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San Leandro’s diverse landscape, stretching from the Bay shoreline to the East Bay hills, presents a variety of foundation challenges. In the flatlands, homes built on soft bay fill or clay soils often experience settling and shifting, leading to foundation cracks and uneven flooring. In the hillside neighborhoods, soil erosion and movement can put additional pressure on foundations, requiring professional repair and leveling to ensure stability.
The city’s proximity to the Hayward Fault also makes seismic activity a significant concern for San Leandro homeowners. Many houses, particularly older ones, were built before modern seismic codes and may lack proper reinforcements. Seismic retrofitting—such as foundation bolting, cripple wall bracing, and the installation of shear walls—can help protect these homes during an earthquake and reduce the risk of structural damage.
Drainage issues are prevalent in San Leandro, especially in areas with poor grading or inadequate drainage systems. Heavy rains can lead to water pooling around foundations, increasing hydrostatic pressure and causing cracks or leaks. Installing effective drainage solutions, like French drains, sump pumps, and retaining walls, is essential to manage water flow and protect homes from long-term moisture-related foundation problems.
Larger Cracks Requiring Foundation Repairs
When cracks get to be 1/4 inch or larger, it is important to examine the cause very closely, and get to the source of the problem. Cracks that appear in stairs, vertical cracks, horizontal cracks and cracks in bricks or blocks suggest there may be serious underlying...
Drainage for Foundation Repairs
A common source of foundation problems is water accumulating in the soil around the foundation. The water causes the soil to expand which actually put pressure on the walls in the footings of the foundation. This pressure can cause cracks to appear. Start with the...
Foundation Repair Examples
Here are examples of foundation repair jobs.
Alameda Foundation Repair Cracks By Expansive Soil
The hidden force behind basement and foundation problems in Alameda What is an "Expansive Soil"? Expansive soils contain minerals such as smectite clays that are capable of absorbing water. When they absorb water they increase in volume. The more water they absorb the...
Common Foundations Repaired in Alameda, Berkeley, Walnut Creek, and surrounding areas
Some houses in Alameda have a raised perimeter foundation that supports load-bearing walls and floors. Other houses are built on flat concrete slabs that provide the bottom floor of the house as well as a base for the structure and. Other houses are built on a series...
Foundations buckling, bowing, or with severe cracks
Most houses have a raised perimeter foundation that supports floors and load- bearing walls. Perimeter foundations that are severely cracked , bowed, or tipped require rigorous reinforcement to prevent the situation from degenerating. Sometimes it is possible to...
Drainage Problems, Washed-out areas
Drainage Problems Drainage problems can cause a lot of problems to your foundation, and water being where it's not supposed to be should be corrected without delay. Water can actually wash out the soil your foundation sits on, and undermine the stability of your...
Foundation Repairs On The Rise – New York Times Article
Foundation Repair Rising The New York Times wrote an interesting article about foundation repair in March 2010. It does good job of describing what homeowners go through when they discover cracks opening up in good and walls. The problems described include...
Foundation Repair Manual
Foundation Repair Manual If you are interested in technical aspects of foundation repair, you will want to check out the "Foundation Repair Manual. The #1 guide to foundation repair Per reviews from Amazon: This book offers the most authoritative source of information...
Most Mold Problems Caused By Drainage Problems
Mold, musty odors and mildew are often caused by poor drainage. Fixing the drainage is the only way to fix the problem so it doesn't keep happening over and over. More information will follow on this page.