- Press a bracket against the wall. The bracket should be the proper size and shape to match the support posts of the fence, such as a squared U-bracket for a 4-by-4-inch wood post.
- Slide the bracket up until it is almost at the top of the wood post and the screw holes in the bracket line up with a mortar joint in the cement block wall. Mark the position of the screw holes through the bracket onto the wall with a marker.
- Repeat Step 2 to position brackets halfway down the length of the pole and near the base of the pole.
- Drill pilot holes into the mortar joints with a hammer drill and a masonry drill bit. The proper-sized drill bit is typically included with the purchase of expandable cement anchors.
- Press the expandable anchors through the screw holes in the brackets and then into the pilot holes in the wall. Drive the anchors into the wall with a screwdriver drill bit attached to the drill. The motion of screwing in the anchors will expand the anchors to firmly grip the wall.
- Attach the fence support pole to the brackets with screws or nails as needed.
How to Attach Fencing to Existing Concrete Block Wall
Anchoring a fence to a wall ensures that time will not allow the fence to start to sag. Most exterior walls will have a wood frame making the anchoring of the fence relatively simple. A few additional steps are required to secure a fence to a block or cement wall. The same type of hangers are used to anchor a fence to a block wall as to secure the fence to a wood wall. The only difference is that the cement or block wall requires the use of a hammer drill and cement anchors.