6" Concrete Blocks

6" Concrete Blocks - Premium Hollow CMU for Jamaica Construction

6" Concrete Blocks (Concrete Masonry Units) are Jamaica's most popular building blocks for residential and commercial construction. These standard hollow blocks provide exceptional strength, durability, and versatility for walls, foundations, and structural applications across Jamaica.

Why Choose 6" Concrete Blocks?

The 6-inch concrete block is the industry standard for most construction projects in Jamaica. These hollow CMU blocks offer excellent load-bearing capacity, thermal insulation, and fire resistance while being cost-effective and easy to work with. Perfect for homes, commercial buildings, retaining walls, and boundary walls.

Technical Specifications

• Size: 6 inches (nominal)
• Actual Dimensions: Approximately 5.5" x 7.5" x 15.5"
• Type: Hollow concrete masonry unit (CMU)
• Material: High-strength concrete
• Weight: Approximately 25-30 lbs per block
• Cores: Two-core hollow design
• Compressive Strength: Meets building code requirements
• Application: Load-bearing and non-load-bearing walls
• Finish: Standard grey concrete finish

Key Features & Benefits

• Industry Standard Size - 6" is the most common block size in Jamaica
• High Strength - Excellent load-bearing capacity for structural walls
• Fire Resistant - Non-combustible concrete construction
• Thermal Insulation - Hollow cores provide natural insulation
• Sound Dampening - Reduces noise transmission between rooms
• Weather Resistant - Withstands Jamaica's tropical climate
• Cost-Effective - Affordable building material for all projects
• Easy to Work With - Standard size fits with common construction practices

Ideal Applications

• Exterior Walls - Residential and commercial building walls
• Interior Walls - Room partitions and dividing walls
• Foundations - Foundation walls and stem walls
• Retaining Walls - Landscape and structural retaining walls
• Boundary Walls - Property perimeter walls and fences
• Commercial Buildings - Warehouses, shops, and office buildings
• Residential Construction - Homes, apartments, and townhouses
• Structural Columns - Reinforced block columns and pillars

Installation & Usage Tips

Mortar Mix: Use standard masonry mortar (1 part cement to 4 parts sand). Mix to proper consistency for good workability and bond.

Laying Blocks: Apply mortar to horizontal and vertical joints. Butter block ends before placing. Use level and string line to maintain straight, level courses. Stagger joints for strength.

Reinforcement: Fill cores with concrete and rebar for structural walls. Use horizontal bond beams at top of walls and above openings.

Coverage: Approximately 12.5 blocks per square meter of wall (including mortar joints).

Related Construction Materials

Complete your masonry project with quality materials from Graham's Hardware:

Essential Masonry Supplies:

• Cement: Carib Cement 42.5kg - Jamaica's #1 Portland cement for mortar
• Sand: All Purpose Sand | Washed Sand for mortar mix
• Reinforcement: 1/2" Rebar | 3/8" Rebar for block cores
• Gravel: Gravel for filling block cores

Browse Our Collections:

• Concrete Blocks & Masonry
• Building Materials
• Construction Supplies

Quantity Calculation Guide

Wall Area Method: Calculate wall area in square meters. Multiply by 12.5 blocks per square meter. Add 5-10% for waste and cutting.

Example: A wall 10m long × 3m high = 30 square meters × 12.5 blocks = 375 blocks needed (plus 5-10% waste).

Per Linear Meter: Approximately 12.5 blocks per linear meter of single-wythe wall at standard height.

Why Buy from Graham's Hardware?

As Jamaica's trusted hardware supplier, Graham's Hardware offers premium quality concrete blocks with competitive pricing, bulk discounts, and delivery across Jamaica. We stock fresh inventory and carry all the cement, building materials, and masonry supplies you need for complete construction projects.

Frequently Asked Questions

How many blocks do I need for my project? Calculate wall area in square meters and multiply by 12.5 blocks. Add 5-10% for waste. Our staff can help with calculations.

What's the difference between 6" and 8" blocks? 6" blocks are standard for most residential walls. 8" blocks provide extra strength for load-bearing walls and commercial construction.

Can I use 6" blocks for a retaining wall? Yes, 6" blocks work for retaining walls up to 4-5 feet. Taller walls may require 8" blocks or engineering design.

Do I need to fill the cores with concrete? For structural walls, yes - fill cores with concrete and rebar. For non-load-bearing partition walls, filling is optional.

How much mortar do I need? Approximately 1 bag of cement and 4 bags of sand per 100 blocks for standard mortar mix.

Do you offer delivery? Yes! Delivery available across Jamaica. Contact us for bulk pricing and delivery rates for large construction projects.

Order 6" Concrete Blocks Today

Build strong, durable structures with Jamaica's most trusted concrete blocks. Order online or visit Graham's Hardware for expert advice and competitive pricing. Browse our complete Building Materials Collection for all your construction needs!