Modular vent for metallic roofing
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Solution Overview
Problem
Existing roof ventilation systems face installation complications on metal and non-metal roofs due to design limitations, such as damage from hail, water pooling, and poor sealing, especially with traditional turtle vents that are not adaptable to ribbed metal panels.
Innovation Solution
A modular vent assembly with a triangular shape and integrated cricket, featuring a removable impact-resistant lid and air passages, designed to match various roofing materials and structures, allowing for easy installation and effective water runoff, while preventing precipitation and debris entry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional turtle vents are installed on metal roof panels, then ventilation function is provided, but the ribs on metal panels cause installation complications and the vents are damaged by hail and inclement weather
Solution Approach 1:
The vent is divided into separate components: a base plate that interfaces with the roof, a body section, and a cap. This segmentation allows each component to be optimized for its specific function, with the base plate designed to accommodate metal panel ribs and the cap providing protective coverage against hail and inclement weather.
Solution Approach 2:
The vent incorporates a adjustable or removable cap design that can be positioned or removed as needed. This dynamic element allows the vent to adapt to different weather conditions, providing protection when needed while maintaining ventilation functionality.
2Reliability
If traditional turtle vents are installed on roofs, then ventilation is provided, but water pooling occurs on the flat back of the vent
Solution Approach 1:
The base plate is designed with an asymmetric configuration featuring a sloped or angled back surface rather than a flat back. This asymmetric geometry promotes water runoff by directing water away from the vent body, preventing pooling and associated water damage.
Solution Approach 2:
The design adds a dimensional element to the back surface of the vent, transitioning from a two-dimensional flat surface to a three-dimensional sloped surface. This dimensional change creates a water shedding profile that actively directs water flow away from the vent.
3Reliability
If traditional turtle vents are installed, then ventilation is provided, but crickets are poorly sealed and roofers cause splits and voids in shingles
Solution Approach 1:
The vent base plate is pre-designed with integrated sealing features and pre-formed cricket structures that are ready for installation. This preliminary preparation eliminates the need for roofers to cut and form shingles or metal panels around a separate cricket, preventing installation errors such as splits and voids.
Solution Approach 2:
The cricket structure is merged with the vent base plate into a single integrated component. This combination simplifies installation by eliminating separate cricket installation steps and ensures proper sealing without requiring additional cutting or forming operations on the roofing material.
4Reliability
If traditional boxy vents are used, then ventilation is provided, but the shape is inflexible and difficult to adapt to various roof types
Solution Approach 1:
The vent is designed with a universal base plate configuration that can accommodate multiple roof types including metal panels with ribs, asphalt shingles, and other roofing materials. The base plate's design allows it to interface with different roof structures, making the vent adaptable to various roof types while maintaining consistent ventilation performance.
Data Source
AI summary
A vent assembly is adapted to be installed over an aperture in a roof to enable ventilation. The vent assembly has a roofing panel attachable to a roof and a vent cap with attaches over the roofing panel and prevents precipitation from entering the assembly. The roofing panel has a flat panel section, an aperture perforating the panel section, a fence bounding the aperture, and a runoff cricket formed by one corner of the triangularly-shaped fence. The vent cap has a chamfered triangular shape matching that of the fence. The vent cap includes a runoff cover and interior air passages to enable air to pass from an attic space through the roofing panel and out through the vent cap. The distinctive shape of the vent assembly provides advantages in easily installing the assembly to a variety of roofs, both metallic and non-metallic.