Window Screen Repair in Dorval

Dorval was built in two stages, and you can still read it street by street. Along Lac Saint-Louis are the oldest houses, left over from the era when the area was a summer resort: large homes with screened verandas and sunrooms, designed for living outdoors away from the insects. Those structures are the most demanding work in this trade. A screened sunroom does not have screens in the sense of a panel you unclip — they are large panels built to the dimensions of the structure itself, often installed decades ago and never standardized. When the mesh in one of them lets go, there is nothing to buy off a shelf. You measure the opening on site and refill the existing panel, or build the frame to the figures you took.

North of the railway it is an entirely different stock: post-war bungalows and two-storeys from the 1950s and 1960s, built in whole neighbourhoods and delivered with aluminum screens in very narrow profiles. Sixty years on, those are the frames that end up set aside in a garage or a shed, because the mesh is torn and nobody knows what to do with them. They cannot simply be replaced: those profiles are no longer sold anywhere, and a new frame would have to be custom-built to the original opening in any case. As long as the aluminum is straight or can be straightened, putting fresh mesh in it is both the cheaper route and the one truest to the house. The frame has already proven it closes.

A screened sunroom or veranda is repaired panel by panel, and the first thing to establish is what actually failed. Often the mesh has simply come out of its groove, or the retaining spline has dried out and split: the panel looks destroyed when all it needs is refilling. On surfaces that large, the mesh choice counts double. Standard fibreglass slackens and bellies on a wide panel; aluminum, being stiffer, holds flat and takes the wind off the lake better. And on a veranda there is the cold season to think about too: clear MICA-type film turns a screened panel into a windbreak, which extends the use of the room on both sides of summer.

In the bungalows north of the tracks the windows are more conventional: period sliders and casements, plus a few sash windows in the oldest houses. The slider carries its screen on a side track and wears out its rollers before its mesh; the casement carries it inside, unclipping from latches, and gets rescreened in its own frame without anyone stepping outside. What all these houses have in common is the age of the hardware: broken pull tabs, split corner keys, missing retaining clips. Those are parts to replace, not reasons to change a screen. Look at what is missing before concluding the panel is done for.

What sets Dorval apart is the proportion of non-standard work. A veranda panel has no equivalent in any store, and two adjacent panels on the same veranda are not always exactly the same size: older structures have shifted, and the openings with them. The only reliable method is to measure each panel individually, opening by opening, rather than measuring one and multiplying. It takes longer, but it is the difference between a panel that seats on the first try and a panel to rebuild. Same logic for the 1950s aluminum frames: each was fitted to its own opening, and the habit of moving them from one window to another, common in houses of that age, eventually leaves you with panels that no longer close anywhere.

Being near the water changes the calculation. A house facing Lac Saint-Louis, or a few streets back from it, gets insects that inland parts of the island do not see the same way: spring no-see-ums and black flies simply walk through a standard weave, and the owner assumes there is a hole when the mesh is perfectly intact. This is exactly the case where no-see-um mesh, with its much tighter weave, solves a problem no repair could solve. On large panels exposed to the wind off the lake, aluminum remains the most durable choice. The season runs April through October.