For over 75 years, Lemay Concrete Block has been a trusted leader in manufacturing and supplying top-quality retaining walls, masonry, and ready-mix concrete solutions throughout St. Louis, Missouri.
In 1947, Leonard Fred Detmer needed concrete blocks for a project in his own yard. When he couldn’t find any, he decided to make them himself. Using just a single mold and a hand-crank mixer, he crafted 8" x 8" x 16" standard masonry blocks. As neighbors took notice, they began asking to buy blocks from him—and from those humble beginnings, Lemay Concrete Block was born. Today, the family continues to produce the same high-quality masonry blocks while expanding their product offerings to include ready-mix concrete, retaining walls, masonry blocks, outdoor kitchen and fireplace kits, and much more, with a commitment to continuous growth and innovation.
Our Benefits Why Choose Us?
Right here in St. Louis, Lemay Concrete Block Co is more than just a business – we're your neighbors, friends, and trusted local concrete block manufacturer and supplier. Every project we undertake reflects our commitment to this community and our dedication to quality craftsmanship. When you choose us, here's what sets us apart:
✅ Decades of Experience – Since 1947, we've built a reputation for quality and reliability.
✅ Superior Product Selection – From retaining walls to structural concrete parking curbs, we have it all.
✅ Trusted by Professionals – Proud members of the Concrete Council, Masonry Institute, and Missouri Contractor’s Association.
✅ BBB A+ Rated – A commitment to excellence that you can trust.
