My floor slopes down by about 1 1/2 inches. How do I level it?

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Ive pulled the carpet and will have to replace the subfloor. But the drop off is where the previous owners added onto the house, (its about 50 yrs old). Maybe I can create a step up or down.

  4 answers
  • 2dogal 2dogal on Jan 10, 2018
    Since you have to replace the subfloor, you can raise it level with the rest of the house when you install the subfloor. That would be the easiest way. 1 1/2 inches in not high enough for a step.

  • Ken Ken on Jan 10, 2018
    I searched for information on how to level an old floor and there are a lot of videos out there. Thinking about which direction to steer you I realized that we don't know why your floor slopes and over what distance that 1-1/2" slope occurs. Over 20' that isn't all that much. Over 6' it may need to be addressed. From what I know of your issue it is possible that the structure needs raised or there is deteriorating structure that must be repaired before you do anything.

    If you don't know why it slopes, you should bring in a professional to determine if the structure is still sound. I would prefer to have the slope over a 1-1/2" step which will surely be a tripping hazard.

  • Arc11884859 Arc11884859 on Jan 10, 2018
    my neighbor leveled her floor with roofing shingles, they are sturdy, held up well and were cheap and easy to work with. Hope this helps.