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The new QUAD Window & Door System picks up where the WINTeQ System left off, delivering the toughest sealant, foam and butyl flash tape ever developed.

Led by the new QUAD MAX, the revolutionary 3-in-1 interior, exterior, and bedding sealant, the QUAD Window & Door System is the ultimate barrier against air and moisture.

See below for product documentation and jobsite support.

QUAD Window & Door System Features

  • The Toughest Barrier Against Air & Moisture
  •  Maximize Energy Efficiency & Performance
  • For Both New & Replacement Windows
  • Backed by 15-Year Warranty Available For New Construction if You are an OSI Certified Installer
  • QUAD MAX Exterior, Interior & Bedding Sealant Delivers Superior Performance
  • QUAD Foam Low Pressure, Closed Cell Window Installation Foam Delivers Superior Protection
  • Butyl Flash Rubberized Self Adhering Flashing Tape Provides Weather Tight Seal




QUAD Window & Door System

Product & System Brochures

Install With Confidence – Get Ongoing Knowledge and Support From the Professionals at OSI®.​