Shower Wall Flashing Structure for Waterproof Junctures
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Solution Overview
Problem
Existing waterproofing solutions fail to effectively prevent water intrusion behind wallboard and shower components, leading to mold growth and discoloration in shower areas, particularly at the interfaces between shower pans, wallboards, and accessories.
Innovation Solution
A novel flashing element, such as 'z' or 'h' shaped water-impervious members, is positioned between adjacent sections of shower pans, wallboards, and accessories to create a waterproof barrier, preventing water from seeping behind the tiles or surfaces by using horizontally and vertically oriented water-impermeable materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a thin flashing is used between adjacent wallboards and shower components, then the waterproofing effectiveness is improved, but the device complexity and installation difficulty increase
Solution Approach 1:
The flasher is divided into multiple functional segments: a horizontal portion that bridges the gap between shower components and wallboard, and a vertical portion that extends behind the wallboard. This segmentation allows each part to perform its specific waterproofing function while maintaining overall simplicity of the device.
Solution Approach 2:
The flasher transitions from a two-dimensional planar element to a three-dimensional structure by adding the vertical portion that extends behind the wallboard. This dimensional change enables the flasher to create an effective waterproof barrier in the depth dimension, preventing water intrusion behind the wallboard while maintaining simplicity.
2Ease of operation
If traditional waterproofing methods are used without a flasher, then the installation simplicity is maintained, but water intrusion and mold growth occur
Solution Approach 1:
The flasher is installed beforehand, before the wallboard is attached to the shower components. This preliminary action creates a pre-positioned waterproof barrier that automatically prevents water intrusion at the critical interface between shower components and wallboard, maintaining installation simplicity while eliminating harmful water intrusion.
Solution Approach 2:
The flasher acts as an intermediary element positioned between the shower components (pan, bench, accessories) and the wallboard. This intermediary structure prevents direct water contact with the wallboard interface, blocking the pathway for water intrusion and subsequent mold growth while requiring minimal additional installation steps.
Data Source
AI summary
A waterproofing flashing and resulting juncture, comprising in a first embodiment a generally horizontally positioned planar member which is positioned in sandwiched engagement between the upper peripheral edge of a shower pan or shower bench sidewall (or equivalent wallboard) and a lower peripheral edge of adjacent wallboard (or equivalent shower bench, shelf or ledge), and a vertically extending member attached to a distal edge of the horizontal member extending vertically upwardly behind the wallboard (or equivalent shower bench, shelf or ledge). An alternative form of the invention comprises a T-shaped flashing member comprised of a mid-section to which are connected first and second attachment members or wings, the wings adapted to connect the flashing to the room-facing side of the wallboard and/or shower module sections. A further version of the invention comprises a waterproof juncture comprised of a water-impermeable membrane applied over at least the upper peripheral edge of a wallboard or shower pan sidewall and a portion of an adjacent wall-forming member which is coplanar with the wall studs, which in turn will form a waterproof covering over the seam between the upper peripheral edge of the wallboard or shower pan sidewall (or equivalent shower bench, shelf or ledge) and the adjacent wall-forming member.