Standard Floor Thisckness Off Grade House

A subfloor is a wooden structural substrate to which durable finished flooring is attached.

Standard floor thisckness off grade house.

If you install flooring below grade you re going to run into issues of uneven floors cracks and moisture. Standard concrete floor slab thickness in residential construction is 4 inches. For example if you happen to move into an old house where the basement floor was an afterthought they may have poured the concrete too thin. There are many types sizes and configurations of plywood.

To prepare the base cut the ground level to the proper depth to allow for the slab thickness. Joists in home construction are usually made with 2 by 10 or 2 by 12 lumber. The bulk of the floor s thickness comes from the joists which are the horizontal beams that carry the floor s weight. Floor joists or beams provide the below surface support for the wood subfloor of a room.

Five to six inches is recommended if the concrete will receive occasional heavy loads such as motor homes or garbage trucks. Though joists may be any size that you desire using typical floor joist and beam specifications ensures that you can find hardware to fit the joists and that the floor provides adequate support for furniture and other items in a room. Floor joists are made from 2 by 8 inch or 2 by 10 inch lumber or from engineered quiet beams which are made from a thin layer of chipboard on edge between two lumber caps forming an i shape.