How does water come through the walls?

Poured concrete foundation walls are usually subject to water penetration through wall cracks. About 98 percent of foundation cracks form during the first 30 days after the walls have been poured. These types of cracks are not the result of a structural foundation flaw, but usually due to shrinkage or construction practices. Not all cracks will be readily noticeable, but will be detected once the cement inside the crack deteriorates.

The seepage will worsen over time, making the home susceptible to a variety of financial inconveniences, time-consuming cleanups, damaged possessions, poor indoor air quality, and the need of waterproofing a foundation. Other causes of wall leaks may result from tie rod ends, honeycombed concrete and pipe penetrations.