How do you strengthen a Trex fence?

Trex fences that are installed properly have tremendous strength. They are able to withstand high winds and incidental contact that might otherwise damage other fence materials. If the fence needs to be strengthened even further, there are several methods. The posts are made of a thick, durable composite so they do not require reinforcement except for the hinge side of a gate. Because they are hollow, the posts can be stiffened with a 3-1/2" x 3-1/2" steel post placed inside. Each section of the Trex fence contains four brackets with four screws per bracket, so the performance of the attachments is already very strong. However, to strengthen the rail attachment, you can use screws with a higher sheer strength (the standard screw is #7 wood exterior screw) such as a stainless (marine grade) screw or an aircraft-grade screw. Shortening the span between the posts will also increase strength and adding a bottom rail as a mid-rail will also add tremendous strength. Our install guides can offer more details on general installation of Trex Fencing.