Trex Fence Installation

Stake out your fence line six inches in from your property line, using 3-foot long wooden stakes and string.

Mark the location of the first post with spray paint and then measure 96 inches and mark the location of the last post.

Spray a line 2 1/4 inches in from the string line that runs parallel to the post marks.

Dig your postholes at the sprayed line to a depth of 30 inches, or deep enough to have a bottom below the frost line.

Lay a 6-inch layer of gravel or dirt in the bottom of the holes and insert the first post. The rough height above ground should be about 78 inches.

Fill around the post with concrete mix to about two inches below the top of the hole. Tamp the concrete mix to remove air bubbles. Check that the post is level and positioned next to the string, but not touching it, and then insert the last post and fill with concrete as well.

Let the concrete set according to the manufacturer's instructions before installing the fence rails and pickets.

Determine how much space you want at the bottom of the fence line and mark this point with a pencil on the inside of each post. Using the fasteners provided, attach a bracket to each post so that the bottom is flush to this mark.

Pencil a mark 68 inches up from the bottom of the lower bracket. Using the fasteners provided, attach the upper brackets so that their bottom is aligned with this mark.

Slide the bottom rails over the bottom rail insert and then place the assembled pieces onto the lower fence brackets. The rail insert is notched and should fit snugly over the bracket. Secure the bottom rail to the brackets using the 1 5/8 inch deck screws.

Notch one side of the first and last pickets at a 45-degree angle. This prevents the pickets from interfering with the brackets once in place.

Attach the first picket to the post using three 1 5/8 inch deck screws. Drill these through the picket and into the post, spacing them equally along the length.

Insert all but one of the remaining pickets into the slot at the top of the bottom rail until the 8-foot section is complete. Alternate their orientation in the rail so that they interconnect slightly.

Secure the last picket in the 8-foot section to the post, notching one side as you did the first to avoid interfering with the bracket. In total, you should have 19 pickets installed per 8-foot section.

Cut the top rail so that it fits between each post and place it onto the upper bracket. Secure the rail in place with 1 5/8 inch deck screws at each end.

Hammer a single finishing nail into the top rail at each picket to prevent movement if desired and place post caps on each post. These may be secured using adhesive or with a nail.