Basement Water Coming From Your Gutters

If you have water in the basement, the instinct is to look at the basement. It is worth spending twenty minutes outside first, during the next real rain, because the cheapest possible cause is happening above your head.

The volume nobody pictures

A roof is a large flat collection surface. Every inch of rain that falls on it has to go somewhere, and a single storm moves a serious quantity of water off it.

The gutter system exists to catch that volume and put it down somewhere away from the house. When it fails, the same volume gets delivered into the soil hard against your foundation wall, repeatedly, storm after storm.

Soil that is repeatedly saturated at the wall is how water finds its way through a joint, a crack, or a window well.

The four ways roof water ends up at your foundation

Overflowing gutters. Water coming over the front lip lands in a line along the drip edge, which is usually within a foot or two of the wall. The causes of an overflow are debris, capacity, or pitch.

Downspouts discharging at the wall. This is the most common and the easiest to fix. A downspout that dumps straight onto the ground beside the foundation is concentrating the entire roof plane’s water into one spot, right where you least want it.

A blocked buried drain line. If your downspout feeds a pipe underground and that pipe is blocked, water backs up and surfaces exactly at the foundation. That is its own problem, and it is drainage contractor work rather than ours.

Water running behind the gutter. Instead of going into the trough, water tracks down the fascia and the wall. Less volume than an overflow, but delivered directly against the structure.

The twenty minute diagnostic

Do this during an actual rain, not on a dry day:

1. Walk the perimeter. Where is water landing? Look for splashing at the wall, and for eroded channels or bare patches in mulch and soil right against the foundation.
2. Find every downspout and follow it. Where does it actually discharge? Right at the wall, or genuinely away from the house?
3. Look up. Is any trough coming over the front? Where exactly?
4. Note which side of the house. Then check whether that matches where the basement is wet inside. If the wet corner inside lines up with a downspout dumping at the wall outside, you have your answer.

That last step is the one that turns a guess into a diagnosis.

The cheap fixes, in order of cost

Extend the downspouts. Getting discharge properly away from the wall is the highest value, lowest cost thing on this list. It is often a same day change.

Clear the gutters and downspouts. If overflow is the cause, this is straightforward.

Fix pitch or add a downspout. If a clean gutter still overflows, this is a repair rather than a cleaning.

Check the grading. Soil should fall away from the house. Over years it settles and can end up sloping back toward the wall, which puts every drop of roof water where it does the most harm. Regrading is landscaping work rather than ours, but it is worth knowing about.

Why this matters locally

Much of the metro drains into the Papillion Creek watershed, though the part that affects you is the first few feet. Once water is more than a few feet out and moving away, it is the watershed’s problem. Within those few feet it is your foundation’s problem.

Omaha also gets its rain in short heavy bursts rather than long soaks. A drainage setup that copes with ordinary rain can be overwhelmed three or four times a year, and those are precisely the events that put water in a basement.

Being honest about the limits

We are gutter people. We can make sure your roof water is being caught and delivered away from the house properly, and if that was the cause you have solved a basement problem for the price of gutter work.

If your basement still takes water once the roof drainage is right, the cause is elsewhere: grading, foundation sealing, or groundwater pressure. That is a waterproofing or foundation contractor and we will tell you so rather than sell you more gutter work.

Estimates are free, with a $250 minimum on any job.