Ask Experts Questions for FREE Help !
Ask
    harry1961's Avatar
    harry1961 Posts: 2, Reputation: 1
    New Member
    		  
    #1

    Nov 26, 2009, 07:53 PM
    How to plug a hole in cement wall
    2 pipes are com'n through my cement basement wall and now water is coming through . I tried hydraulic cement from the out side didn't work . Is there anything I could do from the inside to seal it off thanks
    Perito's Avatar
    Perito Posts: 3,139, Reputation: 150
    Ultra Member
    		  
    #2

    Nov 26, 2009, 08:33 PM

    Silicone caulk?
    speedball1's Avatar
    speedball1 Posts: 29,301, Reputation: 1939
    Eternal Plumber
    		  
    #3

    Nov 27, 2009, 08:45 AM

    Please explain the problem in detail. Are the pipes in the basement? How far under ground are they? Where is this water coming from?
    Let me know, Tom
    harry1961's Avatar
    harry1961 Posts: 2, Reputation: 1
    New Member
    		  
    #4

    Nov 27, 2009, 05:28 PM
    Quote Originally Posted by speedball1 View Post
    Please explain the problem in detail. Are the pipes in the basement? How far under ground are they? Where is this water coming from?
    Let me know, Tom
    The pipes are in basement about 4'underground outside. Water is coming from rain snow melt that soaks down to the hole the pipes are for my Geothermal heating/cooling system it wasn't sealed properly when installed . I tried Hydraulic cement inside and outside didn't work . Thanks for taking time with this
    KISS's Avatar
    KISS Posts: 12,510, Reputation: 839
    Uber Member
    		  
    #5

    Nov 27, 2009, 06:42 PM

    Actually, I would try to seal on the outside and the inside. What's puzzleing is that a small leak usually just heads for the french drain.

    Since you said rain and snow melt, the first thing is grading and length of the downspouts.

    With that taken care of, I'd clean the areas needing to be sealed. Without a clean source, your going to be hard pressed to get a leak tight seal.

    Sleaving would be the BEST thing to do. This is where you would put in a piece of PVC so that the pipe can pass through it and it would allow for expansions in all directions. You may have pipe expansions that need to be taken care of as well as foundation movement. The only way is to isolate these changes and to make sure the changes are not destructive.

    Suppose you did it the right way. Sleave the penetration and make sure the pipes can give. Using gravel and elbows with enough lateral length can allow for some expansion in the pipes. If the pipes are TOO tight in the holes that can cause issues too.

    I'd use Rockite to fix any major imperfections in the cement.

    You want a flexible joint with a material that can be used underground, therefore I'd recommend a polyurethane caulk. An example of a date sheet would be here:

    http://www.homasote.com/Installation...ticNP1_tdg.pdf

    If you can't find a similar product at a hardware store then try a marine store.
Not your question? Ask your question View similar questions
 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

How to support a load bearing wall, need engineer, cement wall [ 3 Answers ]

I want to remove about 6 feet from an interior wall. The rafters run parallel with the wall but the reason I think it's load-bearing is because one of the trusses rests on the middle of the wall with a lateral x across it. I have existing pictures and a drawing of "the existing" and what is...

1/2 wall to cement floor [ 3 Answers ]

I am putting a 1/2 wall in my family room. The slab is 34 years old (very very hard cement). Someone told me to use gorilla glue. Not sure about how well that would work. Looking for some more ideas. Also, this half wall is going up 3 foot and out 6 foot. (not to ceiling or other side of room) How...

Hole in wall [ 7 Answers ]

My towel rack in the bathroom got pulled out of the wall (one side - the other side is still secure in the wall) which created a hole in the sheetrock. How do I patch the hole good enough to be able to put the towel rack back?

Hole in basement cement, but no pipe for draining Tub. [ 5 Answers ]

Howdy all, Here’s my problem: I have an 8” x 8” hole in the basement that was not cemented with the rest of the floor. I believed I would find a drain for the tub (because the location seems reasonable, and waste plumbing is already in place for a toilet and sink.) However, upon digging...

View more questions Search