WRB Closure Flaps for Repeated Mate Line Access and Sealing
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Solution Overview
Problem
The frequent opening and closing of mate lines in building construction leads to deterioration of the vapor-permeable water-resistant barrier (WRB) sheet, causing integrity and performance issues due to staple holes and wrinkles.
Innovation Solution
A method involving the preparation and use of vertical and horizontal closure flaps extending beyond the mate lines, supported by rigid strips and secured with fasteners, allowing for controlled access and sealing to maintain WRB integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the WRB sheet is repeatedly opened and closed to access mate lines for service installation, then access to mate lines is enabled, but the WRB sheet deteriorates with staple holes and wrinkles
Solution Approach 1:
The WRB sheet is segmented into fixed portions and movable flap portions. The flap can be opened and closed to access mate lines while the rest of the WRB remains intact and sealed, preventing deterioration from repeated operations
Solution Approach 2:
The WRB sheet is pre-installed and sealed across mate lines before construction activities begin. Flaps are prepared in advance to allow controlled access when needed, preventing the need for repeated opening and closing that causes deterioration
2Reliability
If the WRB sheet is covered over mate lines to maintain integrity, then water resistance is improved, but access for service lines and inspections is blocked
Solution Approach 1:
The WRB configuration transitions from a static sealed state to a dynamic state with openable flaps. The flaps can be moved between closed (sealed) and open (accessible) positions, allowing the system to adapt between maintaining water resistance and enabling service installation
Solution Approach 2:
Movable flaps act as intermediaries between the sealed WRB sheet and the mate lines requiring access. The flaps can be opened to allow service installation while maintaining the overall WRB coverage, then closed to restore water resistance
Data Source
AI summary
A process for covering, protecting and providing access to mate lines during building construction comprising the steps of preparing a vertical and horizontal mate line closure flap, carrying out a vertical and horizontal mate line access process, carrying out a vertical and horizontal mate line closing process, repeating the vertical and horizontal mate line access and closing processes as required, and carrying out a vertical and horizontal mate line sealing process to complete the building weatherization.