![]() Second, the deck surface should not be greater than 3 feet above the ground to ensure that the blocks can provide enough support. This will provide stability and extra support for the deck. The blocks should be placed every 4 feet along the perimeter, with some leeway allowed to adjust for minor irregularities. When considering using concrete deck blocks instead of footings, you should consider the following factors.įirst, the area should be flat and free of obstacles. This can be more economical and practical, but there are certain limitations. In certain circumstances, concrete deck blocks can be used in lieu of footings. Can I use concrete deck blocks instead of footings? Finally, it is important to check the deck blocks periodically for any signs of settling or need for additional stabilizing. This will ensure the deck is structurally sound and can support the weight. This is necessary to prevent moisture from coming up through the ground to the deck joists and could cause the lumber to rot or other damage to the deck.Īdditionally, it is important to make sure the deck blocks are level and even. Yes, under each deck block you should place a 4-6 inch (10-15 cm) layer of gravel, rock chips or other drainage material. Do you need to put anything under deck blocks? It is important to ensure that the footing is secured firmly and level, and that additional blocks or supports are used as needed to prevent sinking or shifting. When placed on level ground and properly supported, these blocks can provide a reliable base for your outdoor structure. They can be stacked on top of each other and secured in place with galvanized steel fasteners for additional support. They are typically circular in shape, and have indentations to allow for posts and beams to be attached. ![]() These precast concrete blocks are designed to provide a stable foundation for decks and other outdoor structures. Once the ground is prepared, you can begin laying down your decking. Add a thin layer of sand to ensure the ground is flat and to help with drainage.Ĩ. Backfill the area with soil until the blocks are completely covered and the ground is level.ħ. Make sure to level the blocks by using a spirit level or similar tool.Ħ. Place the deck blocks into the hole and press down firmly until they have been secured in the base.ĥ. Place gravel or ground stone into the hole to form a compacted base for the deck blocks.Ĥ. Dig a hole that is approximately 40 cm deep and 40 cm wide.ģ. Use a garden hose or a spirit level to mark the ground surface in the desired design area.Ģ. To properly prepare the ground for deck blocks, it is important to follow these simple steps:ġ. ![]() How do you prepare ground for deck blocks? Installing a layer of gravel also makes it easier to level the structure, adding extra stability and preventing settling in the future. Gravel also keeps soil in place and can provide a buffer between your deck and any hydrostatic pressures that may be created from the surrounding soil. When a layer of gravel is added beneath the deck substructure, it prevents water from pooling and causing erosion or freeze-thaw issues during the winter. It provides a stable and durable foundation, helping to ensure the longevity of the deck while also reducing the risk of settling and movement. Does a freestanding deck need footings?.How do you support a deck without posts?. ![]() Can you build a deck without putting posts in the ground?.Should I put crushed stone under my deck?.Can I use concrete deck blocks instead of footings?.Do you need to put anything under deck blocks?.How do you prepare ground for deck blocks?. ![]()
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