The process of installing a commercial window may seem simple. However, the complexity of this process requires that each step be carefully planned to ensure durability, sleek design, watertightness, and compliance with Quebec Building Code standards. To guide you on and off the job site, our expert installers describe their approach.

First and foremost, it is essential to check the membranes of the rough opening, which are often installed by other trades. They must be flawless, as they are the first barrier against water infiltration. Double or even triple protection is recommended.

Next comes caulking, both inside and outside. This step requires meticulousness and consistency, as it ensures the continuity of the air barrier and vapor barrier. Each window is then thoroughly inspected after installation to ensure compliance and quality of work. All these checks minimize unforeseen events and ensure that you are prepared for any eventuality.

Our installers can sometimes encounter poorly sealed thermos, poorly adjusted shutters, or finishing joints that are too wide and poorly executed.

The waterproofing membrane is also a critical point: poor overlap or failure to follow the installation sequence can lead to the risk of infiltration and require the entire process to be redone.

Teams that prioritize collaboration, not only among their own members but also with other trades, come out on top.

According to our construction experts, it all comes down to the details of the finish and waterproofing.

A professional installation can be recognized by:

• perfectly fitted glazing beads,
  properly applied urethane,
  and complete, precisely fitted hardware.

Every step counts: the quality of a building depends on the precision of these invisible details.

Our installers remind you that the membrane around the window is crucial. Poor installation can compromise the air barrier, cause damage to the plywood, and lead to water infiltration in the long term.

The ideal sequence:

• gussets in the corners,
• bottom membrane,
• jambs,
• top membrane.

Soprema Stick membranes are frequently used, always accompanied by a compatible sealant recommended by the manufacturer to ensure waterproofing continuity.

In Quebec, the climate imposes its harsh conditions. Before any installation, it is necessary to ensure that there is no ice on the surfaces. The materials chosen must be adapted to freeze-thaw cycles and outdoor temperatures.

Our installers rely on preparation, planning, and the right equipment, including multi-layered clothing, to maintain performance in the field.

The success of a project also depends on coordination between teams. Before work begins, Vitralum ensures that all parties involved understand the sequence of operations to maintain the continuity of the air barrier and vapor barrier.

Being proactive in the face of unforeseen events is a recognized mark of professionalism.

• STEKAR STE-4000 windows, the new high-performance generation.
• Dow sealant for finishing touches.
• No specific anchoring, but extreme care taken with precision and alignment.

Vitralum installers take real pride in seeing the buildings they have worked on go up.

Their advice to young people:

“Take the time to do things right. Quality comes before speed.”