Install Water Resistant Barrier (WRB)

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Learn window and flashing installation. Learn how to keep the water out💪 #window #flashing #learn

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What happens here

Before cutting the window opening in the house wrap, attach the Water Resistant Barrier (WRB) to the sheathing. The video demonstrates that a woven-style house wrap can hold water without leaking but still allows water vapors to escape. For siding choices that require it, a drainable house wrap (which creates a 1mm gap between the siding and the WRB) should be used to facilitate drainage behind the siding.

Goal: Attach the WRB and understand its properties for water and vapor management.

Tools and materials

Drainable House Wrap Sample N/A — Demonstrating the rain screen principle
Siding Sample N/A — Illustrating the need for drainable house wrap
Water Resistant Barrier — Providing a waterproof and vapor-permeable layer over the sheathing
Water Sprayer N/A — Demonstrating water shedding properties of WRB and drainable wrap

What they say

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windows. It's not always the case for all windows. How you can attach your water-resistant barrier. The woven style house wrap can hold water without leaking, but still allows vapors to release through the woven holes. This allows the house wrap to shed water. Also allows water vapor to escape when it's inside. Depending on siding choice, you might want to use a drainable house wrap. A rain screen works by keeping a gap from the material to the house wrap. So, when water flows, it can easily flow behind this 1 mm gap. Cut your window

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