Ventilation Member Passageways for Upward Venting and Drainage
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Solution Overview
Problem
Existing cladding systems for building structures, such as stucco and plaster, often result in moisture accumulation and leak issues between the cladding and substrate, necessitating improved drainage and venting systems.
Innovation Solution
A ventilation member system comprising a base panel, upper and lower panels, and passageways for moisture venting, integrated with a water-resistant barrier layer and drainage mat, which allows for upward and downward drainage of moisture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional cladding systems are used with weep screeds for drainage, then downward moisture drainage is achieved, but upward venting of moisture is not possible and leak problems occur between cladding and substrate
Solution Approach 1:
The ventilation member is designed to perform multiple functions: it provides both downward drainage through the leg portion and upward venting through the passageway system. The base panel with its multi-chamber structure (first chamber for downward drainage, second chamber for upward venting) allows the single component to handle moisture in both directions, eliminating the need for separate drainage and venting systems.
Solution Approach 2:
The ventilation member is divided into distinct functional segments: the base panel with first and second chambers for different drainage directions, the leg portion for downward drainage, and the panel extending from the base for upward venting. This segmentation allows each portion to specialize in a specific moisture management function while working together as an integrated system.
2Ease of manufacture
If cladding is applied directly over felt paper on substrate, then installation is simple, but moisture accumulation and leak problems occur between cladding and substrate
Solution Approach 1:
The ventilation member serves as an intermediary component installed between the substrate and the cladding system. It provides a structured interface that facilitates moisture management without complicating the overall installation process. The member integrates multiple moisture management functions into a single component that can be installed in conjunction with traditional cladding methods.
Solution Approach 2:
The ventilation member incorporates a water-resistant barrier layer that acts as a flexible film to prevent water penetration while allowing vapor transmission. This thin film structure provides effective moisture protection without adding significant bulk or complexity to the cladding system.
3Ease of operation
If weep screeds are used to stop cladding and drain moisture downward, then downward drainage is provided, but upward venting capability is missing
Solution Approach 1:
The ventilation member replaces the single-function weep screed with a multi-functional component that provides both downward drainage (through the leg portion) and upward venting (through the passageway in the panel). This universal design eliminates moisture accumulation by providing multiple escape routes for trapped moisture.
Solution Approach 2:
The invention adds a vertical dimension to moisture management by creating upward venting capability through the passageway system, complementing the traditional horizontal downward drainage. This multi-dimensional approach to moisture evacuation significantly improves venting effectiveness compared to single-direction drainage systems.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Effectively vents and drains moisture away from the substrate-cladding interface, preventing leaks and improving overall moisture management in building structures.
Implementation Method 1
a leg extending from the lower panel at a distal end thereof... moisture drained through the drain opening of the first leg drains on the second leg and is guided by the second leg
Data Source
AI summary
A ventilation member includes a base panel for mounting onto a substrate, an upper panel extending transversely from the base panel, a lower panel spaced apart from the upper panel, and an inner panel extending transversely from the lower panel. A passageway is defined having a first portion defined between the base panel and the inner panel and a second portion extending transversely from the first portion and being defined between the upper and the lower panel. When used as part of a system, the ventilation member may be an upper ventilation member and the system may include a second lower ventilation member including a base panel and a leg extending transversely thereof.