Can I use concrete deck blocks instead of footings? After all the deck blocks are properly set and fastened, the next step is to install the joists to give the deck its shape and secure the decking boards. To secure each deck block, use a power drill and fasten into the wooden blocks and/or concrete around the deck block using 3-inch deck screws. Using a level, check the block to make sure it is level, adjusting as needed and adding more soil or dirt if necessary.įor concrete deck blocks, add leveled blocks of wood around the concrete, two to each side, before beginning work. When inserting the deck blocks, remove any rocks or dirt ensuring that each block sits firmly in place. Now, measure and mark the position of each deck block at a maximum of 16 inches apart. If the deck is larger than 12 feet in either direction, it is advisable to also lay out joist lines. Next, lay out the plank lines to form a rough frame of the deck. Instructions for setting deck blocks may vary depending on the type of deck blocks being used and the size of the deck being built, but the general instructions are as follows.įirst, prepare the area where the deck blocks will be installed by clearing away any grass or organic material and flattening the dirt or soil. Setting deck blocks is an important part of building a deck, as it provides a stable, level base upon which the joists with which the decking boards will be installed can be placed. The blocks should be adjusted as you are building the deck, as pressure treated lumber shifts and compacts over time, so that the deck is still level and supported. Deck blocks also need to be placed so that the tops of them are slightly lower than the framing for ledger board attachment. When placing deck blocks, it is important to make sure they are set in a secure place, such as in concrete, and that they are level among themselves.Īdditionally, it is important to lay a bed of crushed stone or gravel on top of, and around each block to ensure proper drainage. When the deck frame is sufficiently supported and secured, the blocks do not have to be completely level- they just need to provide stable and adequate support. Generally, deck blocks should be placed no more than 4 feet apart and should have at least 2 feet of clearance between them and the structure of the deck. Where should deck blocks be placed?ĭeck blocks should be placed in strategic locations around the perimeter of the deck whenever possible. If choosing to use a support post beneath the deck, check the manufacturer’s guidelines for the appropriate space between blocks. Building codes may have specific requirements for the spacing of deck blocks, as well as the size of the footings and the type of material used. When installing deck blocks, it is important to check the local building codes for your area to ensure you are building to code. Generally, if using wooden deck blocks, a minimum of 2 inches of space should be maintained between the blocks in order to ensure proper support.Ĭoncrete deck blocks can typically be installed closer together, usually 1 to 1-½ inches apart. The space between deck blocks should depend on the type of material and the load-bearing capacity of the deck. How much space should be between deck blocks? What is the standard distance between deck posts?.How far apart do my deck footings need to be?.What is the correct gap between deck boards?.How do you lay decking ridges up or down?.How much gravel do you put under deck blocks?.Do you need to put anything under deck blocks?. Can I use concrete deck blocks instead of footings?.How much space should be between deck blocks?.If it is not level, use a piece of scrap lumber and a sledgehammer to level it out effectively. You may need to adjust the spacing depending on the size and weight of the deck.įinally, use a level to ensure the deck block is sitting level and is secure. Do your best to ensure uniform spacing across the deck. When installing your concrete deck blocking, pay attention to proper support at any joists/beams, ledger board, and post locations. Generally speaking, 12-inch spacing along the perimeter is ideal, with six inches between the perimeter and first row of blocking, and then four to six inches between the successive rows.Īdditionally, some deck construction codes may require closer spacing. The ideal spacing for concrete deck blocking will vary based on the size and load of your deck. It is important to install your concrete deck blocks correctly and evenly spaced for your deck to be structurally sound and safe for use. Concrete deck blocking is an essential part of building a strong and durable deck.
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