Drafty Windows? Poor Energy Efficiency?
Upgrade to modern standards with the Slim Line Insulating Pane (SLIP™)—a cost-effective solution to enhance your home's comfort, energy efficiency, and style without replacing your windows.

SLIP™ adds a tempered glass pane to your existing sash, simulating double-pane windows while preserving the charm and value of your original wood windows. Its sleek, low-profile frame integrates seamlessly into various window styles, including single-hung, double-hung, casement, and picture windows. Unlike storm windows, SLIP™ is a permanent, hassle-free solution.

Why SLIP™?

Energy Efficiency: Comparable to insulated glass units without the risk of fogging or seal failure.
Cost-Effective: A more affordable alternative to full window replacement.
Historical Preservation: Retain the original look and functionality of your windows.
Durable Design: Solid construction with minimal maintenance needs.
Flexible Options: Interior or exterior installation with clear, obscure, or low-e glass.

Proven Performance

Energy tests by the University of Oregon show that SLIP™ reduces window energy costs by 72.9% on average:

Single-pane windows: 454 therms and 474 kWh/year
Single-pane + SLIP™: 123 therms and 129 kWh/year

How to Get SLIP™

Chosen Wood Window offers SLIP™ installation services and DIY Kits for contractors. Kits include everything needed for a seamless installation, plus detailed video tutorials.

Upgrade your windows with SLIP™—modern efficiency meets timeless design. Visit us online to learn more or order your custom kit today!

Click to see the Energy Results and Product Studies
Click to see Energy Testing on the SLIP™
Reports & Case Studies
SLIP™ FAQ

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