About
Trusted Concrete Experts
A.J. Langlois & Sons is a family-owned concrete foundations company based in Manchester, New Hampshire, specializing in residential foundations for additions, garages, and small structures. The company is built on craftsmanship, reliability, and long-term durability — values reflected in its classic, professional brand identity.
Services
Garage Foundations
Frost Wall Experts
At A.J. Langlois & Sons Concrete Foundations, we specialize in expertly formed and poured frost walls designed to protect your structure from New England’s harsh freeze-thaw cycles. Frost walls extend below the frost line to prevent shifting, cracking, and long-term structural damage caused by ground movement.
Home Additions
Solid Foundations
Seamlessly tied into your existing home, our addition foundation walls are built for strength, stability, and long-term durability. Properly reinforced and poured to code, we ensure your new space starts on solid ground.
Slabs
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Smooth & Durable
We pour all types of concrete slabs, including garage slabs, basement slabs, shed slabs, and addition floors. Properly prepped, reinforced, and finished for long-term durability, our slabs are built to handle New England weather and everyday wear. Level, solid, and built to last — every time.
Benefits
Reliability
Innovation
Customer Satisfaction
Client Testimonials
Chris
Adam was very professional, punctual, and extremely knowledgeable about every step of the foundation process. Communication was clear and the quality of workmanship was outstanding.
They truly take pride in their work, and it shines through in the impeccable precision, outstanding durability, and the spotless job site they left behind! Our family has enjoyed countless hours on the back patio, which has a delightful topic of conversation for our guests!
Mike
Project threw them a few curveballs but Adam’s professionalism showed with direct communication and his ability to adapt and make sure our addition had a solid foundation for the builders to work off.
John