If a bucket has 3 holes and you plug up 2 of them, you still have a leaky bucket. One of the difficulties for proper airsealing is making the air control layer absolutely continuous. 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 2 dimensional drawings. Window installation is a big source of these kind of challenges, especially given the types of windows installed in high performance projects are new to US installers.
This workshop will encompass a hands-on design session for proper window installation. 475 has invited 4 different window retailers based in the NY-metro to show their recommended high performance installations and bring their best products. Participants will have a chance to interact with each mock-up to see methods and materials. High performance windows supplies represented include:
Each installation method displayed will demonstrate true high performance in real-world situations, starting with water protection: the first line of defense. Water leaks around window installations are a common form of moisture damage that can be avoided with proper techniques that assure long-lasting airtightness. Taking the extra step to prepare for these hard-to-reach spots will make for a durable, tight, install that prevents frustrating leaks during the blower door test.