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Concrete Block Manufacturers

Last updated: January 2026

This directory lists 84 concrete block manufacturers across the United States, from high-volume standard CMU producers to specialized architectural block fabricators.

Buyers in this category are typically solving critical structural, aesthetic, and environmental challenges. They need suppliers who can guarantee not only specified compressive strength and precise dimensional tolerances but also specific aggregate blends for desired thermal performance or visual effects, and who can manage large orders for time-sensitive projects requiring consistent production across multiple shifts.

The manufacturers in this space vary significantly. Some focus on commodity blocks for foundational work, prioritizing cost-efficiency and high-volume output. Others specialize in architectural blocks, offering extensive ranges of colors, textures (e.g., burnished-face, scored), and custom shapes, often requiring more intricate mold vibration and curing processes. Then there are those who excel in engineered blocks, designed for specific loadbearing or thermal resistance applications, demanding stringent quality control and advanced material science.

Before engaging with manufacturers, buyers should arrive with detailed blueprints, exact specifications for block type (e.g., hollow, solid, lintel), required compressive strength, desired face finish, and any specific color or recycled content requirements. Suppliers, in turn, will expect clear delivery schedules, project scale, and any relevant certifications like LEED objectives, enabling them to provide accurate quotes and realistic lead times.

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Company Directory

84 companies nationwide

Acker-Stone Industries, Inc.

Corona, CA

Based in Corona, CA, Acker-Stone Industries, Inc. manufactures a variety of high-quality concrete pavers for both commercial and residential applications. Their product lines include standard, permeable, backyard, and rooftop pavers, serving clients in California and Arizona.

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Air-Vol Block

San Luis Obispo, CA

Based in San Luis Obispo, CA, Air-Vol Block manufactures a range of concrete masonry units (CMU Block), concrete pavers, and mortarless wall systems. They supply products for masonry and hardscape projects, serving contractors and landscapers across California's central coast.

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Al's Concrete Products

Gardena, CA

Al's Concrete Products, based in Gardena, CA, specializes in manufacturing high-quality concrete products. The company is committed to customer satisfaction, offering its products at affordable prices with free estimates. They provide essential concrete materials, serving the construction and landscaping industries.

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American Precast Concrete Inc.

Pomona, CA

Based in Pomona, CA, American Precast Concrete Inc. manufactures designer concrete fencing and precast walls. They provide durable, high-quality precast concrete solutions for commercial builders, homeowners, engineers, developers, and architects, addressing various construction and property enhancement needs.

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American Precast Industries LLC

Based in Clarion, Pennsylvania, American Precast Industries LLC operates a state-of-the-art indoor precast manufacturing facility. The company specializes in producing the Redi-Rock Retaining Wall System and Pole Base products. They serve contractors and home projects across Pennsylvania, West Virginia, New Jersey, and parts of New York and Ohio.

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Angelus Block

Sun Valley, CA

Angelus Block is a manufacturer of concrete blocks, providing materials for construction projects. The company offers a 3D Unit Library, enabling users to generate and download SketchUp and ACAD models of their concrete block units for design and planning purposes.

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Basalite Building Products, LLC

Dixon, CA

Based in Dixon, CA, Basalite Building Products, LLC manufactures a wide range of concrete masonry products across the Western United States and Canada. The company specializes in high-quality pavers, robust wall systems, outdoor living kits, and various packaged concrete products for commercial and industrial construction projects.

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Bertelson Precast

Modesto, CA

Based in Modesto, CA, Bertelson Precast manufactures diverse high-performance precast concrete solutions for the construction industry. They produce pavers, stair treads, parking bumpers, and various site furnishings. The company emphasizes durable designs and quality craftsmanship.

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Best Block

Jacksonville, FL

Based in Jacksonville, FL, Best Block manufactures standard and architectural concrete masonry units. They offer a comprehensive range of block sizes, including 4, 6, 8, 10, and 12-inch blocks, plus specialized pilaster blocks. The company also provides pavers and integrated masonry solutions for diverse construction needs.

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Block-Lite

Flagstaff, AZ

Based in Flagstaff, AZ, Block-Lite is a third-generation, family-owned business. It manufactures a wide selection of standard and special order concrete masonry units (CMUs) and quality hardscape products. The company serves both DIY enthusiasts and contractors for masonry and outdoor living projects.

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Casilio Concrete

Based in Bethlehem, PA, Casilio Concrete manufactures high-quality concrete products, including interlockable concrete blocks for landscaping and retaining walls. Serving the Lehigh Valley for 87 years, the company operates facilities in Bethlehem and Nazareth, producing durable concrete goods with professional service.

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CastleLite Block

Dixon, CA

Based in Dixon, CA, CastleLite Block manufactures concrete masonry units, pavers, walls, and edgers. Operating for over 75 years, the company produces high-quality products sold factory direct. They provide solutions for outdoor living and landscaping projects in the San Francisco Bay Area and Sacramento.

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Cind-R-Lite Block Company

Las Vegas, NV

Based in Las Vegas, NV, Cind-R-Lite Block Company manufactures concrete blocks. With over 70 years of experience, they produce architectural, fence, retaining wall, and slump blocks. Offering diverse CMU options, their products serve residential and commercial construction projects in Southern Nevada.

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Comfort Block

Sanford, ME

Based in Sanford, ME, Comfort Block manufactures fully insulated concrete blocks for residential, landscape, and commercial projects. Their fire-resistant, mold-resistant blocks utilize G-mix®, a low-carbon formula with recycled content. Blocks assemble with adhesive for sound reduction, fast installation, and exceptional energy efficiency.

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Midwest Block & Brick

Jacksonville, FL

Based in Jacksonville, FL, Midwest Block & Brick manufactures and distributes concrete block, retaining walls, pavers, brick, stone, and other masonry and landscape products. The company offers a diverse range of building materials for commercial and residential construction projects.

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Cranesville Block Co., Inc.

Amsterdam, NY

Cranesville Block Co. Inc. is a third-generation family business based in Amsterdam, NY. With over 25 stationary plants, the company manufactures various concrete products, including blocks, to serve commercial and industrial clients throughout Upstate New York. They focus on concrete production and distribution.

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Crown Brick & Supply Inc

Crown Point, IN

Based in Crown Point, IN, Crown Brick & Supply Inc manufactures concrete blocks. The company also supplies bricks for construction projects, serving both homeowners and commercial builders throughout Indiana and the Chicagoland area.

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CTU Precast

Olivehurst, CA

Based in Olivehurst, CA, CTU Precast manufactures diverse precast concrete products for architectural, structural, and specialty applications. As a Caltrans and PCI Certified plant, they offer comprehensive services including design, production, delivery, and installation. They serve Northern California's construction needs.

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Del Zotto Products of Florida, Inc.

Ocala, FL

Based in Ocala, FL, Del Zotto Products of Florida, Inc. manufactures solid concrete blocks with interlocking features. The company also provides a range of precast concrete forms and pours custom reinforced concrete products for commercial, industrial, and residential applications.

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Elliott Precision Block Co

San Bernardino, CA

Based in San Bernardino, CA, Elliott Precision Block Co manufactures a wide range of concrete masonry units (CMU), including precision, split-face, and slump blocks. With over 70 years of experience, the company provides versatile and utilitarian concrete solutions for various construction projects.

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Glenwood Masonry Products Inc.

Brooklyn, NY

Based in Brooklyn, NY, Glenwood Masonry Products Inc. directly manufactures concrete block and brick. The company, the only manufacturer within New York City's five boroughs, provides sustainable and budget-friendly masonry materials for various construction projects through its Superior Block Corporation.

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County Materials Corporation

County Materials Corporation is an American-based manufacturer specializing in concrete construction and landscape products. The company produces a wide range of concrete pavers, available in various colors, shapes, sizes, and textures, suitable for creating patios, pool decks, and driveways, all manufactured with high quality aggregates.

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Island Block Manufacturing

Wyandanch, NY

Based in Wyandanch, NY, Island Block Manufacturing specializes in producing concrete blocks, concrete pavers, and retaining wall systems. The company also provides a variety of masonry materials, including brick, clay products, cultured stone, and natural stone, serving Long Island and surrounding areas.

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Las Vegas Paver Manufacturing

Las Vegas, NV

Based in Las Vegas, NV, Las Vegas Paver Manufacturing produces commercial quality concrete pavers, Mesa Walls, and fire pits. The company operates a new, purpose-built manufacturing facility, offering diverse paver styles and color mixes tailored for Nevada architecture and commercial projects.

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Los Angeles Cast Stone

Pasadena, CA

Los Angeles Cast Stone manufactures custom and standard architectural cast stone products. Specializing in high-quality precast concrete elements, the company serves commercial and residential projects across Southern California with durable, aesthetically pleasing building materials for diverse applications.

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Maschmeyer Concrete

Lake Worth, FL

Based in Lake Worth, FL, Maschmeyer Concrete is a manufacturer of concrete masonry units (CMU), also known as concrete block. The company produces a comprehensive selection of standard gray, specialty, and colored blocks, along with lintels and sills, for residential, commercial, and architectural projects.

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McNear Brick & Block

San Rafael, CA

Based in San Rafael, CA, McNear Brick & Block manufactures building materials including traditional and thin clay bricks, along with concrete interlocking pavers and Versa-Lok segmental retaining walls. Operating since the 1800s, McNear supplies durable concrete and brick products for commercial and residential projects nationwide.

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Mid-State Concrete Products

Santa Maria, CA

Based in Santa Maria, CA, Mid-State Concrete Products manufactures and supplies concrete masonry units. They offer various concrete blocks including standard gray, lightweight, split face, and slump blocks. Additionally, the company provides pavers and segmental retaining wall systems for diverse construction applications across the region.

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Midstates Precast Products Inc.

Bondurant, IA

Midstates Precast Products Inc. is a QCAST Certified manufacturer of precast concrete solutions, based in Bondurant, IA. They operate a state-of-the-art plant, producing high-quality concrete products using advanced machines and forms. The company serves commercial and industrial clients, focusing on meeting project deadlines.

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Midwest Dock Blocks LLC

Salisbury, MO

Based in Salisbury, MO, Midwest Dock Blocks LLC manufactures precast concrete blocks featuring wire reinforcement for superior strength. The company utilizes 100% computer-controlled batching for precise material weights, ensuring consistent quality. They produce up to 1,000 blocks daily in two standard sizes, offering an innovative and maintenance-free solution.

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Mutual Materials

Port Orchard, WA

Mutual Materials manufactures and supplies Concrete Masonry Units (CMU) across the United States and Canada. They provide a diverse selection of CMU, including various colors, shapes, and textures, catering to a wide range of construction and architectural needs.

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National Precast

Based in Vancouver, WA, National Precast is a single-source provider specializing in the design, manufacturing, and installation of precast concrete solutions. With over 140 years of experience, the company delivers diverse concrete products for various construction needs, aiding project efficiency.

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Nitterhouse Masonry Products

Nitterhouse Masonry Products is a direct manufacturer of concrete building blocks. Based in Chambersburg, PA, the company produces strong, environmentally friendly concrete blocks using sand, rock, cement, and water. Their products are suitable for both exterior and interior construction applications, serving commercial and industrial clients.

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Oneonta Block Company

Oneonta, NY

Based in Oneonta, NY, Oneonta Block Company manufactures a variety of concrete products, including blocks, pavers, precast concrete, and retaining walls. They also supply bag goods, clay/chimney items, drainage solutions, and masonry reinforcement, providing quality and sustainable solutions for diverse construction projects.

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ORCO Block & Hardscape

Oceanside, CA

Based in Oceanside, CA, ORCO Block & Hardscape manufactures masonry and hardscape products. They produce CMU, concrete blocks, cinder blocks, pavers, and mortars. With over 75 years, ORCO offers fire-safe, sustainable, and structurally sound products, available in diverse colors, textures, and modular shapes.

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Our Block Co.

Phoenix, AZ

Our Block Co. manufactures individually cast artisan concrete blocks with smooth finishes and close tolerances from high-quality materials. They specialize in unique breeze block designs for modern builders, offering both full-size products and scaled gypsum samples. Based in Phoenix, AZ, the company provides local pickup and LTL/FTL freight delivery across the USA and worldwide.

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Outcast Concrete Products

Pittsburg, CA

Outcast Concrete Products is a manufacturer based in Pittsburg, CA, specializing in high-quality concrete products. The company offers a wide array of standard and custom designs, focusing on timely delivery for larger scale projects. They emphasize customer satisfaction, transparency, and pride in manufacturing durable products.

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Palumbo Block Co Inc

Dover Plains, NY

Based in Dover Plains, NY, Palumbo Block Co Inc is a family-owned manufacturer and supplier of concrete masonry units (CMU). They produce standard, colored, and specialty concrete blocks, along with retaining wall systems and pavers for contractors and homeowners in the Hudson Valley.

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Precast Manufacturing Company

Phillipsburg, NJ

Based in Phillipsburg, NJ, Precast Manufacturing Company specializes in a wide range of precast concrete products. Since 1976, they have manufactured concrete items, frames, grates, covers, and pipes for various applications. The company also supplies geotextiles.

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RCP Block & Brick

Chula Vista, CA

Based in Chula Vista, CA, RCP Block & Brick manufactures concrete blocks and a wide selection of hardscape and masonry supplies. Serving San Diego County and the Temecula Valley, they provide concrete pavers, retaining wall blocks, and other materials to contractors and homeowners from seven retail locations.

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Shea Concrete

Based in Amesbury, MA, Shea Concrete is a manufacturer of precast concrete products for commercial and industrial clients. Their offerings include various concrete block products, septic tanks, drainage solutions, and retaining walls. The company has served the industry for over 70 years.

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SI Precast Concrete

SI Precast Concrete manufactures custom and precast concrete products, including wet cast concrete blocks for Redi-Rock retaining wall systems. With 50 manufacturing plants, the company supplies agricultural solutions such as cattle guards and feed bunks, catering to commercial and residential projects.

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SpeedBlock Inc.

Palo Alto, CA

Based in Palo Alto, CA, SpeedBlock Inc. manufactures revolutionary large format, structural hollow concrete masonry units. Their proprietary wet cast process creates precast, precut blocks that reduce build times by up to 80% and are 300% stronger than traditional CMU, offering significant project savings.

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StackWall Manufacturing

Pomona, CA

Based in Pomona, CA, StackWall Manufacturing produces durable prefab concrete products. They specialize in fireproof prefab concrete fences, designed for longevity, resilience, and year-round weather resistance, providing a primary defense against natural elements. Product lines include stone, wood, modern, and brick collections.

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Superior Block Co. Inc.

Houghton, MI

Based in Houghton, MI, Superior Block Co. Inc. manufactures high-quality concrete blocks for various construction projects. Their product range includes standard concrete blocks, architectural blocks, retaining wall blocks, and paver blocks, available in diverse sizes and shapes to meet specific project needs.

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Terre Hill Concrete Products

Based in Terre Hill, PA, Terre Hill Concrete Products manufactures concrete block and masonry supplies. With over a century of experience, their Block Division produces high-quality concrete blocks. They also offer precast stormwater block products, serving commercial and infrastructure projects across the region.

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Tesselle

Riverside, CA

Based in Riverside, CA, Tesselle manufactures and supplies premium cement breeze blocks and artisan cement tiles. They offer a wide selection of patterns and colors, with in-stock options available for nationwide delivery. Tesselle caters to both individual and project orders, providing discounts and a sample program.

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Texas Building Products

Strawn, TX

Founded in 1991, Texas Building Products manufactures concrete masonry units (CMU) including standard, split face, burnished, and polished block units. The company also produces Spectra-Glaze II, glazed block, at its North Texas plant. Serving the entire US, they offer a large inventory and short lead times for custom orders.

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The Perfect Block

Peoria, AZ

Based in Peoria, AZ, The Perfect Block manufactures an Insulated Composite Concrete Form (ICCF) building system. Their blocks, made from recycled EPS and Portland, provide superior strength, insulation, fire resistance, and protection against termites. This complete system offers significant advantages for robust and efficient construction.

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Unilock

Tonganoxie, KS

Unilock manufactures concrete interlocking paving stones, segmental wall products, and hardscape materials like slabs, fire features, and step units. Based in Tonganoxie, KS, they supply products to contractors, builders, architects, and homeowners. Their offerings are used for outdoor living projects including driveways, patios, and walls.

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United Concrete Products, Inc.

Wallingford, CT

United Concrete Products, Inc. specializes in providing precast concrete solutions for infrastructure projects nationwide. With 70 years of experience and six manufacturing plants in the U.S. they produce a vast variety of precast concrete products, including DOUBLEWAL™ retaining wall systems and custom elements for bridges and underground applications.

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Verti-Block San Diego

Lakeside, CA

Based in Lakeside, CA, Verti-Block San Diego is an authorized producer and supplier of Verti-Block large retaining wall blocks. The company manufactures durable, interlocking concrete blocks for robust commercial and residential landscaping, erosion control, and infrastructure projects in the San Diego area.

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Westbrook Concrete Block Co., Inc.

Westbrook, CT

Based in Westbrook, CT, Westbrook Concrete Block Co. Inc. manufactures high-strength concrete blocks and bricks. Utilizing Pozzotive from recycled glass, they replace up to 30% of cement, reducing CO2 emissions. Their blocks boast 3x industry standard loading pressure and include masonry lines like Spectra Glaze, Omni Block, and WESTBRICKS.

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York Building Products

Based in York, PA, York Building Products manufactures a wide range of Split Face Architectural Concrete Masonry Units (CMU). The company provides durable and stylish concrete block options for various building projects, serving commercial and industrial clients with their construction material needs.

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Allan Block

Allan Block manufactures durable, easy-to-install concrete blocks for innovative retaining wall and patio solutions. The company offers products, comprehensive design resources, and expertise for residential, contractor, and design professional clients, helping them enhance outdoor spaces and tackle complex site challenges.

Email available

ICF Block Solutions LLC

Cape Coral, FL

ICF Block Solutions LLC manufactures insulated concrete forms (ICF blocks) designed for residential and commercial construction projects. Their innovative block system provides a durable, energy-efficient, and sustainable building envelope. They offer a comprehensive solution for contractors seeking high-performance building materials.

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Omni Block

Omni Block manufactures an insulated concrete block and thermally efficient building system. Their proprietary blocks achieve high R-values, meeting prescriptive energy code requirements. The company specializes in sustainable, energy-efficient construction solutions for commercial and industrial projects, with a presence in 34 U.S. states.

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Rock Hill Concrete

Based in Catasauqua, PA, Rock Hill Concrete is a third-generation, family-owned business. They manufacture stackable concrete blocks in Standard, River Rock, and Stack Stone styles. With over 70 years of experience, the company also produces ready-mix and lightweight blocks for commercial and industrial applications.

Email available

ABC Block + Brick

Little Rock, AR

Based in Little Rock, AR, ABC Block + Brick manufactures a wide range of concrete blocks and bricks. The company serves commercial and residential construction projects across Arkansas, Louisiana, Mississippi, and Missouri, operating various showrooms and production facilities.

Phone available

Beavertown Block Co., Inc.

Beavertown Block Co. Inc. is a family-owned concrete block manufacturer based in Beavertown, PA. They produce and deliver a wide range of high-quality concrete masonry units, including standard, architectural, chimney, and retaining wall blocks, as well as concrete pavers for construction and landscaping projects.

Phone available

Belgard

Belgard manufactures a diverse range of brick and concrete pavers for stone hardscapes, retaining walls, and other outdoor living applications. The company offers distinct and modular paver products, designed and manufactured regionally across the United States.

Phone available

Calstone Co

Gilroy, CA

Based in Gilroy, CA, Calstone Co manufactures a world-class line of premium paving stones, retaining walls, and landscape structures. Specializing in products for outdoor spaces, they offer a full range of blended colors and textures, made with advanced equipment and high-quality raw materials for lasting beauty.

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Cemex US

New Braunfels, TX

Cemex US provides durable and versatile concrete blocks engineered for various climates, including Florida's. Their products are ideal for residential, commercial, and infrastructure projects, supporting local development. The company operates facilities like its new Central Florida plant, focusing on resilient and sustainable construction strategies.

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Echelon Masonry

Echelon Masonry manufactures a comprehensive range of architectural and standard masonry products. They produce split face and rockface concrete blocks, insulated wall systems, structural brick, and mortar and grout. Products are manufactured regionally to meet diverse construction and design specifications.

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Easton Block & Supply

Easton Block & Supply manufactures high-quality block products, including foundation blocks of various sizes. As part of the H&K Group, the company contributes to a diversified family of heavy civil contracting and construction materials operations primarily serving the Mid-Atlantic Region.

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Inter-Block Retaining Systems Inc.

Valley Center, CA

Based in Valley Center, CA, Inter-Block Retaining Systems Inc. is a design-build manufacturer of large, interlocking concrete blocks. These specialized blocks are ideal for gravity retaining walls, security walls, railroad walls, flood control, and containment bins. Their system focuses on value engineering, delivering faster installation and less slope embedment for robust barrier solutions.

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Interlock Concrete Products

Interlock Concrete Products manufactures a variety of hardscaping products, including concrete pavers, wall blocks, tiles, and edgers. These products are designed to enhance outdoor living spaces with functional and aesthetic features for residential and commercial applications.

Phone available

Johnson Concrete Products

Willow Spring, NC

Based in Willow Spring, NC, Johnson Concrete Products manufactures and distributes architectural block, precast concrete pipe, and hardscape solutions. They supply a wide range of masonry materials, pavers, and retaining walls for both commercial and residential construction projects across the Southeast.

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J & R Concrete Products Inc

Perris, CA

J & R Concrete Products Inc, based in Perris, CA, manufactures and supplies a comprehensive range of concrete products. They specialize in custom concrete blocks, CMU, pavers, retaining wall blocks, and veneer stone, offering special finishes and on-site delivery for contractors and builders.

Phone available

Lee Building Products

Frankfort, KY

Based in Frankfort, KY, Lee Building Products is a manufacturer of brick and block products. The company also offers name brand distribution of hardscape, natural stone, and other masonry products, serving the construction industry.

Phone available

Lemay Concrete Block Co

St. Louis, MO

Based in St. Louis, Missouri, Lemay Concrete Block Co manufactures and supplies a range of concrete products. Offerings include retaining walls, masonry building blocks, pre-cast concrete, and ready-mix concrete solutions for various construction projects. The company has served the St. Louis area since 1947.

Phone available

Oldcastle Infrastructure

Tulare, CA

Oldcastle Infrastructure specializes in manufacturing engineered building product solutions for North America's infrastructure. The company focuses on strengthening structures and improving essential systems, including water, communications, and energy infrastructure, using precast concrete products.

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Ozinga

Ozinga, a family-owned American business, provides quality bulk materials and diverse concrete solutions. They manufacture concrete blocks from recycled concrete, offering options with 3000-4000 PSI strength. The company also provides extensive logistic solutions, utilizing truck, rail, barge, and ship terminals throughout the Midwest and South Florida.

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Peerless Block & Brick Co.

Saint Albans, WV

Based in Saint Albans, WV, Peerless Block & Brick Co. is a manufacturer and distributor of top-quality masonry products. They produce concrete blocks, retaining walls, and steps, also offering pavers and outdoor living solutions. The company serves customers in West Virginia and surrounding regions.

Phone available

Phoenix Paver Manufacturing LLC

Phoenix, AZ

Based in Phoenix, AZ, Phoenix Paver Manufacturing LLC specializes in the production of high-quality concrete pavers and wall blocks. The company manufactures a range of hardscaping products, including concrete pavers, wall blocks, sealers, and sand, catering to various landscaping and construction projects. They directly supply durable and aesthetically pleasing materials for outdoor living spaces.

Phone available

Premier Concrete Products, Inc.

Denham Springs, LA

Based in Denham Springs, LA, Premier Concrete Products, Inc. manufactures a variety of high-quality concrete products. They specialize in masonry and erosion control solutions for various onshore and offshore industries. Operating two state-of-the-art, automated facilities, the company supplies products across the Gulf South and globally.

Phone available

Quality Block Co. Inc.

Phoenix, AZ

Based in Phoenix, AZ, Quality Block Co. Inc. directly manufactures a wide range of concrete blocks. Their product offerings include Splitface Block, Scored Splitface Block, Construction Block, Fence Block, and Sonoran Block, providing versatile and durable solutions for various building and landscaping projects.

Phone available

Recon Wall Systems

Grand Rapids, MN

Based in Grand Rapids, MN, Recon Wall Systems specializes in manufacturing large-format concrete blocks for engineered retaining wall systems. The company provides durable, heavy-duty solutions for various infrastructure and landscape applications, serving the big block retaining wall industry with millions of square feet installed globally.

Phone available

Stepstone, LLC

Palo Alto, CA

Stepstone, LLC manufactures handmade, wetcast precast concrete solutions since 1963. They produce various concrete products including stair treads, pavers, wall caps, and pool coping for architects, builders, and end users. Their products are distributed through masonry suppliers, primarily in California and Nevada.

Phone available

Superior Walls

Based in New Holland, PA, Superior Walls manufactures precast concrete foundations, specializing in quality, energy-friendly, and custom designs. With over 40 years of experience, the company provides durable precast concrete solutions for residential and commercial construction projects.

Phone available

World Block Inc.

Duluth, MN

Based in Duluth, MN, World Block Inc. manufactures a variety of concrete blocks, specializing in V-interlock, knob style, and mid-size landscape blocks. The company also provides related accessories and form liners, catering to construction and landscaping project needs.

Phone available

CRH Americas

CRH Americas manufactures a wide range of building products, including concrete masonry and hardscape materials. Operating through brands like Belgard and Sakrete, the company provides essential multi-materials and infrastructure products for commercial, utility, and outdoor living projects across North America.

No contact on file

NexGen Block

NexGen Block manufactures proprietary, advanced interlocking Concrete Masonry Units (CMU's) engineered to be stronger than traditional blocks. Their sustainable and cost-effective CMUs are designed for builders, withstanding hurricane winds and requiring no mortar.

No contact on file

Pavestone Co

Winters, CA

Pavestone Co, located in Winters, CA, is a manufacturer of concrete blocks and related landscaping products. The company produces a wide range of concrete pavers and retaining wall systems for both commercial contractors and residential homeowners, offering durable and aesthetically pleasing outdoor solutions.

No contact on file

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How to Choose a Company

  • Verify their compliance with relevant ASTM standards like C90 (for loadbearing units) or C129 (for nonloadbearing units), and request current test reports for specified compressive strength, absorption, and density from independent labs.
  • Assess their capabilities for architectural blocks by confirming available tooling for specific face finishes (e.g., split-face, ground-face, burnished-face) and their track record for consistent color batching across large orders to avoid noticeable variations on site.
  • Inquire about their aggregate blend sourcing and quality control protocols; the type and grading of aggregates significantly impact the block's physical properties, thermal performance, and resistance to efflorescence.
  • Examine their curing process (e.g., high-temperature steam curing, atmospheric curing, autoclaving) as it directly affects the block's early and long-term compressive strength development and minimizes drying shrinkage.
  • Red Flag: Be wary of manufacturers who cannot provide clear documentation for their quality control checks or who consistently quote prices significantly below market average without a transparent explanation; this can sometimes indicate shortcuts in raw material quality or insufficient curing, leading to latent structural issues.
  • Clarify their logistical capabilities for handling and transporting concrete blocks, including their cubing methods and freight charges to your project site, as shipping heavy, bulky materials can be a major cost driver and impact the total landed cost.
  • For projects targeting green building certifications like LEED, confirm the manufacturer's ability to incorporate recycled content (e.g., fly ash, slag) or regionally sourced aggregates, and their readiness to provide documentation for material contributions and environmental product declarations (EPDs).

Frequently Asked Questions

What's the typical lead time for custom colored or architectural CMUs?

Lead times for custom colored or architectural concrete blocks are generally longer than for standard gray units, typically ranging from 4 to 12 weeks. This accounts for specialized mold setup, sourcing specific pigments, meticulous batching for color consistency, and extended curing cycles, especially if specialized face finishes like burnished or ground-face are required. Always confirm with the manufacturer, as production schedules and order volumes can heavily influence delivery.

How does the aggregate blend affect the final properties of a concrete block?

The aggregate blend is crucial; it determines the block's density, compressive strength, thermal insulation properties, and even its appearance. Lightweight aggregates (e.g., pumice, expanded shale, clay, or slate) produce lighter blocks with better thermal performance, while normal-weight aggregates (e.g., sand, gravel, crushed stone) yield denser, stronger blocks. The gradation of these aggregates also affects workability, shrinkage, and finished surface texture.

Are all concrete block manufacturers required to meet ASTM C90 standards?

Manufacturers producing loadbearing concrete masonry units for structural applications are generally expected to meet ASTM C90 (Standard Specification for Loadbearing Concrete Masonry Units). While not all blocks are loadbearing, and some regions may have specific local codes, adherence to ASTM C90 is a critical indicator of quality and performance for any structural block. Always verify the manufacturer’s compliance for your specific application, especially for structural integrity.

What's the difference between normal-weight and lightweight concrete blocks, and when should I use each?

Normal-weight blocks, typically made with sand and gravel, offer higher compressive strength and density, making them suitable for loadbearing walls and applications where structural robustness is paramount. Lightweight blocks, using lighter aggregates, reduce dead load on structures, offer better thermal insulation, and can be easier to handle, often preferred for non-loadbearing partitions or exterior walls where energy efficiency is a design priority.

How can I ensure color consistency across multiple batches of architectural blocks?

Ensuring color consistency requires several steps: specify a single manufacturer for the entire project, request a control sample for approval, and ensure the manufacturer uses precise digital batching systems for pigments. Inquire about their quality control process for color matching between production runs, and understand that minor variations can occur due to aggregate color shifts or differing curing conditions, even with the best practices.

What are the key considerations for shipping and handling concrete blocks to minimize damage?

Minimizing damage during shipping and handling involves several factors: ensure blocks are properly cubed and strapped on durable pallets, verify the use of protective shrink-wrap for moisture and abrasion, and confirm the freight carrier has experience transporting heavy masonry units. On-site, ensure proper equipment for unloading and storing blocks on level, well-drained surfaces, protected from excessive moisture or extreme temperatures before installation.

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