The short answer
Check the Slope Around Your Home
The ground around your foundation should slope away from the house, at least 6 inches over the first 10 feet. If the soil settles or was graded flat during construction, rainwater has nowhere to go but down against the wall. Over time, that pooled water seeps into cracks and can weaken the foundation.
Walk the perimeter after a rain and look for low spots where puddles form. You can add soil to raise those areas, but keep the grade at least a few inches below the siding to avoid trapping moisture against wood. If the slope is steep or the soil is heavy clay, you may need a more involved fix.
- Measure the slope with a level and a straight board
- Look for puddles that stay for more than a day
- Add topsoil to low spots, but keep it below siding
- Use a rake or shovel to redistribute loose soil
- Consider a French drain if grading alone does not work
Inspect Gutters and Downspouts
Clogged gutters or downspouts can dump a surprising amount of water right next to the foundation. When leaves and debris block the flow, water spills over the edge and saturates the soil at the base. Even a short downspout can concentrate water in one spot.
Clean your gutters at least twice a year, especially in fall. Extend downspouts so they discharge at least 5 to 10 feet away from the house. You can buy flexible extensions or bury a pipe to carry water farther from the foundation.
- Remove leaves and twigs from gutters and downspouts
- Attach a downspout extension to direct water away
- Check that downspout connections are tight
- Make sure the ground where water exits is sloped away
- Install gutter guards if trees drop a lot of debris
Look at Soil Type and Compaction
Some soils absorb water quickly, while others, like clay, hold it on the surface. If your yard has dense clay or was compacted by heavy equipment, water will pool instead of soaking in. This is more of a problem in wet seasons when the ground is already saturated.
You can improve drainage by adding organic matter to the soil or installing a shallow trench with gravel. A simple rain garden planted a few feet from the foundation can also catch runoff and let it soak in slowly. Avoid planting large trees too close, because roots can shift the soil and change drainage.
Consider Foundation Waterproofing
If water keeps pooling despite good grading and gutters, the foundation itself may need attention. Cracks in the concrete or a missing waterproof coating can let moisture through. A professional can inspect the foundation and apply a waterproof membrane or repair cracks from the outside.
This kind of work usually involves digging down to the footing, so it is not a quick DIY project. It is often worth doing if you have a basement or crawlspace that stays damp. The cost depends on the size of your foundation, the material used, and how deep the excavation needs to go.
- Seal visible cracks with a masonry caulk
- Paint on a waterproofing coating for above-grade walls
- Install a sump pump if water collects in a crawlspace
- Add a drainage board to direct water down to a pipe
- Call a foundation pro if you see bowing or large cracks
When to Call a Professional
You can handle simple grading and gutter fixes yourself, but some situations need a pro. If you see water entering the basement, large cracks in the foundation, or a floor that is heaving, get help soon. A water damage inspection can identify the source and the right way to stop it.
The pros can also handle emergency water extraction if water has already flooded a crawlspace. In wet climates, you should fix drainage issues before the rainy season hits. Acting quickly can prevent mold, wood rot, and structural damage.
Water damage does not wait
Water keeps spreading into floors and walls, so it is worth acting early. Calls are answered 24/7.
Call Now (425) 407-5186Frequently asked questions
How do I know if the slope is causing the problem?
Place a level on a long board laid across the ground near the foundation. If the bubble sits toward the house, the ground slopes inward. Also check where puddles form after rain. Water that sits within a few feet of the wall is a sign of poor grading.
Can I fix the pooling myself?
Yes, for minor issues. Add soil to low spots, extend downspouts, and clean gutters. If the pooling continues or you see cracks in the foundation, call a pro. Digging and waterproofing are bigger jobs that need equipment and experience.
Will my insurance cover foundation water damage?
Policies vary, and your insurer decides what is covered. Water damage from flooding or seepage is often excluded, while sudden pipe bursts may be covered. Check your policy and talk to your insurance company to understand your specific situation.