Support Warranty

Product Warranties

We are Pleased to Offer a 20 Year Limited Warranty with all of our Monarch Decking and Railing Products.

Do You Already Own a Monarch Deck and/or Rail Systems and Need to Complete a Warranty On-Line?

The warranty requires that “In order to be eligible for the Limited Warranty, you must complete and submit the warranty card or the on-line application to Green Tree Composites, LLC within 30 days of purchase.” Click here to complete the warranty card on-line.

If you choose not to fill out the warranty card online, you must submit it by mail to the following address:
Greentree Composites, LLC
812 South Riverside Avenue
St. Clair, MI 48079

M-F 8am - 5pm EST  Warranty Claims Reporting, call 877.666.2742

In order to expedite the warranty claim process, please have the following available prior to reporting your claim:

  • Place and date of order/purchase
  • Copy of original sales receipt
  • Color and quality description of the affected product
  • Digital or hard copy product photos