Replacement Caps For Discontinued Trex Fencing Posts

5x5 Post caps for Trex composite posts

Replacement Caps for Discontinued Trex Fencing Posts

These details will guide you through the process or ordering post caps if you are adding/replacing caps or filing a warranty claim for discontinued Trex Fencing post caps.

First, determine if the caps are the discontinued profile. The outer dimensions of Trex Fencing posts manufactured prior to 2010 are 5-1/2” x 5-1/2”. This profile was discontinued in 2009 and replaced with a 5” x 5” post. The post caps used for the larger post also were discontinued and the caps currently in production will only fit the 5” post. If post caps are needed for the discontinued posts, the current 5×5 caps can be used in combination with an adaptor that is set inside the cavity of the post and is attached with finish nails or screws.  The tops of the posts will need to be cut down and leveled to allow the bottom of the posts caps to sit at 2-3” above the top of the top rail.

Because the old post caps covered up a portion of the top of the old posts, it is likely the color underneath has not faded and dirt and grime may have accumulated. Much of that will be cut off when the old caps are removed, but you may need to clean the newly exposed portion of the existing post. The new post caps will require time to weather to look similar to the older Trex material.

Caps are still available in flat top and pyramid styles.

How to order new caps for discontinued posts:

If you are filing a warranty claim due to abnormal degradation of the post caps, contact Trex at 800-BUY-TREX (800-289-8739) to begin the claims process. Before filing the claim, read the Trex warranty to determine if the claim can be covered. If the claim is approved, Trex will provide a payment to you which you can use to purchase caps and adaptors from FDS Fence Distributors. We are the supplier for post caps and adaptors. You will need to give our associate of the sales order number provided by Trex to ensure you get the right materials and do not incur additional cost. 

If you are not filing a claim and simply need to buy new caps, contact FDS Fence Distributors directly. We are the supplier for the post caps and adaptors. Alert the FDS associate that you need caps and adaptors for discontinued posts, otherwise, you will not be able to attach your caps properly. Contact us at 877-700-8739 or FDS@TrexFencing.com.

NOTE: Do not order the post caps through our online store. Caps available through our online store do not include adaptors.

5-1/2" x 5-1/2" Post Modified for 5" x 5" Cap

5x5 Post caps for Trex composite posts

Post Cap Style

Flat Top Post Cap for Trex Fencing Post in Saddle color
Flat Top
Pyramid Post Cap for Trex Fencing Post in Saddle color
Crown Post Cap for Trex Fencing Post in Saddle color

Installation instructions for replacing discontinued 5.5″x5.5″ Trex Fence post caps with 5″x5″ post caps.

A picture depicting the use of adaptors for new Trex fence posts replacing discontinued Trex fence post caps

Do you need replacement post caps?

Call or email to purchase 5×5 post caps.

An adaptor for the 5" x 5" Trex post caps used to attach caps to obsolete 5.5" x 5.5" posts
Post cap adaptor sits inside posts. New caps sit on top of adaptor.
Replacement Caps For Discontinued Trex Fencing Posts