Pre-Make Airtight Window Corners With Tescon Profil

For more see: foursevenfive.com (USA) | foursevenfive.ca (Canada)
One of the hardest parts to properly make a house airtight is making the air control layer absolutely continuous: to go around the drawing and through every detail without picking up the red pen. This is especially true at the 3 dimensional connections of inside corners, which don’t necessarily announce themselves in 2D drawings.

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Seems like there's a risk of a pinhole leak in the corner, because it's been cut to where the corner is. That's the same problem with any standard taping strategy for these corners. Am I missing something for how this product is better from a sealing perspective? It just seems slightly easier to handle.

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A completely reasonable assumption, for sure. But we find in practice, the pinhole issue does not come up with this method. Part of the reason being that these are pressure sensitive adhesives tapes. When pressurized with the blue Pressfix tool, as you see here, there is just enough oozing of the adhesive to cover you. We also find that pre-making the window corners does speed up the process. To sit down, count your corners and make them all in one shot is significantly quicker and easier on the installer than work in the corners of the window. Each one of these takes seconds to install. And it can be quite difficult to adequately cover and pressurize a corner if it's high up or hard to reach.