For over 35 years  GSI  has performed reliable, top quality grouting, soil stabilization and foundation support services helping our client for (in the field of) ground improvement and foundation underpinning.

We offer a full range of geotechnical grouting techniques for site improvement and foundation repair. We have extensive experience in the stabilization of both existing buildings and construction sites.

We are a licensed specialty contractor, holding California, Arizona, Nevada and Oregon state licenses.

We have a staff of trained engineers with extensive knowledge of and experience in soils engineering. Our work includes projects of all scales, ranging from individual single-story homes to multi-story buildings and structures such as bridges, culverts, highways, and sewage plants.

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