How to attach fencing to existing concrete block wall

Written by john walker
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How to attach fencing to existing concrete block wall
The process applies to connecting any type of fence to a block wall. (Jupiterimages/ Images)

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.

Skill level:

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Things you need

  • Marker
  • Hammer drill
  • Masonry drill bit
  • Expandable cement anchors
  • Screwdriver drill bit
  • Bracket

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  1. 1

    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 10 by 10 cm (4 by 4 inch) wood post.

  2. 2

    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.

  3. 3

    Repeat Step 2 to position brackets halfway down the length of the pole and near the base of the pole.

  4. 4

    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.

  5. 5

    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.

  6. 6

    Attach the fence support pole to the brackets with screws or nails as needed.

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