Premium Fire-Resistant CMU Block
Get My Price — Volume & Delivery Pricing

Ferroblock R™

Engineered for Smarter Construction

8x8x16" CMU Block  •  2 Hole Design Only

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Ferroblock R pallet at yard

Ferroblock R™

8x8x16 · 2 Hole · Factory Stock

Direct from Our Yards

Palletized and Ready
For Your Jobsite

Each pallet is stretch-wrapped and staged at our distribution yards across the Rio Grande Valley. Bulk orders are ready for same-week delivery to your construction site.

Stretch-wrapped pallets for safe transport
Available at all 4 RGV distribution yards
Same-week delivery on bulk orders
Factory-direct pricing — no distributor markup

Available Exclusively in
8×8×16" — 2 Hole Configuration

Ferroblock R™ is a high-performance concrete masonry unit engineered for commercial-grade construction. Manufactured using premium Cemex cement and regionally sourced aggregates, designed for durability, thermal efficiency, and fire resistance.

Why Ferroblock R™

Premium by Design

Fire Resistant

Engineered to withstand extreme temperatures, exceeding commercial fire-resistance standards.

Commercial Grade Strength

Tested under rigorous load-bearing conditions for multi-story and heavy-use applications.

Thermal Efficiency

Dual-cavity design creates natural insulation, reducing heating and cooling costs significantly.

Cemex Cement Quality

Manufactured exclusively with premium Cemex portland cement for guaranteed consistency.

RGV Tested

Every batch is tested by Estrata Laboratories in the Rio Grande Valley before shipment.

Regionally Sourced

Aggregates are sourced locally, reducing carbon footprint and ensuring material traceability.

Cement Specification

Manufactured with Cemex CPC 40

Cemento Portland Compuesto — meeting NMX-C-414-ONNCCE standards for structural concrete and high-strength applications.

Key Technical Specifications

Cement TypeCPC 40 (Portland Compuesto)
Compressive Strength40 MPa minimum at 28 days
Initial Setting TimeMinimum 45 minutes
Final Setting TimeMaximum 600 minutes
StandardNMX-C-414-ONNCCE
ColorHigh-performance grey

High Workability

Provides excellent cohesiveness, making the mixing, placing, and finishing process much easier on every pour.

Versatility

Compatible with all traditional construction materials, admixtures, and aggregates used in residential and commercial projects.

Controlled Heat of Hydration

Generates less heat compared to CPO 40, significantly reducing the risk of thermal cracking in thick structural elements.

Recommended Applications

Foundations, columns, slabs, precast elements, pavements, and structural concrete for residential and commercial housing.

Exclusive Cemex Portland Partner — Rio Grande Valley
Technical Specifications

Built to the
Highest Standard

Every Ferroblock R™ unit is produced under strict quality controls, tested by independent laboratories, and certified for use in residential and commercial structural applications across the Rio Grande Valley.

Dimensions8 × 8 × 16"
Configuration2 Hole Design
MaterialConcrete Masonry Unit (CMU)
ApplicationResidential & Commercial
Cement BrandCemex Portland
CertificationRGV Estrata Laboratories
Available at All 4 Yards

Ready to Build
Stronger?

Contact our sales team for bulk pricing, delivery scheduling, and project consultation across South Texas.