Prefabricated Multi-Layer Roofing Panel with Interlocking Edges
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Solution Overview
Problem
Existing roofing systems for low-slope commercial and industrial buildings require separate application and installation of insulation, cover boards, and waterproofing membranes, which are time-consuming, labor-intensive, and prone to defects, lacking a unified, easily installable, and defect-reduced solution.
Innovation Solution
A prefabricated multi-layer roofing panel combining an insulation layer, a bonded cover board, and a waterproofing membrane, with self-adhering capabilities and interlocking structures for quick assembly and enhanced structural integrity, allowing for adhesive or mechanical fastener attachment depending on the substrate, and overlapping seams for watertight membrane formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If separate application of insulation, cover boards, and waterproofing membrane is used, then each component can be optimized independently, but installation time and labor costs increase significantly
Solution Approach 1:
The patent combines insulation boards, cover boards, and waterproofing membranes into a single integrated prefabricated roofing panel assembly. This merging of previously separate components allows the system to maintain the functional optimization of each layer while dramatically reducing installation time and labor requirements, as the entire assembly is installed as one unit rather than three separate layers
2Reliability
If separate application of multiple roofing layers is used, then proper installation of each layer is possible, but the number of installation steps and potential defects increase
Solution Approach 1:
By integrating multiple roofing components into a single prefabricated panel, the patent reduces the number of installation steps from three separate applications to one unified installation process. This maintains the reliability and quality of each component while eliminating the cumulative defects that can occur during multiple separate installation operations
Solution Approach 2:
The roofing components are pre-assembled and bonded together in a controlled factory environment before delivery to the construction site. This preliminary action ensures proper alignment, bonding, and integration of layers before installation, reducing the complexity and potential for errors during field installation
3Ease of manufacture
If traditional roofing panels without interlocking structures are used, then manufacturing is simpler, but structural integrity and resistance to wind uplift are reduced
Solution Approach 1:
The patent incorporates interlocking structures with tongue and groove edges on the prefabricated roofing panels. These segmented features allow adjacent panels to mechanically connect, creating a unified roofing system that resists wind uplift forces while maintaining ease of manufacture through standardized edge profiles that can be efficiently produced
4Ease of operation
If self-adhering adhesive is applied to all roofing substrates, then mechanical fasteners are eliminated, but some substrates require mechanical fastening to meet wind uplift standards
Solution Approach 1:
The patent applies self-adhering adhesive selectively based on the substrate type and wind uplift requirements. For substrates where adhesive alone meets code requirements, mechanical fasteners are eliminated simplifying installation. For substrates or conditions requiring higher wind uplift resistance, mechanical fasteners are used in conjunction with the adhesive, ensuring code compliance while maintaining ease of operation where possible
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
The solution reduces installation time and labor costs, minimizes defects, and ensures a watertight, structurally sound roofing system while accommodating substrate types and insulation shrinkage without compromising insulation properties.
Implementation Method 1
the prefabricated multi-layer roofing panel of the subject invention has a self-adhering adhesive on its bottom major surface (the bottom major surface of the insulation layer) for effectively, easily, and quickly securing the prefabricated multi-layer roofing panel to an underlying roofing substrate
Implementation Method 2
a cover board that overlies and is bonded to the insulation layer, and a waterproofing membrane that overlies and is bonded to the cover board
Data Source
AI summary
A prefabricated multi-layer roofing panel is utilized in a roofing system for low-slope roofs. The prefabricated roofing panel includes: an insulation layer that may have a self-adhering means on its bottom major surface for securing the roofing panel to a roofing substrate; a cover board that overlies and is bonded to the insulation layer, and a waterproofing membrane that overlies and is bonded to the cover board. The waterproofing membrane may have waterproofing membrane overlaps for overlapping and being bonded to the waterproofing membranes of other roofing panels in the formation of a roofing system. Preferably, the insulation layer includes interlocking structure for interlocking the prefabricated multi-layer roofing panels together in the roofing system.