How to Install Posts on a Concrete Patio


Concrete is typically a very strong and durable building material, and for that reason is one of the most commonly used materials for features like walkways and patios. For a number of reasons ranging from upper levels to roof structures, the addition of posts may be required for structural members. The use of modern post bases is the easiest, cleanest and most attractive way to properly fasten posts to a concrete floor or surface. Post bases make post-to-concrete installation a task that is usually easy enough for just about anyone to complete using common tools.

Step 1

Measure and mark the center of the post locations on the patio using the tape measure and lumber pencil.

Step 2

Set a post base centered over the post mark made in Step 1 and trace the anchor bolt hole.

Step 3

Center the drill on the anchor bolt mark and drill a vertical hole. The drill bit size should be the same diameter as the anchor bolt you are using. Drill the hole about a 1/4-inch deeper than the length of the anchor bolt.

Step 4

Clear any dust and debris from the hole using the vacuum cleaner.

Step 5

Set the post base on the concrete centered over the drilled hole and push in the anchor bolt. You may need to tap the head of the bolt using the hammer until the bolt washer is against the post base.

Step 6

Turn the anchor bolt four to five times with the socket wrench to activate the anchor bolt's expansion components.

Step 7

Set the post in the post base and fasten with either nails or bolts (depending on the post base type); bolt type bases will require drilling pilot holes through the post before bolt installation..

Step 8

Repeat Steps 2 through 7 on remaining post locations.

Things You'll Need

  • Metal post base (size depends on post size)
  • Concrete anchor bolt
  • Electric hammer-drill with concrete drill bit (size depends on anchor bolt size)
  • Socket wrench
  • Vacuum cleaner
  • Hammer
  • Hex bolts, nuts and washers (amount depends on post base)
  • Lumber pencil
  • Tape measure


  • "Working with Concrete"; Rick Arnold; 2003

Who Can Help

  • Anchor Bolt Installation
Keywords: post anchor, concrete patio post, install post on concrete

About this Author

J. Cavan Barry is an architecture student with over a decade of experience in the general construction field, and four years in architecture. Barry also has nearly a decade of automotive repair experience and is an avid auto enthusiast. After finding an interest in creative writing, he began writing a novel and recently finished the first draft.

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