Frequently Asked Questions

Trex Fencing offers superior durability and performance that you can’t get from wood. Trex Fencing resists termites, won’t rot, warp, or splinter and never needs staining or painting. What’s more, Trex Fencing is made from 95% recycled materials (reclaimed wood as well as recycled plastic), making it an environmentally-friendly choice you can feel pleased about.

Understanding the differences between a stockade composite fence and an innovative high-performance Trex fence is an important factor in distinguishing the benefits of Trex.

Stockade Composite Fences (Dog-Eared). These traditional types of fences use backer rails and pickets screwed or nailed to the rails. Fasteners are visible on these types of fences. True privacy is hard to obtain because the expansion of the material at higher temperatures requires the pickets to be gaped during installation. The gap becomes even more pronounced when the temperatures drop and the material contracts. A board-on-board (overlapping picket) design could be used, but that creates additional expense and still won’t fully close gaps if the boards warp. Since backer rails are usually exposed on one side of the fence, determining which side will face the neighbors could lead to difficult conversations. The typical recommendation for stockade-style fences is to install them on 6′ post centers, which adds costs for posts and causes extra time and expense for labor. Stockade composite fences are usually not tested or backed with product engineering.

Innovative High-Performance Trex Fencing. The innovative design of Trex Fencing includes a board-on-board appearance with top and bottom fascia rails, capped with an attractive shadow-line. The fence’s innovation isn’t just about appearance — it is easy for do-it-yourselfers or professionals to install. The form and function of the components were also carefully considered during development. For example, the brackets allow fasteners to be hidden; also, the interlocking picket system provides complete privacy and eliminates warping while strengthening the fence. Trex Fencing is installed on 8’ post centers reducing additional product cost and extra time for labor.

With wood fences, maintenance costs add up over time. Although Trex Fencing costs more initially, you’ll never have to sand, stain or paint your Trex Fence. Over the life of your fence, those reduced maintenance costs add up to a greater value than wood – not to mention the value of all the time you get to spend enjoying your fence rather than working on it.

Trex Fencing is made from 95% recycled materials, including reclaimed wood and sawdust as well as recycled plastic from many common household items, such as the plastic wrap on packaging for paper towels and toilet paper, dry cleaner bags, newspaper bags, grocery and shopping bags. Trex annually keeps more than 400 million pounds of plastic and wood scrap out of landfills. That makes Trex one of the largest plastic film recyclers in the U.S. In fact, 100′ of Trex Fencing contains about 120,000 recycled plastic bags.

Yes. The weathering process is completely natural and doesn’t negatively impact the product. Typically, several weeks after installation, Trex Fencing will fade to a lighter color.

Natural Weathering. The Trex product receives heavy pigmentation during manufacturing to allow it to settle into a lighter shade when weathered. Under normal conditions, twelve to sixteen weeks of exposure to sunlight and rain are typically required for Trex to achieve its weathered color. This process is completely harmless to Trex products and does not affect the durability. The post caps and top rail will fade the fastest because of their direct exposure to the elements. Due to their vertical orientation, the pickets and post faces may take considerably longer to fade. The “after-weathering” color of Trex may be different from the colors shown on the Trex Colors page.

Color Variation. Due to the nature of composite materials, it should be expected that color variation between individual components may occur and, in some cases, may be significant. Trex Fencing is produced from a variety of recycled plastics and wood fibers, which absorb pigments differently. While all colors of Trex Fencing may contain variation, it is typically more pronounced with Saddle and Winchester Grey. The three colors of Trex Fencing will lighten over time and color variation may become less noticeable. However, weathering will not eliminate all variation. Where possible, extra care should be taken to install similarly pigmented pickets in a section to minimize the appearance of variation. Color variation and fading do not affect the integrity of the product and are not covered under the Trex Warranty.

Trex Fencing can handle any climate: hot, cold, humid, or dry. The unique formula of Trex makes it a durable, long-lasting outdoor building material.

All composite material will expand and contract with changes in temperature. If properly installed, Trex components are manufactured in a manner to accommodate these fluctuations. Gate hardware is also easily adjustable and may require some fine-tuning as temperatures change.

Trex Fencing has a 10-year commercial product warranty. Trex Fencing also has been tested and proven with architectural engineering. Trex is selected as the product of choice for a variety of reasons including low maintenance, durability and strength, aesthetics, and green values. For architects and engineers, please reference our Resources page.

Our commercial clients number in the hundreds. From dumpster or utility enclosures to privacy screens for commercial areas butting residential properties to security barriers for government facilities, Trex Fencing provides a solution that is far more affordable than masonry, and more durable and secure than wood or vinyl.

The Trex post is hollow and can slide over a support embedded in the wall. To ensure that the placement will not fail, it is important to evaluate whether or not the slab or wall is sturdy enough to support the fence.

It’s not recommended to attach Trex Fencing posts to a concrete surface/slab; however, if it needs to be, we have z-shaped concrete posts mounts for fences 6’ and under, and heavy-duty concrete posts mounts for taller than 6’. It is best to core drill at least 30” to put a Trex post into the ground.

When mounting on a concrete wall it is important to evaluate the amount of sheer force that will be applied on each post. If you are in a high wind zone or the post will have a gate swinging on it we recommend that the post is embedded in the concrete or is slid over a steel post that is embedded. The best way to install a fence on a retaining wall is to embed a steel post (a 2-3/8″ Schedule #20 galvanized steel post or a heavy-duty post stiffener) directly into the wall and slide the Trex post over it. If using a 2 3/8 post fill the post with concrete to stiffen it. For ease, attach the brackets before pouring concrete into the post.

If a Trex Fencing post needs to be placed on a concrete surface or slab, it is important to evaluate the amount of sheer force that will be applied on each post as well as the quality of the concrete to be mounted on. If you are in a high wind zone or the post will have a gate swinging on it we recommend that the post is embedded in the concrete or the concrete is cut so that the post can be embedded directly in the ground 30” min. post depth.

Just like lumber, Trex Fencing materials can be cut to any length or height. Suggested blade type: carbide tip metal. Recommended power tools to cut materials: skill saw and miter saw.

Trex Fencing can be angled with angle adaptors. The angle adaptor attaches to the standard fence bracket for a 22.5-degree angle. When doubling the angle adaptors on the back of the fence bracket, this allows a 45-degree angle. Refer to the Trex Fencing Installation Guide.

Trex wood plastic composites are not structural and should only be used for intended design.

Trex Fencing, when properly installed for approved applications, is code compliant. Trex Fencing has been used on numerous residential, commercial, and government projects with heights ranging from 3’ to 12’ tall. As always, check with your local codes for approved heights. Trex Fencing engineering documents are available under Resources/Technical-data.

Trex Fencing is 50-70% heavier than comparable lumber. The durability of Trex® Fencing provides a superior product that will last and maintain value for the next 25 years and more.
You can check out the weight of the individual components by viewing our Product Weight document. https://www.trexfencingfds.com/resources/technical-data/

Managing operating costs is a perpetual challenge for community association budgets. Reducing annual costs on fence maintenance will allow Property Managers and Association Board Members to allocate funds to other items within the association. Homeowner Association CC&Rs are important for community aesthetics and to ensure the right products are installed. Since Trex Fencing's product composition is made of 50% wood / 50% plastic, it is a perfect alternative if the association restricts materials to wood only or vinyl only fencing. Its 25-year limited residential warranty, stunning look, and innovative neighbor-friendly design will give value to homeowner or condominium associations for years to come while almost eliminating recurring maintenance expenditures.

Considerations for associations:

  • Over time, Trex requires less maintenance and product replacement than wood or vinyl
  • More durable than competing materials
  • 25-year non-prorated, industry-leading residential warranty
  • True full privacy fence and available matching gates
  • Enhanced curb appeal
  • Rich natural colors
  • Distinctive composite smooth finish
  • Neighbor-friendly design popular for shared lines
  • Board-on-board style provides aesthetic appeal
  • Can be built to heights up to 12′ tall
  • 95% recycled materials, “Go Green”

All the technical information regarding Trex Fencing are in Resources. Architectural drawings, installation guides and videos, testing results, and more are there. If you can’t find what you need, please call 877-700-8739. You’ll be connected to your dedicated Regional Account Manager who can assist as needed. Hours are M – F, 9am – 7pm EST.

Welcome to the industry-leading product warranty that provides comfort and peace of mind. To register your Trex Fencing warranty, go to the following link:

Trex Fencing can be installed by basically anyone. As long as you have basic construction knowledge, you can install this innovative fence design. If not, then Hire A Fence Contractor to help with installation. To know ahead of time how Trex Fencing is installed, refer to the Trex Fencing Installation Guide.

Trex Fencing is a low-maintenance fence, not a maintenance-free fence. Little annual maintenance may be necessary. For additional information, please refer to the Care & Cleaning Guide.

Trex Fencing is a system anyone with basic construction understanding can install. Please check out the Trex Fencing Installation Guides and Videos to help determine if you would like to DIY or Hire a Professional. Trex Fencing works with Fencing Professionals nationwide, and in Canada. We can help connect you to a local installer if one is available in your region. Feel free to call us at 877-700-8739 to be connected to your dedicated Regional Account Manager. Hours are M – F, 9am – 7pm EST.

A standard Trex Fencing section requires only 24 fasteners for the fence brackets, pickets, and top rails. The recommended fastener to use for these items listed is a 1-⅝” exterior wood screw. These types of fasteners can be purchased at any local lumber yard.
For non-standard Trex Fencing sections (heights 9’,10’,11’, & 12’), a self-tapping fastener is required for attaching fence brackets because of the steel post insert. Refer to the Trex Fencing Technical Center for required fasteners and materials for non-standard Trex Fencing heights.

Trex does not require painting or staining. However, if painting or staining is desired, the material is porous and will accept either when applied. Before applying completely, test the paint or stain on a small piece of material to make certain you achieve the desired result. Please note that applying paint or stain may void the warranty.

Trex composite components do not react with salt water so they will not degrade near bodies of salt or bracket waters. High humidity areas also do not typically negatively affect the composite material. However, the necessary metal components in the fence may be affected adversely by your local climate. We do not recommend using the standard zinc-coated steel fasteners used for Seclusions or Horizons in these environments. Alternatively, use stainless steel instead. Consult with local engineers or authorities to determine if your area is susceptible to high levels of metal rust or corrosion.

Trex Fencing can not be used structurally as a retaining wall; however, Trex Fencing can be installed on top of a retaining wall. The recommended retaining wall dimensions are a minimum of 8” wide with a minimum 12” tall stem wall and footer. Sleeve a Trex Fencing post over a 2-3/8” Scheduled 20 chain link post. Set the chain link post in a 3” core cut with an 8” minimum post depth or set the post into the concrete during the pour. Do not exceed setting chain link post centers over 96” on center, though setting them narrower will eliminate any chances of setting post centers too far for the Trex Fencing rails. For additional information, please refer to the drawing Trex Fencing Post Sleeved Over Embedded Pipe.

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