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Old 04-30-2011, 05:39 PM
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My well water inlet pipe comes though my basement about 4 feet below the ground. Long story but I had to dig it up today and it had concrete around the pipe up to the outside insulation of the house. Was this right? It would leak when it rained hard. What should I use?
Old 04-30-2011, 05:51 PM
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A little vague on the info but I would suggest either Hydraulic cement or Bentonite at the penetration to the wall.
Old 04-30-2011, 05:54 PM
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Originally Posted by Just1more View Post
Hydraulic cement
should i pull back some of the insulation around the hole so it "sticks" to the foundation?
Old 04-30-2011, 06:59 PM
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Absolutely! Bentonite is probably your best bet as it is activated by moisture (wetter it gets, the better it works) but it needs a "backer" such as compacted fill to press against. For instance, if you just put it on a wall and get it wet, it won't do squat, because it doesn't have anything to force it into the void.
Old 04-30-2011, 07:02 PM
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thanks will get some in the am
Old 04-30-2011, 07:11 PM
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Try and form a boot around the pipe/wall. About 8" onto the pipe and 8" on the wall.
Old 05-01-2011, 07:00 AM
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Being that is in the basement, it should be flashed and sealed just as a roof penetration. You can actually use the same type of flashing collar used on roofs. The only difference is you need to purchase and install a stainless hose clamp.. Use some 1" or so masonry nails to attach the collar to the wall, use a generous amount of silicone between collar and wall, then cover the outer flange and nail heads with a waterproof type of roof cement/caulk such as that used when flashing chimneys.
Old 05-01-2011, 09:03 AM
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Originally Posted by nathanhenry86 View Post
My well water inlet pipe comes though my basement about 4 feet below the ground. Long story but I had to dig it up today and it had concrete around the pipe up to the outside insulation of the house. Was this right? It would leak when it rained hard. What should I use?
Sealing the foundation is important but since it's 4' down and only leaks when it rains hard you have a runoff issue. You defiantly need to seal that penetration but dealing with the water so it doesn't reach the foundation is always your best move.
Old 05-01-2011, 02:27 PM
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Originally Posted by gort View Post
Sealing the foundation is important but since it's 4' down and only leaks when it rains hard you have a runoff issue. You defiantly need to seal that penetration but dealing with the water so it doesn't reach the foundation is always your best move.
how so like grade my yard differently? better gutter system?
Old 05-01-2011, 04:09 PM
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foundation drain [footer drain] is plugged--
Old 05-01-2011, 04:32 PM
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Originally Posted by Dead Horse View Post
foundation drain [footer drain] is plugged--
wouldn't i have other leaks if this were true?
Old 05-01-2011, 05:05 PM
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Ive had good luck with great stuff foam followed by hydraulic cement on pipe penetrations.

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