Flooding from exterior basement stairwell

auzzyAugust 14, 2007

Our 1967 house has an exterior stairwell leading to the below ground basement door. At the bottom of the stairs is a small concrete slab with a dry well. When it rains really hard, water comes up through the dry well, as well as through the weep holes in the retaining wall, and then goes under the basement door, flooding the basement. We have had the dry well snaked, but was told it basically doesn't work anymore. We were advised to get an exterior sump pump. One company said it was against code to install an exterior sump pump (and wouldn't talk to me because my husband wasn't home!). Another suggested putting a drain in the exteior stair well, put the sump pump inside the basement, in the corner closest to the door, dig a trench along that wall for the water to get to the pump, and run a pipe up the wall behind the paneling and shoot the water out through an underground pipe into the yard. They only install systems with a backup battery. This is about $3,000. Does this sound like the best way to solve this problem? A third company said we don't need a backup battery and they would put in an exterior sump pump for $1,000. We live in Maryland, and the second contractor said you have to worry about the pipe freezing in the winter. Appreciate any advice on how to keep the water from flowing under the door. Thanks.

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sparky-2007

Auzzy, Its kind of hard to really try and give advice without me viewing the problem but if you have a well ther already why not just put a sump pump in the well and pump the water up and out. This would be very cheap to do. If you are worried about freeze up in the winter just make sure that you can easily unhook the pipe where it connects to the pump so you can attach a flexible type sump hose if the need arises. Any contractor will try and charge you mega bucks for which seems to be an easy fix.

    Bookmark   August 17, 2007 at 1:19PM
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brickeyee

Putting a pump and pit in the heated basement and using a 2 inch pipe top connect to the outside pit works very well in freezing areas.
Put the 2 inch inlet pipe just under the concrete.
If the dry well can absorb small amounts nothing comes in, but if the out side pit fills up the overflow goes into the inside and is pumped out.
If you are not in an area that ever freezes, you can put the pump outside.
There are other options besides battery backup like a water driven pump if you are on municipal water.

    Bookmark   August 19, 2007 at 11:51AM
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