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how to patch holes in cinder block wall ?

Discussion in 'The Lounge' started by R72K5, Feb 24, 2004.

  1. R72K5

    R72K5 Banned

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    how do you successfully and neatly patch holes punchjed through normal common modern "cinder" block foundation walls ? holes anywhere from size of wiring cable diameter, up to around 3 or 4" diameter ? would anything liek chicken wire screen help maybe somehow ? what kind of cement or mortar mix would i want to use that would adhere well ? fast set or normal set ?

    the wall in question has a thin layer of what i assume is mortar and is textured with what looks like broom bristles, and is exterior side of the wall facing the elements of below freezing temps and up hair over 100 in summer and tons of humidity 90% of the year commonly always in 85-100% range

    thanks
     
  2. jjlaughner

    jjlaughner 3/4 ton status

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    They make a ready to use (small jobs) and mix yourself (big jobs, alot cheaper) mortor mix just for that purpose /forums/images/graemlins/thumb.gif
     
  3. mofugly13

    mofugly13 1 ton bucket of rust Premium Member

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    You need some portland cement and some kiln dried sand. You are gonna mix up some stuff called "drypack". Figure out about how much you're gonna need. I'd probably mix up a gallon of each. Now you're gonna add water, but VERY little water. You want just enough water to wet every bit of your mix and NO more. It should be the consistency of damp sand. Ball some up in your hands and then hold the ball in one hand. Does it sag or slump at ALL under it's own weight? If so, it's too wet. Does it crumble apart or crack? Then it's too dry. Once you have it the right consistency, go and pack the holes full of it. Get it as deep into the holes as you can and fill them up. Have a tool of some sort to pack it down as you add mix. A broomstick cut flat at one end would work good for smaller holes, I've used the end of a 2x4 when packing larger holes, 6"-8" diameter. On larger holes, you'll need to secure a board over them on one side so you can pack them from the other. Stuff that mix in until it's flush with the surface of the wall and finish it off smooth by rubbing your hand over it. As far as the thin topcoat and the texture, that is something specific for topcoating block walls, Home Depot has that stuff.
     
  4. R72K5

    R72K5 Banned

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    nice, thanks /forums/images/graemlins/laugh.gif
     
  5. mofugly13

    mofugly13 1 ton bucket of rust Premium Member

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    /forums/images/graemlins/thumb.gif
     

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