How to install a shadowbox fence panel

Written by b. ellen von oostenburg
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How to install a shadowbox fence panel
Shadowbox fence panels can be bought prefabricated. (Jupiterimages/ Images)

Shadowbox fences are handsome in appearance, offering great curb appeal from the street and plenty of privacy behind the fence. Of course you can build a shadowbox fence from scratch, but if you are short on time but long on the desire to do it yourself, then prefab shadowbox fence panels are the way to go. With a little planning, you'll find they are rewarding to install.

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Things you need

  • Prefab shadowbox panels
  • Hand posthole digger or automated auger
  • Shovel
  • Gravel
  • Quick-set Concrete
  • 10 cm by 10 cm by 2.4 m (4 inch by 4 inch by 8 foot) treated posts
  • Tape measure
  • Pencil
  • Small nails
  • Hammer
  • String
  • Line level
  • Metal square
  • Circular saw
  • Assorted blocks of wood
  • 15 cm by 15 cm by 30 cm (6 inch by 6 inch by 12 inch) wood block plus board, 75 cm (2 1/2 feet)
  • Box of 6.5 cm (2 1/2 inch) nails

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  1. 1

    Dig post holes 2.4 m (8 feet) apart and 45 cm (18 inches) deep. Use a hand post hole digger if there aren't many holes to dig. Otherwise, rent an automatic auger from an equipment rental facility.

  2. 2

    Shovel in about 8 inches of gravel, set the post in and shovel in wet quickset concrete mix around the post. Set the carpenter's level against one face of the 10 cm by 10 cm (4 by 4 inch) post to check for plumb -- that the post is straight up and down -- and then place the level against an adjoining face of the 10 cm by 10 cm (4 by 4 inch) post to again check for plumb. The concrete should start setting up in a minute or two.

  3. 3

    Measure up from the top of the set concrete to 1.75 m (5 feet 10 inches). Make a mark, then lay the metal square across one face of the 10 cm by 10 cm (4 by 4 inch) post and mark a line. Tap a small nail into the line, tie a string around it and unwind the string while walking down the line of posts. Hook a line level -- a small plastic level that hooks on to the string -- onto the string and move the string up and down until the line level indicates the string is level. Mark a line on the face of the post. Tap a small nail into the post at the line and tie the string taut around the nail.

  4. 4

    Place the metal square against each post right along the string and draw a line. Turn on the power saw and cut each post off along the line. The posts are now all at the same height.

  5. 5

    Bring over the first panel of shadowbox fencing and lean it against the first two posts. The three horizontal rail boards that the pickets are nailed to should overlap each post at either end by 5 cm (2 inches). Lay down the 15 cm by 15 cm (6 by 6 inch) block of wood with a board set at a right angle to create a simple lever and fulcrum. Raise one end of the fence panel up so the top of the picket is 5 cm (2 inches) above the height of the first fence post. Set a block of wood under the bottom of the panel and do the same at the other end.

  6. 6

    Pound the top rail to the face of the first post. Use just one nail. Lay a carpenter's level along the horizontal top rail. Set up the lever and fulcrum at the opposite end of the panel and step on the piece of board until the fence panel rises to level and nail the rail to the face of the second fence post. Pound in two nails per rail per post.

  7. 7

    Repeat Steps 5 and 6 the full length of the fence line. Check that each fence panel is level and that each subsequent fence panel is level with the previous one by matching up the ends of the rails and then setting the level straddling the two rails where they meet.

Tips and warnings

  • Before starting to dig post holes, be sure to call the utility companies to have them come to check for underground lines.

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