Attaching a Trellis to Cinder Blocks

Assemble the desired trellis if you are making it yourself or lay the commercial trellis in front of you. Measure the dimensions of the trellis and mark the measurements on the cinder block wall using measuring tape and chalk. Take into consideration the mature size of the plant you want to grow on the trellis when marking its location on the wall.

Check that the lines are level using a carpenter’s level or reposition if required. Step back and determine the locations of the mounting screws, based on the size and shape of the trellis. For instance, you will need screws at each corner and through the middle if attaching a rectangular trellis to the cinder-block wall.

Assign a helper to hold up the trellis against the wall, with its edges aligned with the marks on the wall. Step back and review the final placement of the trellis on the wall and make any adjustments as required. Lower the trellis and set it aside.

Cut off 1 1/8-inch pieces of PVC pipe with the hacksaw, using one per screw in the block wall. These pipes act as spacers between the wall and the trellis, allowing the climbing vines to grow around the trellis and receive sunlight and air.

Assign a helper to hold the trellis up against the wall again. Insert a PVC spacer behind one side of the trellis where you want to drill the hole, directly above the mark you made on the wall.

Drill a pilot hole through the trellis, PVC pipe and cinderblock wall using a drill and 3/16-inch masonry bit. Ensure the hole measures 1/4 inch deeper than the concrete anchor. Repeat the process to drill pilot holes through the remaining marks.

Drive concrete screws into the pilot holes through the trellis, PVC pipes and wall to secure it in place. Ensure each screw is tight so it supports the weight of the trellis and the climbing plant.