Roofing System Purlin Attachment Spacing
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Solution Overview
Problem
Existing metal roofing systems do not facilitate the secure overlay of a new metal roof onto an existing metal roof, as they lack the necessary components to attach directly to purlins and ensure proper alignment and stability.
Innovation Solution
A metal roofing system comprising support spacing members aligned with purlins, longitudinal clip members for securing adjacent panels, and roof panels of specific dimensions to ensure proper fit and stability, all made from materials like galvanized steel or aluminum.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a new metal roof is overlaid on an existing metal roof, then roof replacement cost is reduced and installation time is shortened, but the existing metal roof components lack the necessary elements to facilitate securing the new roof directly to the purlins
Solution Approach 1:
The patent introduces an intermediary component (attachment member with spacing element) that bridges the existing metal roof and the new roof system. This intermediary attaches to the existing roof and provides a mounting surface for the new panels, solving the problem of lacking securing elements on the existing roof while enabling direct attachment to purlins through the spacing element.
Solution Approach 2:
The roofing system is divided into distinct functional components: the existing roof, the intermediary attachment member with spacing element, and the new roof panels. This segmentation allows each component to perform its specific function - the attachment member provides securing capability while the spacing element ensures proper alignment and attachment to purlins, resolving the contradiction between ease of installation and reliable securing.
2Loss of time
If a new metal roof is overlaid on an existing metal roof, then installation time is shortened, but the new roof panels do not lie properly over the existing metal roof
Solution Approach 1:
The attachment member is pre-configured with an integrated spacing element that establishes the correct elevation and alignment before the new roof panels are installed. This preliminary positioning action ensures that when panels are laid over the existing roof, they automatically achieve proper alignment and lie flat, eliminating the need for time-consuming field adjustments.
Solution Approach 2:
The spacing element of the intermediary attachment member acts as a mediator that transfers and establishes the correct geometric relationship between the existing roof and the new panels. It provides a predetermined spacing and orientation that ensures proper panel alignment without requiring complex measurement and adjustment during installation, thus resolving the contradiction between quick installation and precise alignment.
3Strength
If the new roof is directly secured to the purlins, then structural integrity is improved, but additional components are required that increase device complexity
Solution Approach 1:
The patent merges the attachment function and the spacing function into a single integrated component (the attachment member with built-in spacing element). This combined component simultaneously provides structural attachment to the existing roof and establishes the correct spacing for purlin engagement, achieving direct purlin connection for improved structural integrity while minimizing the number of separate parts needed.
Solution Approach 2:
The attachment member serves multiple functions: it attaches to the existing metal roof, provides proper spacing alignment, and enables direct connection to the purlins. This multi-functionality allows the system to achieve enhanced structural integrity through direct purlin securing while avoiding the need for multiple separate components, thus resolving the contradiction between strength and complexity.
Data Source
AI summary
A roofing system that is configured to be superposed upon an existing roof and further be mechanically coupled to the purlins of the structure on which the roofing system is being installed. The present invention includes a plurality of support spacing members wherein the support spacing members are axially aligned with purlins of the structure and mechanically secured thereto. The support spacing members include a center portion that is elevated with respect to the existing roof. A plurality of roof panel members are provided wherein the roof panel members further include longitudinal edge formations. The longitudinal edge formations of the roof panel are configured to couple with longitudinal clip members in order to operably couple adjacent roof panel members during installation of the roofing system of the present invention. The longitudinal clip members are mateably shaped to facilitate coupling with the roof panel members.