Subsills

Definition

Subsills are sill plates used to support the bottom of a window frame.

Purpose

The purpose of subsills is to provide a stable and level base for window frames, ensuring proper installation and sealing of windows.

Examples of Use

• Residential windows use subsills to secure the window frame and prevent water infiltration.
• Commercial buildings incorporate subsills in window installations to maintain structural integrity and energy efficiency.
• Historical restoration projects often replace or repair subsills to ensure the longevity and performance of windows.

Related Terms

• Window Sill: The horizontal structure at the bottom of a window opening.
• Sill Plate: A horizontal beam at the bottom of the wall framework to which wall studs are attached.
• Flashing: Material used to prevent water penetration at joints and window openings.

Notes

Proper installation of subsills is crucial for preventing water damage and ensuring the overall performance and longevity of windows.