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Legacy Concrete LLC

Concrete Foundation

C Concrete foundations are the base for the best of buildings. At Legacy Concrete LLC, we build full and daylight basements, crawl spaces, slabs, and more. There are several concrete foundation types.

A traditional T-Shaped foundation supports a structure where the ground freezes. A footing is poured below the frost line then walls are added on top of the footing to form an upside-down T. The footing is wider than the walls and a slab is poured between the walls.

Slab-on-grade foundations is a single layer slab that is several inches thick. It is poured to be thicker at the edges and usually rests on a bed of crushed gravel with casing wire mesh to reduce cracking. This type of foundation is best used where the ground doesn’t freeze but insulation can be added to help reduce heaving caused by frost. Frost protected foundations work only with a heated structure. It uses strategically placed rigid polystyrene insulation to prevent freezing in areas where slab foundations are prone to frost.

“The concrete turned out beautifully with great attention to detail.”

Legacy Concrete LLC provides professional concrete contractor services for all types of concrete foundation projects in the cities of Sammamish, Mercer Island, Bothell, Bonney Lake, and Renton Washington along with all the cities in surrounding Puget Sound and Greater Eastside areas of King County, Pierce County, and Snohomish County Washington. Our office is in Auburn, WA.

Our Reviews

Awesome people to work with. Showed up on time and did an excellent job. Would hire again in a heartbeat.

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… the crew did a beautiful job. They showed up exactly when they said they would, were meticulous in their prep, and did a great job.

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