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#1
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pipe penetration below water line
How do you seal a cast iron pipe coming through concrete when the pipe
penetration is below the waterline??? I am going to pour concrete around the shower drain pipe in the concrete slab and create a drywell. However, the rusty cast iron pipe will go through the concrete slab below the water line (during the rainy season). I need to seal the seam between the cast iron pipe and concrete so no water will infiltrate into the drywell I am creating. I have no basement; this is on the ground floor of my home. Any and all valuable advice is welcome and would be greatly appreciated! |
#2
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On 9/1/2005 8:31 AM US(ET), fberna took fingers to keys, and typed the
following: How do you seal a cast iron pipe coming through concrete when the pipe penetration is below the waterline??? I am going to pour concrete around the shower drain pipe in the concrete slab and create a drywell. However, the rusty cast iron pipe will go through the concrete slab below the water line (during the rainy season). I need to seal the seam between the cast iron pipe and concrete so no water will infiltrate into the drywell I am creating. I have no basement; this is on the ground floor of my home. Any and all valuable advice is welcome and would be greatly appreciated! With a hydraulic cement, like UGL's DryLok. http://www.ugl.com/DRYLOKframes02.html -- Bill |
#3
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Or DAM-IT. They make slow and fast setting. I would go with the slow
because it is still very fast. But it will not last forever and neither will that pipe. "willshak" wrote in message ... On 9/1/2005 8:31 AM US(ET), fberna took fingers to keys, and typed the following: How do you seal a cast iron pipe coming through concrete when the pipe penetration is below the waterline??? I am going to pour concrete around the shower drain pipe in the concrete slab and create a drywell. However, the rusty cast iron pipe will go through the concrete slab below the water line (during the rainy season). I need to seal the seam between the cast iron pipe and concrete so no water will infiltrate into the drywell I am creating. I have no basement; this is on the ground floor of my home. Any and all valuable advice is welcome and would be greatly appreciated! With a hydraulic cement, like UGL's DryLok. http://www.ugl.com/DRYLOKframes02.html -- Bill |
#4
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I'm a little confused. If the line exits the concrete below the
water table, how can anything about it possibly function as a dry well? Gray water plumbing is illegal in many/most jurisdictions. To seal a pipe penetration in a concrete wall: drill an appropriate sized hole to allow about a 1/2" annular space. Insert backer rod to proper depth around the pipe, caulk with one or 2 part polyurethane, repair wall waterproofing membrane as required. None of the expanding foams are waterproof to my knowledge. Cementitious grout packs do not allow for any differential movement between dissimilar materials (cast iron and concrete or pvc and concrete) (top posted for your convenience) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Keep the whole world singing . . . . DanG (remove the sevens) "fberna" wrote in message oups.com... How do you seal a cast iron pipe coming through concrete when the pipe penetration is below the waterline??? I am going to pour concrete around the shower drain pipe in the concrete slab and create a drywell. However, the rusty cast iron pipe will go through the concrete slab below the water line (during the rainy season). I need to seal the seam between the cast iron pipe and concrete so no water will infiltrate into the drywell I am creating. I have no basement; this is on the ground floor of my home. Any and all valuable advice is welcome and would be greatly appreciated! |
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