These types of fences are no more difficult to maintain than others. Ultimately, the material you choose to fill the slats of the fence will determine the level of maintenance required. For example, if you choose wood, you may stain or seal it to further get the colour or hue you prefer. In that case, you will likely have to complete yearly touch-ups, along with an annual cleaning. PVC fencing is a bit lower in terms of maintenance requirements, arriving already finished in the colour you prefer. However, it will still require proper washing at least once a year to ensure it is clean from dirt and debris.