Will a fence block wind?

Depending on the design, a fence will block wind to a certain extent. Privacy fences are better at blocking wind, due to the fact that there are no spaces in between boards. The downside is that privacy fencing tends to act a sail and may be damaged by strong winds. Trex manufactures a high-end full privacy fence system that offers a list of virtues in addition to blocking wind. In fact, Trex has been tested to withstand hurricane force winds up to around 140 mph! Of course, it is important to remember that a fence only blocks wind if you are relatively close to the fence. Wind will travel over the fence and into your yard no matter the material you use. 

 Trex perform better overall in wind than most other fence systems, short of a stone wall. Vinyl fencing, for example, quite often will blow out in high winds. Wood fencing may break, especially if using a 4x4 post. The density and flexibility of the material give Trex the ability to take absorb the buffeting of high winds with lower instances of damage. Feel free to visit The Virtues & Benefits of Trex to better understand the value of Trex Fencing in addition to blocking wind. 

Note: Although Trex has performed quite well in high wind events, wind suppression is not the primary intended purpose of any fence system.  It is important to consider what function you need your fence to serve and then find the fence system that best meets those needs. Fences, including Trex, do not cover wind damage in the warranty. High winds are localized environmental event and can act differently than in a test environment. The purpose of the wind load test is to give consumers the knowledge of how Trex fencing can perform overall in high winds.