Window Sill Assembly with Integrated Foil Drainage
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Solution Overview
Problem
When windows and doors are placed on the inside wall, ensuring effective drainage of water and moisture to the outside of the outside wall is challenging, as traditional methods fail to prevent water from penetrating behind the outside wall, compromising insulation and potentially damaging the interior wall.
Innovation Solution
A window sill assembly with a frame that includes a rear segment, side segments, and a front profile, where a foil or film sheet material is integrated to collect and direct water to a drip zone, preventing it from running down the outside wall and ensuring watertightness by guiding it to the outside.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the window is placed on the inside wall to improve insulation and airtightness, then the insulating effect is improved, but water penetration behind the outside wall increases
Solution Approach 1:
The window sill assembly is divided into multiple functional segments: a frame with rear and side segments for structural support, a front profile for water collection, and a foil layer for waterproofing. This segmentation allows each component to address specific aspects of the water protection problem while maintaining the overall insulation benefit of interior window placement.
Solution Approach 2:
A foil or film sheet material is introduced as an intermediary waterproofing layer between the window sill and the wall structure. This foil acts as a mediator that captures and redirects water before it can penetrate behind the outside wall, enabling interior window placement without compromising water protection.
2Ease of manufacture
If traditional window sill drainage is used, then water drainage is simple, but water runs down the outside wall causing streaks and damage
Solution Approach 1:
The drainage system is extended into a new dimensional space by incorporating a foil layer that protrudes beyond the front profile of the window sill. This creates an additional drainage plane that directs water away from the outside wall surface, preventing streaks and damage while maintaining simple manufacturing processes.
3Object-affected harmful factors
If a foil sheet material is added under the window sill to prevent water penetration, then water protection is improved, but the device complexity increases
Solution Approach 1:
The frame structure is designed to serve multiple functions simultaneously: it provides structural support for the window sill, creates mounting points for the foil layer, and integrates with the building's existing framing system. This multi-functionality reduces overall assembly complexity despite adding the foil waterproofing layer.
Solution Approach 2:
The foil sheet material is nested within the frame structure, with the frame's rear and side segments holding the foil in place. This nesting arrangement allows the waterproofing layer to be integrated into the existing window sill assembly without requiring separate complex mounting systems.
Data Source
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AI summary
Window sill assembly comprising a frame and a window sill, wherein the assembly is provided so as to extend over an outside wall and at least a part of a cavity wall, wherein the frame comprises at least a rear segment and two side segments which are provided to support the window sill respectively at the position of its rear side and at the position of its sides, wherein the frame further comprises a front profile which is provided so as to extend at least partially over the outside wall for the purpose of supporting a front side of the window sill, wherein the window sill is provided at the position of the front side with a drip zone, all this such that water can be discharged via the drip zone from a position on the front profile, wherein the window sill assembly further comprises a sheet material which extends under the window sill, wherein the sheet material is connected on the rear side and the sides of the frame and extends to a position at the front profile.