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How to Pour a Cement Floor in an Old Cellar

Pouring a cement floor in an existing cellar is easier than pouring a new foundation because the area to be covered is already boxed in with retaining walls. Using a self-leveling concrete mix will eliminate the need for using a screed and speed up the pouring process. Once you have begun the pour, you must not stop. Pour the entire floor and make sure the cement is continually stirred so it doesn't begin to set in the bucket. Having a helper mix cement while you pour is highly advisable.

Things You'll Need

  • Thick-tined rake
  • 2-inch by 4-inch stud cut to the width of the door opening
  • Leveling concrete mix
  • 2 - 5 gal. buckets
  • Electric drill
  • Paint stirring attachment for the drill
  • Trowel
  • Concrete rake
  • Rubber gloves
  • Cement sealant
  • Paint roller with pole
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Instructions

    • 1

      Level out a dirt cellar floor with a thick-tined rake. It doesn't have to be perfect, a rough leveling will do.

    • 2

      Place the 2-inch by 3-inch stud flush with the walls in the doorway so the concrete mix doesn't flow out of the cellar.

    • 3

      Mix a batch of self-leveling cement in a 5 gal. bucket using the electric drill and paint stirring attachment.

    • 4

      Pour the bucket of cement in the far corner of the cellar. While you are pouring, have your helper mix another batch of concrete.

    • 5

      Pour the second batch of concrete in the other corner opposite the cellar door. Continue this pour process until the entire floor is covered. If there are areas the concrete isn't reaching, use a trowel or cement rake to spread it.

    • 6

      Wait 48 hours after the last bucket of cement has been poured before adding a layer of sealant. During this time, the self-leveling concrete will settle and form a level surface and cure so that it is strong enough to walk on. If your cellar is damp, you may want to extend the cure period to 72 hours.

    • 7

      Apply concrete sealant with a paint roller on a long pole. This make it easier to spread and keeps you off your hands and knees. Let the sealant dry for 48 hours before moving anything onto the floor.