Under Tile Sheet With Protuberances For Anti-Slip Roofing
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Solution Overview
Problem
Existing waterproofing under tile sheets for roofs lack anti-slip properties, posing safety risks for installers, especially on inclined pitches, due to smooth surfaces that can cause slipping.
Innovation Solution
A multilayered under tile sheet with a reinforcement layer of fibrous material, bituminous waterproof membranes, and external fibrous layers with protuberances that provide mechanical strength, waterproofing, and anti-slip properties by creating friction with shoe soles and the roof surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a smooth surface is used for waterproofing, then waterproofing performance is improved, but operator safety deteriorates due to slipping risk
Solution Approach 1:
The invention applies different surface qualities to different locations: the lower surface remains smooth for waterproofing contact with the roof, while the upper surface features protruding elements for anti-slip safety. This local differentiation resolves the contradiction by providing appropriate surface characteristics in each location.
Solution Approach 2:
The sheet combines a smooth waterproofing layer with a separate anti-slip layer featuring protruding elements. This composite structure integrates both the waterproofing function and the safety function, allowing the sheet to provide both smooth contact for water sealing and textured contact for operator traction.
2Object-affected harmful factors
If a textured anti-slip surface is added, then operator safety is improved, but surface smoothness for waterproofing deteriorates
Solution Approach 1:
The sheet is divided into distinct functional layers: a lower waterproofing layer with smooth surface and an upper safety layer with textured protruding elements. This segmentation allows each layer to optimize its specific function without compromising the other, maintaining smooth waterproofing contact while providing textured anti-slip safety.
Solution Approach 2:
Different surface qualities are applied to different surfaces of the sheet: the lower surface maintains smoothness for waterproofing, while the upper surface develops protruding elements for anti-slip. This local quality differentiation ensures that waterproofing performance is not compromised while adding safety functionality.
3Object-affected harmful factors
If multiple layers are added for anti-slip properties, then safety is improved, but device complexity increases
Solution Approach 1:
The anti-slip functionality is extracted as a separate upper layer with protruding elements, distinct from the lower waterproofing layer. This extraction allows the anti-slip feature to be added without fundamentally redesigning the waterproofing layer, thus improving safety while limiting the increase in overall structural complexity.
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 sheet enhances safety during installation by preventing slipping, maintains mechanical strength, impermeability, thermal insulation, and ultraviolet resistance, while allowing for ventilation micro-chambers between the sheet and insulation panels.
Implementation Method 1
a first 20 and a second 30 membrane layers, or simply waterproof membranes
Implementation Method 2
The cusps 60 are suitable to create a friction between the shoe soles of an operator walking on the laid sheet and the sheet itself
Implementation Method 3
ensure a suitable thermal insulation of the building
Data Source
Figure 1~2
AI summary
The present invention relates to an under tile sheet (100) for waterproofing a roof of a building. The sheet comprises: - a reinforcement layer (10) in fibrous material having a first (1) and an opposite second (2) faces; - a first (20) and a second (30) water-proof membrane connected to the first face (1) and the second face (2), respectively; - a first (40) and a second (50) layers in fibrous material connected to said first (20) and second (30) impermeable membranes, respectively; the first membrane is interposed between the reinforcement layer (10) and the first fibrous layer (40), and the second membrane is interposed between the reinforcement layer (10) and the second fibrous layer (50). The sheet is characterized in that at least one of such first (40) and second (50) fibrous layers comprises, on a face (41) opposite a further face (42) adjacent to one of the impermeable membranes, a multiplicity of protuberances (60).