+ Reply to Thread
Results 1 to 4 of 4
  1. #1
    Join Date
    Jun 2007
    Location
    Iowa
    Posts
    2

    Default Which cement for damp basement walls?

    I'm trying to dry out the basement in my 1929 1 1/2 story frame home built on a slab and cinder blocks. The worst seepage is in the lower foot of the walls, particularly where the slab meets the block. After cleaning and etching with Muriatic acid, which cement will seal this lowest foot up the best - hydraulic cement, portland cement, or sand/cement mix?

  2. #2
    Join Date
    Jun 2007
    Location
    NorthWest Florida
    Posts
    61

    Default Re: Which cement for damp basement walls?

    You'd most likely want to use hydraulic cement, as it expands a bit as it cures, and can be troweled on some pretty wet walls. Note, however, to get the best patch, you really need to open up any cracks a good bit (several inches if possible) to get as much cement in there as possible. It may not be possible to chip out enough of the slab though, and in that case, you might be better off with a different mix that can cure in wet conditions, but doesn't expand.

    After patching, be sure to follow with a sealing paint/primer made specifically to seal wet concrete walls that expands into the cement to seal it off well.
    Tom Stangl
    Hidden Content
    Prius Visual FAQ Home
    Hidden Content
    DSM Visual FAQ home

    Caveat: IANAC (I Am Not A Contractor) - I am simply a DIYer that tends to do a lot of research. Contact licensed Contractors/Architects/whatever for the final legal word on any advice.

  3. #3
    Join Date
    Jun 2007
    Location
    Tulsa
    Posts
    3

    Default Re: Which cement for damp basement walls?

    I have had a similar problem, and from everything I have read it seems like Thoroseal is the way to go. I don't know if they have it at the big boxes, but I have seen it at Ace.

  4. #4
    Join Date
    Feb 2008
    Location
    Central Kentucky
    Posts
    3

    Default Re: Which cement for damp basement walls?

    Using hydraulic cement is your best bet. I have used this product on water foutains under water to stop the leak from going through the base, it sets very quickly so I suggest you only use a small amount at a time. Good luck
    Last edited by Eagletatt; 02-26-2008 at 09:51 PM. Reason: mis-spelled word
    Practice Good Karma

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •