can I pour concrete against a framed exterior wall?

Discussion in 'Bricks, Masonry and Concrete' started by Jeri B, Jul 19, 2008.

  1. Jul 19, 2008 #1

    Jeri B

    Jeri B

    Jeri B

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    We want to add a patio by our back dooe but one of the homes exterior walls is 18" lower than the adjacent wall (due to a sunken room in the house). A concrete contractor told us he can remove some siding, apply a concrete board and rubber membrane and pour concrete against it. Is this a good practice? We live in Minnesota with freeze/thaw conditions so the slab can move.

    Any help/ideas would be greatly appreciated.

    Thank you,
    Jeri B
     
  2. Jul 19, 2008 #2

    glennjanie

    glennjanie

    glennjanie

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    Welcome Jeri B:
    Yes, that sounds like a good plan. The only thing I would want to add is butyl rubber caulking in the crack between the house and concrete to keep water out of there and remain flexible during temperature movements.
    Glenn
     
  3. Jul 19, 2008 #3

    mudmixer

    mudmixer

    mudmixer

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    I would not do it and you will probably find a lot of good contractors that would not touch it with a 10' pole. Cement board and a "waterproof" sealer and membrane, especially when it comes to the frost movement you can get in your area.

    You apparently are not under a code, but if you ever go to sell, any reasonably imtellegent home inspector should spot that. Just because a code is not contolling now, that has nothing doing when you go to sell.

    How does a wood frame wall enter into a patio installation? Is the patio above aliving area?
     
  4. Jul 22, 2008 #4

    handyguys

    handyguys

    handyguys

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    I too would be reluctant. Is there any way to change grade and just do steps? If you DID do it I would also make sure you had a slope away from the house. No, I wouldn't do it.
     

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