Concrete Block for Any Build

At Janesville Brick, we supply a full line of concrete masonry units (CMUs) directly from our sister company, Lakes Brick & Block in Zenda, Wisconsin. With decades of block manufacturing experience and a commitment to quality, Lakes Brick & Block produces reliable, consistent materials for everything from foundations and retaining walls to large-scale commercial construction.


Whether you're building a residential garage or a multi-story commercial facility, our concrete block products offer the structural integrity, fire resistance, and design flexibility required for modern construction.

Block Built for Strength, Stability, and Efficiency

Our inventory includes a wide variety of CMU sizes, strengths, and finishes to meet project specifications:


  • Standard Concrete Block – Common sizes (4", 6", 8", 10", 12")
  • Structural Load-Bearing Block – Manufactured to meet ASTM C90 specs for commercial applications
  • Split-Face Block – Adds texture and visual appeal to exposed surfaces
  • Retaining Wall Block – For landscape and site stabilization needs


From basement foundations to elevator shafts and fire-rated walls, our CMUs are trusted by contractors throughout Southern Wisconsin.

Direct from the Manufacturer: Lakes Brick & Block

As a partner of Janesville Brick, Lakes Brick & Block offers direct access to high-quality, locally made concrete block products, located in Zenda, WI.


Their commitment to precision production and material consistency ensures that your project stays on track—from the footings to the final course.

Applications for Concrete Block

Our CMUs are suitable for a wide range of construction types:



  • Residential basements and garages
  • Commercial foundations and partition walls
  • Schools, warehouses, and municipal buildings
  • Industrial facilities and agricultural structures
  • Retaining walls, site walls, and utility enclosures


Whether you're a general contractor, mason, or developer, you’ll find our concrete block products perform in both function and form.

Build with Confidence – Source Your Block Locally

By partnering with Janesville Brick and Lakes Brick & Block, you're working with a trusted, regional team that delivers dependable materials, expert support, and real project knowledge.


Contact us today for pricing, specifications, or to schedule a delivery.
We’re proud to serve builders across Rock County, Walworth County, and beyond with Wisconsin-made quality—block by block.