Seal pipe penetration below grade
Last Post 13 Mar 2010 08:00 PM by oceanminded. 15 Replies.
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Boontucky-girlUser is Offline
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03 Apr 2009 12:49 PM
We are connecting our new house plumbing to an existing septic tank.  Because of certain conditions we didn't know for sure the location of the exit pipe through our basement and were not able to put a sleeve through the basement wall before it was poured.

This spring we are going to dig up the trench to run our septic line to the new house, we are going to  core drill a hole through the basement wall to hook up our waste line to the septic line.

My questions are:

Should we drill the hole larger to fit a sleeve then run the sewer line inside the sleeve?
What should we use for a sleeve?
How do you seal between sleeve and concrete and between sleeve and pipe?
If we can run pipe directly through concrete hole, how do you seal between pipe and concrete?
We read somewhere to use foam, but can't water get that foam soaked and eventually into the basement?
If caulk, what should we use? We already noticed that the silicone caulk we used last fall to seal the dimple board to the foam has already failed, so we don't trust caulk below grade. Should we use Vulkum? Concrete sealer? Some sort of grout? Epoxy sealant?

We have ICF basement with dimple membrane on the exterior.

Thanks for the help.
jimmy48User is Offline
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03 Apr 2009 04:30 PM
use hydraulic cement to seal the hole
Boontucky-girlUser is Offline
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06 Apr 2009 12:19 PM
Thanks for the reply.

While I waited for a reply, I googled this question and came across this article from the book Building tips and techniques from fine homebuilding:

http://books.google.com/books?id=adupJ99htGUC&pg=PA54&lpg=PA54&dq=seal+a+drain+penetration+in+a+foundation+wall&source=bl&ots=NjuS6siQgh&sig=6FyiXvjwfLvQzjmrlFQrqrzAI5Q&hl=en&ei=0TjaSav7D4iSMuCJ4OEO&sa=X&oi=book_result&ct=result&resnum=7

Has anyone ever used this method?

Thanks,

BG
Bruce FreyUser is Offline
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07 Apr 2009 05:33 AM

We have used polyurethane foam in similar applications with good success with concrete walls (not ICF).  Make sure your surfaces are clean before you apply the foam.

Bruce

ManfredUser is Offline
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07 Apr 2009 10:39 AM
my suggestion would be to run the pipe directly through the wall. No sleeve needed. A sleeve is usually used to put a penetration in place before you pour the concrete. In your case you have to core drill or hammer out the hole. I would not make it any bigger than necessary. Then I would place the pipe and seal with polyurethane like suggested above. Make sure the surface is not just clean but also dry. Otherwise poly will not connect, stick and cure properly.
Manfred Knobel
Moss Pointe Builders, Inc.
thagreenUser is Offline
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07 Apr 2009 12:18 PM
Have encountered this scenario before. Filled the gap w/polyuretane foam and sealed the deal w/peel and stick for insurance.
Been a couple years since and seems it's doing what it's supposed to.
Cheers!
Bruce FreyUser is Offline
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07 Apr 2009 12:50 PM
....while I'm thinking about it, make sure the annular space around your pipe is 1/2" to 3/4" (i.e., the core hole should be at least 1" diameter larger than the OD of the pipe) to the foam to adhere and the pipe some ability to move.

Bruce
Boontucky-girlUser is Offline
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07 Apr 2009 03:07 PM
Thanks for all the responses. Is it true that the IRC and the UPC require sleeves on pipes through walls? I read somewhere that it is code requirement to run pipes through sleeves. Thanks.
ManfredUser is Offline
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08 Apr 2009 03:07 PM
that depends on your location! Usually sleeves are only installed in commercial type construction. To my knowledge installing sleeves for drainage pipes in home construction is not required. To forego any misunderstanding: there is one sleeve requirement for home construction and that is to provide for the main electrical line. In my state this is 3" to make room for 200Amp as well as 400Amp service.
Manfred Knobel
Moss Pointe Builders, Inc.
colinmccUser is Offline
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15 Apr 2009 06:55 PM
Since moving from the UK to Canada I've been amazed at the lack of things like this in the N American market.. Since pretty well when plastics became part of plumbing systems, British manufacturers have offered 'through wall' sleeves to match their pipes. (Osma was the maker of our preferred supplier I believe).

The one we used in our ICF buildings were coated on the outside with a sand like texture to 'grip' the concrete and had a single O ring centered in the sleeve which provided a watertight seal on the soil pipe.

If I recall correctly they were also slightly tapered from the outside to the center where the o ring is located, so that the sleeve lying horizontally through the wall would accommodate a fall in the pipe that ran through it.

It seem that  it should be a standard component, offered by all plastic pipe manufacturers to match their pipes , but as far as I know no one in N America/Canada offers them.

I'd love to be proved wrong, so if you know of a manufacturer here please let us know.

Boontucky-girlUser is Offline
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16 Apr 2009 11:08 AM
Collin, that sounds like a perfect solution. I'm not aware of anything like that being sold here in the US, but for the most part I seem to think that the US is way behind Europe in lots of technology for building.

My gripe is that my grandfather who lives out in the jungle in a country in central america has high speed cable internet, while me, who lives in the great USA can't even get anything better than 25K dial-up (unless I went with satellite, and my neighbors who have it complain it doesn't work for the money they spent) and we live 15 miles from a city with a population of 25K! Go figure.
BruceUser is Offline
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16 Apr 2009 02:50 PM
Boontucky-girlUser is Offline
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01 May 2009 09:09 AM
Thanks tb. I'll look into it.

Mandfred - I read in the code that you do need sleeves through foundation walls. The only exception is if the hole is core drilled.

Thagreen - what do you use for peel n' stick?
thagreenUser is Offline
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01 May 2009 10:04 AM
Soprema icf colphene, winter or summer grade, but there are others such as blueskin etc.
We use it for waterproofing insurance for below grade therefor we have some left out of the 225' rolls.
Mabe a contractor in your area does the same and he could sell it in feet, end of the roll type of thing.
Cheers!tgif!
dmaceldUser is Offline
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08 May 2009 02:04 PM
Posted By Boontucky-girl on 05/01/2009 9:09 AM

Mandfred - I read in the code that you do need sleeves through foundation walls. The only exception is if the hole is core drilled.


That's what I find also. UPC provides a specific exception. 2006 IRC says sleeve or relief arch.

Even a retired engineer can build a house successfully w/ GBT help!
oceanmindedUser is Offline
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13 Mar 2010 08:00 PM
Try this solution for watertight seal around any size pipe in concrete core or sleeve in any weather or surface condition.

http://www.metraflex.com/std_service.php

Follow handy installation video link
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