Window Door Flashing Diverter Sheets Waterproofing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for waterproofing and sealing structural joints around window and door frames, especially at corners and recessed areas, are complex and require additional steps or materials, making them difficult to install quickly and adapt to various opening types.
Innovation Solution
A method involving diverter sheets and flexible membranes with self-sealing properties, where sheets are configured to form dams and flaps around the opening, and sealed using adhesive strips or fasteners, allowing for quick installation and adaptation to different sizes and recess depths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional flashing techniques and materials are used, then waterproofing and sealing can be achieved, but the installation process becomes complicated and time-consuming, especially at corners and recessed areas
Solution Approach 1:
The flashing system is divided into separate functional components: a waterproofing layer (e.g., building wrap or house wrap) and a flashing layer (metal or composite strips). This segmentation allows each component to be optimized independently and simplifies installation by enabling modular assembly at corners and recessed areas without requiring complex integrated designs.
Solution Approach 2:
The waterproofing layer is installed and sealed to the building structure before the flashing layer is applied. This preliminary action establishes a continuous waterproof barrier that simplifies subsequent flashing installation, as the flashing only needs to be attached to the pre-sealed waterproofing layer rather than directly to the building structure, reducing on-site fabrication and additional sealing steps.
2Reliability
If existing flashing methods are used for recessed openings, then sealing against moisture penetration can be achieved, but additional sealing steps and weather resistant barrier layers are required
Solution Approach 1:
The flashing layer is designed as a universal component that can be applied to various opening types (flat, recessed, protruding) and corner configurations using the same basic attachment method. The flashing strips can be routed around recessed openings and attached to the waterproofing layer without requiring different sealing procedures or additional barrier layers, enabling quick installation across different opening types while maintaining effective moisture sealing.
3Reliability
If multiple sealing layers and weather resistant barriers are applied, then protection against moisture penetration is improved, but the installation time and cost increase
Solution Approach 1:
The waterproofing function is extracted and consolidated into a dedicated waterproofing layer (building wrap or house wrap) that is installed first and sealed to the building structure. This extraction allows the subsequent flashing layer to focus solely on providing additional protection and directing water away from openings, eliminating the need for multiple sealing layers and weather resistant barriers to be applied sequentially, thereby reducing installation time while maintaining comprehensive moisture protection.
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 method provides a quick, adaptable, and effective waterproofing solution for various window and door opening types, including recessed frames, by forming a comprehensive seal with minimal installation time and cost, while maintaining structural integrity.
Implementation Method 1
placing an adhesive strip along the diverter flap configured to attach the diverter flap to the backside of the door or window frame
Implementation Method 2
applying a sheet of flexible membrane at each intersection of the bottom sill and each side jamb over the sill diverter dam, stretching each sheet of flexible membrane over an outside edge of the respective intersection
Data Source
AI summary
A method for flashing an opening defined by a bottom sill, a pair of side jambs, and a top header includes forming a sill diverter dam at the bottom sill to receive a backside of a door or window frame with an adhesive strip placed along the sill diverter dam. The method further includes applying a sheet of flexible membrane at each intersection of the bottom sill and each side jamb, attaching a strip of weep flashing to the wall overlapping the diverter dam at the bottom sill, applying sealant along an upper edge of the door or window frame, attaching a jamb diverter sheet to the wall at each side jamb, applying sealant to the door or window frame, placing the door or window frame in the opening, applying additional sealant along the top header, and attaching a header diverter sheet to the wall along the top header.