Insulated Wall-Sheathing Panel With Weather-Resistive Barrier
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Solution Overview
Problem
Existing wall panel construction systems face challenges in providing efficient, safe, and time-saving installation processes while preventing bulk water penetration and ensuring improved thermal resistance.
Innovation Solution
The development of insulated wall-sheathing (IWS) panels comprising multiple layers, including an open-celled foam insulation layer, a structurally-stable panel, an optional nail-gasketing adhesive layer, and a weather-resistive barrier (WRB) layer with an extension flap and a removably attached release-liner.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If house-wrap is unrolled and spread over the walls and attached with staples or nails, then bulk water protection is provided, but installation complexity and time increase
Solution Approach 1:
The patent combines the weather-resistive barrier (WRB) layer with the insulation layer into a single integrated IWS panel assembly. The WRB layer is factory-applied to the back side of the insulation panel, eliminating the need for separate installation of house-wrap and insulation. This merging of functions reduces installation steps while maintaining bulk water protection capabilities.
Solution Approach 2:
The WRB layer is pre-applied to the insulation panel at the factory before delivery to the construction site. This preliminary action ensures that the barrier is already in place and properly positioned, eliminating the need for workers to manually unroll, position, and attach house-wrap on-site, thereby reducing installation complexity and time.
2Ease of operation
If house-wrap is fastened at limited points, then installation is simplified, but pockets or voids form between sheathing and house wrap that trap moisture
Solution Approach 1:
The adhesive layer on the back side of the insulation panel automatically bonds the WRB layer to the sheathing when pressed together, eliminating the need for manual fastening operations. This self-service mechanism ensures complete surface contact without creating pockets or voids, while still being simple to install as the panels are just pressed together at the construction site.
3Strength
If traditional insulation sheathing is fastened to exterior cladding, then structural attachment is achieved, but pockets or voids form and external finishing options are limited
Solution Approach 1:
The IWS panel integrates the insulation layer, WRB layer, and adhesive layer into a single factory-assembled unit. This merging eliminates the need for separate fastening operations to attach insulation to cladding, as the adhesive layer provides immediate bonding when the panel is installed, reducing installation steps and avoiding pocket formation.
4Temperature
If foam insulation sheathing is used to improve thermal resistance, then thermal performance improves, but physical damage during installation and limited building applications occur
Solution Approach 1:
The IWS panel uses a composite structure combining the foam insulation layer with the WRB layer and adhesive layer. The WRB layer acts as a protective skin that shields the foam insulation from physical damage during handling and installation, while the adhesive layer ensures secure bonding. This composite construction maintains the high thermal resistance of foam insulation while significantly improving its durability and适用范围.
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 IWS panels enhance the longevity of walls by improving permeation characteristics, provide improved thermal resistance, and simplify the installation process by being resistant to bulk water while permeable to water vapor.
Implementation Method 1
improve thermal resistance
Implementation Method 2
permeable to water vapor
Data Source
AI summary
This invention relates to insulated wall-sheathing (IWS) panels, a panel assembly comprising such panels, and systems for use in building construction designed to provide moisture permeable panels that protect from bulk water, excess air, and thermal transfer. More specifically, this invention relates such panel used for construction purposes, comprising multiple insulation layers including an open-celled foam layer; a structurally-stable panel; an optional nail-gasketing adhesive layer; and a weather-resistive barrier layer; wherein, optionally, the weather-resistive barrier (WRB) layer exceeds the dimension of the wood-composite panel from at least one of its edges to create an extension flap; and wherein the extension flap of the WRB layer further comprises a removably attached release-liner on its back. This invention allows for a longevity of the wall due to the improvement in permeation characteristics from the presence of the open-celled foam insulation layer.