Installing a floor in your basement may require leveling the cement floor, if uneven. Do not atempt to level out the grading of the floor as 1/2″ distributed over 4 linear foot is typically required for drainage of condensed moisture.

To successfully install a basement floor you must fill any crack, holes, expansion joints with cement-based patching compound and level the floor, if uneven, by using self leveling cement.

Steps to Leveling a Cement Floor

  • remove any loose material using a chisel and a putty knife
  • clean concrete of any dust, oils, dirt and paint residue
  • apply a layer of concrete primer using a paint roller
  • allow concrete to completely dry
  • mix the floor leveler with water per manufacturer’s instructions
  • pour the leveler and spread it quickly using a rake
  • use a trowel to make sure the leveler is flush with the uncovered surface
  • let the leveler dry per manufacturer’s instructions

Tools and Materials Required

Steps to Patching Concrete Floors

  • remove any loose or flaky concrete using a masonery chisel and a hammer
  • vaccum the floor
  • apply floor-patching compound
  • use a trowel to make smooth transitions to surrounding areas
  • scrap the area smooth once the patching compound has cured

Tools and Materials Required

Now your basement floor is ready for the next steps involved in installing a basement subfloor and a floor covering of your choice.

As an additional steps before proceeding, you may want to:

  1. verify the level of moisture
  2. verify the level of radioactive radon gas in your basement

How to Verify the Level of Moisture in Basements

  • by taping a 1 square foot of clear plastic on the floor for 24 hours
  • if there is moisture on the plastic do not install the floor until you fix the moisture problem

Here is More Information About Radon

Ignorance is not bliss – is radon slowly killing you?
Awareness Video Clips
Detecting Radon
Mitigation Methods

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