Jump to main content
Color Match
OSI Quad Max Window Door & Siding Grey Colored Cartridge

Born on
the jobsite

Explore Product Range
image us osi homepage stage mobile

OSI Presents:
THE TOUGHEST

Stories that honor what you do to get the job done: long days, hard weather, no stopping. You’re working through the elements, and we’re right there with you.
View OSI's Hero Stories
OSI-50-50-image

Explore
Color Match

OSI makes it easy with our simple-to-use tool that cross-references more than 9,600 manufacturer color-coded products with our three-digit color code.
Explore Color Match
us osi choosing a construction sealant stage image

Siding

The tough protection you expect with over 9200 color matches.

 
Teaser Image Siding

Window & Door

The system that defeats Mother Nature.

 
Teaser Image Window and Door
  • Sealants

    Sealants

    Seal it right with OSI sealants. They'rebuilt for any job, from siding to roofing. Trust OSI for premium solutions that protect your work and reputation. 
  • Adesives

    Adhesives

    For superior adhesion, OSI got you covered. Our construction adhesives are expertly formulated and designed by pros, for pros. 
  • Foam

    Foams

    Foam gaps to cracks, OSI foams provide superior insulation and sealing for any project. Reliable performance ensuring they withstand the test of time. 
  • Tapes

    Tapes

    OSI tapes offer unmatched strength and professional reliability for all your sealing needs, from weatherproofing to surface protection. 
  • Sealants

    Sealants

    Seal it right with OSI sealants. They'rebuilt for any job, from siding to roofing. Trust OSI for premium solutions that protect your work and reputation. 
  • Adesives

    Adhesives

    For superior adhesion, OSI got you covered. Our construction adhesives are expertly formulated and designed by pros, for pros. 
  • Foam

    Foams

    Foam gaps to cracks, OSI foams provide superior insulation and sealing for any project. Reliable performance ensuring they withstand the test of time. 
  • Tapes

    Tapes

    OSI tapes offer unmatched strength and professional reliability for all your sealing needs, from weatherproofing to surface protection. 
Sealants • Adhesives • Foams • Tapes • Tapes

ALL NEW: OSI INSTALLATION GUIDE

Get the job done right with our comprehensive flashing installation guide.  With over 165 pages of content and 3D illustrations. 

  • Basic flashing procedures
  • New & replacement install methods
  • Building code references
  • Product information & more
Download Guide

How We’re Different.​
Customer Support​

High Performance Solutions that deliver confidence and ensure long-last results

Certified training and education for a job done right

Building science professionals to help troubleshoot jobsite challenges.

Recent Articles
All Articles
  • Technical Bulletin: Sealant Best Practices

    Sealant application tips that ensure long-term job performance.  

    ...
    Read Article
  • Understanding How Moisture Can Impact Your Installation

    Why you might want to check moisture content in natural wood trim before installation 

    ...
    Read Article
  • North Georgia Tackles Big Challenges with OSI

    Find out how partnering with OSI helps Ted Kirk protect his company's reputation. 

    ...
    Read Article
Install With Confidence – Get Ongoing Knowledge and Support From the Professionals at OSI®.​
OSI Newsletter
General Inquiry

OSI Products

OSI Tough

OSI Special

OSI Trainings

Social Media

© 2024 Henkel Corp —  all rights reserved.

You are on a United States website