1. Ensure the subfloor is level
This is one of the most important steps as it ensures the floor will be installed on a level surface. If it is not, boards will creak and bow, gaps can open up between the boards and boards can potentially crack.
2.Use a moisture barrier
Using a moisture barrier is also very important. Subfloor must always be dry. This helps protect the boards from any additional moisture in the subfloor which could transfer into the boards. It may also protect the board from other external sources such as water leaks which can get under the floor and cause excessive damage.
3. Use the correct underlay
An underlay is necessary for multiple reasons. Floating floors will expand and contract, moving ever so slightly as a whole unit. The smooth surface of the underlay allows the flooring on top of it to float and move slightly during seasonal relative humidity changes. An underlay gives it stability, support, and certified acoustic underlays are helpful for noise reduction.