It depends on the soil. In certain parts of the country dirt can be packed around the post if the hole is deep enough. Although, cement is recommended in a hole which is dug twice the diameter of the post. Some route the bottom of the post so cement can flow into the post.

Vinyl fence is produced to stand up to specified wind loads if installed according to instructions.

Vinyl will break with a significant impact such as an automobile. Very cold weather also makes vinyl slightly less flexible and more brittle. Vinyl expands and contracts because of heat, unlike wood which expands because of moisture. A contractor will allow for expansion or contraction in the installation process.

Your fence has a high level of UV inhibitors (Ti02) which prevents the sun's rays from turning your fence yellow. You must keep your fence clean as grime from the elements can turn many colors.

A fence can be mechanically fastened together using screws to assemble the posts, rails and pickets; or, it can be routed and the pieces are inserted into holes equally spaced from the edges so the fence is "neighbor friendly" or identical in appearance from either side.

The ingredients to make vinyl are mixed, heated and extruded into lineals similar to lumber. These pieces are cut to size, holes are routed and assembled to the desired fence style.

A predetermined mixture of polyvinyl chloride, stabilizers, colorants, UV inhibitors and impact modifiers.