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jnybegug

11:23AM | 06/20/05
Member Since: 06/19/05
1 lifetime posts
Bvbasement
Our basment has flooded numerous times in the 10 years we've lived here. A contractor recommended an interior French drain. Another suggested digging up around the outside of the house, to the water table, and extending drainage out from there. Which is better, which will "guarantee" a dry basement?

tomh

11:35AM | 06/20/05
Member Since: 07/01/03
549 lifetime posts
Without a doubt the best approach is to excavate the exterior and install drainage at the footer, waterproofing the exterior basement wall, and backfilling with drain gravel. This prevents water from ever entering the walls and directs water to an exterior drain or sump. Interior solutions may be less expensive, but they only capture water AFTER it has penetrated the walls. Water runs through the block or even penetrates to the interior, then the interior drain intercepts the water keeping it from running across the floors and flooding.

You want guarantee, do the exterior. Water flows through the drain rock rather than the walls. This also can also reduce pressure on the walls from soil expansion and contraction, and is the best way to keep dry floors and walls.

cellarwater

02:57PM | 07/03/05
Member Since: 12/09/03
175 lifetime posts
I like the outside method. It will relieve the water table pressure against the foundation better. If you've got land lower than the basementr floor outdoors run the drain to the low point. Otherwise pipe to a sump pump inside. C.

acadiaphile

09:18AM | 07/06/05
Member Since: 06/26/05
3 lifetime posts
I have a similar situation but was told that the exterior approach shouldn't be used in a house with a stone foundation and gravel footer because the foundation itself could be damaged. Moreover, what sort of person would be hired to do exterior work such as this? So far everybody I've asked for an estimate recommends an internal French Drain (or its variants).

TIA!

cellarwater

08:53PM | 07/08/05
Member Since: 12/09/03
175 lifetime posts
A lot of guys like the interior method. I'ts easier. On the feildstone use the inside method, Concrete walls act as a dam, outside drains give the water a place to go. C.

cellarwater

09:02PM | 07/08/05
Member Since: 12/09/03
175 lifetime posts
K2 I come and go sometimes I get real busy with threads and other times not so busy. Good to answer a thread once in a while though.... Thanks for the hello! C.
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