Why OSI
OSI takes the best practices from years of experience in new-home construction and brings that expertise to replacement windows. WINTeQ™ Window Installation System is the cornerstone, a completely compatible line of products that remove the guesswork from replacement window installation.
The First Complete & Compatible Window Installation System
WINTeQ™ Products for New Installation
Download a sample copy of our
WINTeQ™ System Warranty.
The OSI® WINTeQ™ system for new window installation simplifies the process of selecting compatible, reliable products, making the window installation process as easy as three simple steps: Flash, Seal, Foam. Not all installers currently execute all three steps in window installation. But, with the compatibility and performance of the OSI® WINTeQ™ system, these three simple steps lead to proper window installation, with a decreased risk of water and moisture penetration and increased energy efficiency and performance. See our New Construction Brochure for further instructions. And, when applied in accordance with recommended procedures and industry standards, Henkel Corporation, the makers of OSI WINTeQ™Sytem, provides a 15 year warranty.
