Waterproofing basement

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Posted by: from Pefferlaw
4/2/2016 at 11:47:14 AM

The house is over 100 years old. There is a wall in the basement with water seepage. There is no foundation on the outside of the house as its sitting on a couple feet of rounded stones and then on dirt and under the house in that section is crawl space. On the inside is the rounded stones of an inside wall.

Here's the question, obviously there needs to be some sort of waterproofing done from the inside wall but there has been a few ppl saying you can still waterproof from the outside by digging. How would you waterproof the outside without a wall to apply the products to? It sounds like a cash grab to me for extra money.

Input appreciated.

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Date/Time4/2/2016 at 1:10:57 PM

You can dig from outside and parge the stones to a smoother finish then waterproof it and make sure you install some weeping tile at the base of the wall covered in about a foot of stone hooking up to inside tile under wall and floor if no inside tile is present then install a sump pit and pump and discharge pipe and pump it to atleast thirty feet away from home.

Now you won't have any chance of mold growth.

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Date/Time4/2/2016 at 1:22:44 PM

I am not a waterproofing contractor, so please take what I say with that in mind...

I did a lot of research when I was going to waterproof two of my homes and during my research I learned that basically you should not "waterproof" or insulate a field stone or rubble stone basement wall. In your post you say there is no wall... so not sure if this is helpful.

This is one of the few instances where "water management" is the most effective approach. In my research I learned that because of the nature of field stones, if you try to waterproof and insulate they will heave and crack and eventually break away and cause a failure of the foundation.

What you are most concerned of doing is keeping the inside and outside of the stone pretty much at the same temperature. If you start adding materials to one side this is what causes the problems as the moisture will still pass to the stone... think of a stone in a fire pit... hot on the outside and cool / cold and damp on the inside.

Some sites talked about "parging" the exterior stone above grad an then using drainage tile to keep the water moving away from the stone wall. A similar approach to the interior might work also; what you want to do is manage the water so it does not erode your earth that the rubble stones are sitting on.


John Kuehnl-Cadwell

Master Electrician

Datawise Solutions Inc

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Date/Time4/2/2016 at 1:35:39 PM

I would need many more details on elevations as to where the bottom of the wall is in relation to where floor level and the water is pooling inside.

With that said, it is quite possible to install weeping tile/sump pump inside or outside.

A basement repair contractor's job is to keep the water out when the work is completed. To do this, experience, knowledge and a site visit are needed to properly determine the best options for a stone foundation.


Edmonton Waterproofing Ltd

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Eric in Pefferlaw
Date/Time4/2/2016 at 3:13:10 PM

Tom from Algoma this reply is for you. There is no wall to parge and waterproof on the outside. There is maybe a foot of flagstone that is acting as a footing for the house and behind that is 20 some odd ft of crawlspace before it reaches an inside flagston basement wall.

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Date/Time4/2/2016 at 6:36:46 PM

There is a wall in the basement with water seepage. Can you not use that wall you mentioned that has the seepage?

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Luc from Fissure 911 in Gatineau
Date/Time4/3/2016 at 10:37:04 AM

911 Fiundation would be glad to help you resolve your problem or help you out to find the right solution. Please give us a call or texte msg at 613-806-8976

Best regards

Luc Poliquin

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Date/Time4/4/2016 at 11:25:04 AM

Hi Eric,

The best advice that we can give to you is to give us a call and ask for either Konstantino or Kalvin at Tri-Star. It is much easier to chat via telephone than type a book for you. Thanks so much.

Kind Regards,

Marcella Burgess

Tri-Star Disaster Recovery and Building Restoration


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