#CONCRETE DECK BLOCKS LOWES INSTALL#
#CONCRETE DECK BLOCKS LOWES CODE#

An average 12′ x12′ can use around 18 blocks, but more is certainly ok, just space evenly. Generally speaking, you want support every 3-4′ for a normal use building and 4-6′ for lighter situations. Structures like small decks or sitting on a rock will require less. Softer soil or heavier structures will require more weight distribution. The quantity will depend on the soil conditions, weight, layout, and the size of your structure. Piers will provide a greater lateral (sideways) and overall support than blocks. The blocks can be buried but typically aren’t more than a couple of inches.Ĭoncrete footings will provide greater support due to the higher mass and surface area but will usually require more time and money. Blocks will allow minimal surface prep or digging as opposed to concrete piers which will usually require excavation of large amounts of dirt, more labor and associated costs.

#CONCRETE DECK BLOCKS LOWES INSTALL#

Deck Blocks vs Concrete Footings or Piersĭeck blocks will normally be quicker and cheaper to install than concrete footings. Especially in loose soils or wet conditions which requires more weight distribution. That’s why it’s a good idea to use more than less.ĭispersing the weight is the idea and diverting water away from the structure. The deck blocks can sink if the soil under them erodes for some reason or the weight is unevenly distributed. It would cause structural damage and separations. Obviously, you don’t want one section raising and lowering and another not. That is also a factor for underground mechanicals that raise to the structure. The blocks float on the ground and will raise and lower with the frost. The structure on blocks also can’t be fastened to a permanent structure with frost protection (foundation down to frost line). If your area has frost line restrictions which vary up 70” in northern areas, they won’t likely be allowed for permanent or residential structures. Will Deck Blocks Hold Up to Frostline Restrictions and Will They Sink?īasically they won’t be allowed. The block size will vary according to the manufacturer, but they are generally 10″-11” square and 7″-8” high. They are found at most big box home stores or check your local hardware store. They vary in price from $4 to $6 depending on location. How much are Deck Blocks and where do I get them?

They will add lateral support and inhibit uplift in stormy or high wind situations. There are other types of ground anchors like used for Mobile Homes etc. Some areas may additionally require the use of auger type tie downs that are like a metal screw that goes into the ground then fasten to structural framing members.

#CONCRETE DECK BLOCKS LOWES CODE#

It’s best to check with your local building code office to see if they’re allowed for your type of structure.

Deck blocks are rarely an option if you need to comply with frost heave regulations.

They aren’t normally allowed for residential structures for habitation.

They generally shouldn’t be used if you are in a high wind or high uplift situations.They should not be used if you are attaching to a permanent structure that has frost protection equirements.

Concrete deck blocks lowes