Polysiloxane Roofing Putty for Easier Step Flashing Sealing
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Solution Overview
Problem
Existing roofing applications face labor-intensive and knowledge-dependent challenges in applying materials, particularly with step flashing between multiple roof substrates, necessitating simplified and user-friendly solutions.
Innovation Solution
A roofing putty formulation comprising polysiloxane, silane, and filler, with specific weight ratios and mechanical properties, designed for easy application and improved adhesion between roof substrates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional roofing materials and methods are used for step flashing between multiple roof substrates, then the installation requires special knowledge about water flows and is time consuming, but the roofing system provides adequate waterproofing
Solution Approach 1:
The patent changes the physical and chemical parameters of the roofing material by using a polysiloxane-based putty formulation with specific viscosity ranges (70-300,000 cP) and elasticity modifiers, transforming it from a rigid material to a flexible, moldable putty that can be easily applied and stretched during installation, directly addressing the ease of operation and productivity concerns
Solution Approach 2:
The patent creates a composite material system combining polysiloxane base polymer, elasticity modifiers, fillers, and curing agents to achieve a putty with optimized balance between workability (ease of application) and final performance (waterproofing), resolving the contradiction between easy installation and effective protection
2Strength
If polysiloxane with high viscosity is used in the roofing putty, then the material provides good structural integrity, but the material becomes difficult to apply and spread
Solution Approach 1:
The patent applies parameter changes by controlling the viscosity of polysiloxane within a specific range (70-300,000 cP) and using elasticity modifiers to achieve the right balance between applyability and structural integrity, allowing the material to be easily spread during application while maintaining strength after curing
3Adaptability or versatility
If the roofing putty has high elongation properties, then the material can accommodate roof substrate movement and thermal expansion, but the material may have reduced tensile strength
Solution Approach 1:
The patent uses composite materials by combining polysiloxane base polymer with elasticity modifiers and fillers to create a putty that simultaneously achieves high elongation (90-500%) for accommodating substrate movement and maintains adequate tensile strength (100-1000 psi) for structural integrity, resolving the contradiction between adaptability and strength
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 putty formulation offers enhanced elongation, tensile strength, and tear resistance, facilitating faster and error-tolerant installation processes, reducing labor costs and complexity.
Implementation Method 1
the roofing putty is a formulation that includes at least one polysiloxane, at least one silane, and at least one filler
Implementation Method 2
the roofing putty exhibits an elongation ranging from 90% to 500% when tested according to ASTM D2370
Data Source
AI summary
Some embodiments of the present disclosure relate to a roofing putty. In some embodiments, the roofing putty is a formulation that comprises at least one polysiloxane, at least one silane, and at least one filler. Some embodiments of the present disclosure relate to a system comprising the roofing putty and at least one roof substrate. Some embodiments of the present disclosure relate to a method of using the roofing putty, such as, but not limited to, by disposing the roofing putty on at least one roof substrate.