3D-Printed Roof Flashing for Complex Joint Waterproofing
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Solution Overview
Problem
Existing flashing materials and installation methods struggle with complex roof shapes, requiring skilled labor and difficulty in achieving a weatherproof seal, especially at sharp turns and junctions, leading to potential water penetration and structural damage.
Innovation Solution
A waterproofing building product with overlapping and underlapping sections, a transition section, and a draining cavity, produced via additive manufacturing, such as three-dimensional printing, to accommodate multi-axial changes in direction and provide a watertight seal without skilled labor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional overlapping joint methods are used for roof sheeting, then structural strength is maintained, but the ability to change direction and accommodate complex roof shapes is limited
Solution Approach 1:
The flashing is divided into distinct functional sections: an overlapping section for engagement with one roof panel, an underlapping section for engagement with another roof panel, and a transition section connecting them. This segmentation allows each section to be optimized for its specific function, enabling direction changes while maintaining simplicity of installation.
Solution Approach 2:
The invention transitions from traditional two-dimensional overlapping joints to a three-dimensional integrated flashing structure with multiple sections. The transition section adds a new dimension by providing a connecting element that bridges the overlapping and underlapping sections, enabling complex geometric configurations while simplifying installation through a single integrated component.
2Reliability
If specialist skilled roofing trades people are used to install weatherproof sealant on complex roofs, then waterproofing reliability is improved, but labor costs and installation time increase
Solution Approach 1:
The flashing design incorporates self-aligning and self-sealing features through its integrated structure. The overlapping and underlapping sections are designed to automatically position themselves correctly during installation, and the transition section provides inherent waterproofing without requiring additional sealant application by skilled workers. This self-service approach maintains high reliability while dramatically improving installation speed and reducing labor costs.
3Strength
If corrugated roofing panels are joined by overlapping end portions, then structural integrity is maintained, but sharp turns and direction changes become problematic
Solution Approach 1:
The flashing incorporates different structural qualities in different sections: the overlapping section has features optimized for strong engagement with one panel, the underlapping section has features optimized for engagement with another panel, and the transition section has geometry optimized for direction changes. This local differentiation allows the joint to maintain high strength while accommodating sharp turns and complex roof shapes that would be problematic with uniform overlapping joints.
Data Source
AI summary
In one aspect there is disclosed a waterproofing building product (10) for use in waterproofing a joint (12) between a first and second roofing panel (14, 16). The waterproofing building product (10) includes an overlapping section (18) operatively adapted to overlap a portion of the first roofing panel (14) and an underlapping section (20) operatively adapted to underlap a portion of the second roofing panel (16). The waterproofing building product (10) further includes a transition section (22) located between the overlapping section (18) and the underlapping section (20) and connecting the overlapping section (18) with the underlapping section (20).