Single-Lap Roof Mounting System with Waterproofing Device
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Solution Overview
Problem
Traditional roof mounting systems using double lap formats are heavy, costly, and time-intensive due to the large amount of materials required, and they face challenges with water ingress and wind-driven rain, especially at lower pitch angles, which can lead to roof failure.
Innovation Solution
A single-lap roof mounting system utilizing a water-impermeable locating and waterproofing device with a short edge secured to a batten and a long edge sandwiched between slates, creating a continuous barrier to prevent moisture ingress and reduce material usage, featuring a curved corner bead and foam strips for enhanced performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional double lap format is used, then waterproofing performance is improved, but material quantity and weight increase significantly
Solution Approach 1:
A waterproofing underlayment is introduced as an intermediary layer between the roof deck and the slates. This underlayment provides continuous waterproof protection, allowing the use of single lap format without compromising waterproofing performance. The underlayment acts as a mediator that carries the waterproofing function, enabling reduction of slate quantity while maintaining reliability.
Solution Approach 2:
The invention changes the lap parameter from double lap (overlapping two courses) to single lap (overlapping one course), fundamentally altering the coverage parameter. This parameter change, combined with the introduction of underlayment, reduces material quantity by approximately 33% while maintaining waterproofing through the underlayment's continuous barrier function.
2Reliability
If traditional double lap format is used, then waterproofing performance is improved, but installation time increases
Solution Approach 1:
The waterproofing underlayment serves as a preparatory intermediary layer that simplifies subsequent slate installation. By providing a continuous waterproof base, it eliminates the need for complex double lap overlapping, reducing installation steps and time while maintaining waterproofing performance.
Solution Approach 2:
The underlayment is installed in advance before the slates, performing the waterproofing function preliminarily. This preliminary action allows the slates to be installed in a simpler single lap format, reducing installation time while the underlayment continues to provide waterproof protection.
3Quantity of substance
If single lap format is used, then material quantity and weight are reduced, but waterproofing performance deteriorates
Solution Approach 1:
The waterproofing underlayment is the key intermediary that enables single lap format to achieve adequate waterproofing. It provides a continuous barrier that compensates for the reduced overlapping, allowing material quantity to be reduced while reliability is maintained through the underlayment's waterproofing function.
4Shape
If traditional stone slates are used, then aesthetic appearance is maintained, but weight and cost increase
Solution Approach 1:
The invention changes the material parameter from traditional heavy stone slates to alternative materials such as concrete tiles, clay tiles, or composite materials. These alternative materials can be shaped to replicate the aesthetic appearance of stone slates while significantly reducing weight and cost, without affecting the functional performance when used with the single lap system and underlayment.
Data Source
AI summary
The present invention relates to a roof mounting system with a locating and waterproofing device (100) which is formed from a water impermeable medium. The device has a short edge (104) which is dimensioned to rest against and be secured to a batten (121) and a long edge (106), whose upper portion rests on an upper surface of the batten (121). A lower portion of the locating and waterproofing device rests on a lower slate or stone (10A) and is sandwiched between the lower slate or stone (10A) and an upper slate or stone (10B) so that a continuous barrier (102) is formed along the long edge (106) to provide a water resistant barrier and to create a void (116) between the lower slate or stone (10A) and the upper slate or stone (10B).