Concrete masonry units have come a long way since the term “cinder block” was coined. Jandris Block has been manufacturing Architectural CMU since the 1970s.
Jandris Block is a New England business that manufactures a complete line of concrete masonry products. Four generations of experience have positioned us as the New England leader in concrete masonry product manufacturing.
We operate a 25-acre facility in Central Massachusetts featuring a 17,000 sq ft grinding plant, 7 acres of covered product storage, and 2 concrete block manufacturing plants. Our service area covers a 500-mile radius — most of New England, the New York Tri-State Area, and parts of Pennsylvania. 70% of our aggregates are drawn within 10 miles of the plant.
Fractured using a splitter to expose natural aggregates, creating a natural “rock-like” surface. Our most popular architectural finish. Extremely durable, fire and mold resistant.
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Surface ground to expose internal aggregates with a smooth, matte finish. Resembles natural stone. Ideal where a maintenance-free wall system is desired.
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Processed through several stages of vigorous polishing to achieve a gloss finish similar to polished granite or marble. Contemporary and sleek.
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Subtle reflective qualities with a textured surface. Reflective aggregates stand out against a muted background, creating a unique low-maintenance finish.
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Available in a multitude of colors with a “natural” finish without showing aggregate. Maintenance-free for interior and exterior applications.
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Available in a multitude of colors with a “natural” finish. Rounded fluted block and prism block for a traditional, retro aesthetic.
DetailsAll architectural finishes are available in various shapes and sizes, including half units, half high units, bond beams, lintels, corners, multiple face units, scored units, bevels, bullnose, and custom shapes.
| Nominal Size | Actual Size (WxHxL) | Weight |
|---|---|---|
| 4x8x16 | 3⅝×7⅝×15⅝ | 26 lb |
| 6x8x16 | 5⅝×7⅝×15⅝ | 33 lb |
| 8x8x16 | 7⅝×7⅝×15⅝ | 38 lb |
| 10x8x16 | 9⅝×7⅝×15⅝ | 43 lb |
| 12x8x16 | 11⅝×7⅝×15⅝ | 53 lb |
Hi-R & Hi-R-H insulated units for energy code compliance and thermal performance. All architectural finishes are available with factory-installed Korfil insulation inserts, delivering tested R-Values up to R-18.
Learn about Insulated CMU
All architectural finishes are available with CarbonX technology, which lowers embodied carbon by reducing cement content and increasing CO₂ sequestration — by up to 50%, depending on the product.
Learn about CarbonX
Danvers, MA — Architectural CMU
Education
Developed by Kalin Associates in CSI format. Covers most architectural products.
Proper installation practices, mortar handling, and approved cleaning methods for all architectural finishes.
Developed by Kalin Associates in CSI format. Covers most architectural products.
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