opens onto a narrow rear balcony, sometimes a rooftop terrace, and that is where the screen panel comes off: it lifts, clears the track and tilts toward you, which takes room behind you and a steady hand above the railing. We never work a panel at arm's length over a drop; it goes indoors through the unit to be rescreened flat. A panel that has to come indoors means someone has to be there to open the door: that is the point to confirm when the appointment is set. And a renovation door cut into brick has no store size: the panel is measured on site, in its own opening.

Which mesh for your patio door in Ahuntsic–Cartierville

When there is an animal in the unit, the balcony patio door is its way through, and the sliding panel is what takes the clawing and the shoving. Pet-resistant mesh, with its thick strands and tight weave, is the one designed for that kind of use; no mesh is guaranteed against a determined animal. For a wide panel taking the wind on a rooftop terrace, aluminum holds its tension where fibreglass ends up bellying out. At ground level in a cottage with no animals, standard fibreglass remains the mesh that lets through the most air and light.