Before installing concrete deck pier blocks it is imperative to first install
concrete footing pads below the frost line for your local area. The depth of a
footing hole can vary anywhere from 12 to 60 inches depending upon where you
live. In New Hampshire for example, the frost line can run as deep as 36 to 48
Installing Deck Pier Blocks
To install a precast concrete deck pier block, first dig the hole for the
concrete footing pad. Again, make sure it is deep enough so that the base of the
hole sits below the frost line for your climate region. In addition, the
diameter of the hole should be approximately 12 to 24 inches in diameter. It
should also be wider at the base of the hole.
Then pour premixed concrete into the footing hole until the concrete is within 2
to 3 inches of the top of the hole.
Next, while the concrete footing pad
is still wet and workable, place the precast concrete deck pier block on top of
the poured concrete footing pad. Work the base of the deck pier block into the
concrete footing several inches by pushing and twisting it downwards.
Plumbing and Aligning Concrete Deck Pier Blocks
Again, it is imperative that the concrete deck pier block be properly aligned
and level. Use a torpedo level to make sure the deck pier block is plumb and
level on top.
Use string, wooden stakes, and a plumb bob to properly align the concrete deck
pier block. Wrap string around the wooden stakes that are positioned so that
they outline the exterior frame of the deck. The string should be situated so
that it sits approximately 12 to 18 inches off the ground and is centered over
the outer deck edge footing pads. Position the plumb bob just under the string
and over the concrete footing pad area to locate the exact position and
alignment of the concrete deck pier block. Gently tap the deck pier block to put
it in proper alignment relative to the plumb bob. Also make sure the notches are
properly aligned to support the deck framing correctly. The center of the
precast concrete deck pier block should sit directly underneath the plumb bob.
Repeat this process for all the required concrete deck pier blocks and then
allow them to set up for 24 hours before continuing on with building your deck.
For help on building a new Deck, see HomeAdditionPlus.com's
Deck Installation Bid Sheet.
Deck Installation Bid Sheet
will teach your how to hire the right deck contractor, and help to
ensure that your deck project is completed on time and budget.
How to Finance your Deck Project
can help provide funds for your new home improvement project if
financing is required.
Additional Deck Information