project1830

Hi, We have a wonderful old home 1830 built. The floor in the back side does a drastic slope of about 3 inches going to the outside wall. The house sills etc appear to be ok...so with that we want to raise the floor to the back of the house to match a grade we have determined. Any suggestions on how to do this would be greatly appeciated. We have thought of starting with a 2 x 4 on the far end and then dropping the height of the supports until we get to the existing grade, with laying our plywood on top. The final end will be at 1/2" to meet exisitng floor. any thoughts would be greatly appreciated

nealtw

If next year you want to work on siding or something, you won't be happy with the person that fixed the floor instead of the house.
But yes your plan will work. Your strips should sit above each floor joist. If the floor joist run with the slope you will need to rip tapered spacers

samfloor

This really should be posted in "Framing and Foundation".

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joecaption

It would be far better to fgure out where and why the house moved and fix that instead. Mark my words doing it by shimming will throw off everything else in the room, from floor to ceiling height, baseboads, window height from floor to stool
90% of our work is on older houses and we have tryed doing the shimming thing and it looked really bad.

CharlieO

Whether you jst level the floor or fix the foundation, will be based on if the house has settled or was built that way. It may have been an outside porch originally that was closed in and made into an interior room.

As Neal stated it depend on which way your joist are running. You want to keep you shims on top of existing joists

If they run with the slope, rip 2" x's from 0" to whatever amount you want to take the slope out at the other end.
If the joist run the other way, just keep ripping them smaller until you get to 0"