140mm Thermalite Aircrete 3.6N Shield Block

Product Overview

Thermalite Shield aircrete blocks with a 440mm length, 215mm height, and 140mm width. These aircrete blocks are engineered for versatile applications in residential and commercial construction, offering a compressive strength of 3.6N/mm². The balanced formulation provides reliable structural performance alongside thermal efficiency, making them a practical choice for a wide range of masonry wall assemblies.

Their performance profile allows for use in various wall configurations, including cavity wall leaves and internal partitions, where structural load requirements are moderate. These blocks provide a consistent, moisture-resistant building medium that maintains stability in both internal and external environments.

The units are manufactured to precise standard dimensions, facilitating efficient laying and alignment. The product is designed with a specific density of 600kg/m³ and a standard width of 400mm.

Features & Benefits

• Compressive strength (3.6N/mm²): Provides the load-bearing capacity required for low-rise structural and partition walling.
• Thermal conductivity (λ = 0.15W/m·K): Delivers effective thermal insulation to reduce heat loss throughout the building envelope.
• Moisture resistance: Engineered to maintain durability and structural integrity in areas prone to damp conditions.
• Sustainable composition: Manufactured with 80% recycled content to support environmentally conscious building practices.
• Lightweight aircrete (600kg/m³): Improves handling efficiency and supports faster build times on-site.
• Standard face dimensions (440mm x 215mm): Ensures consistent coursing and compatibility with standard masonry practices.
• Width (140mm): Designed for wall layouts requiring greater thickness for enhanced structural stability or acoustic separation in the 140mm width.

Applications

• Cavity walls external leaf below DPC: Suitable for supporting wall assemblies in below-ground conditions.
• Cavity walls external leaf above DPC: Provides structural strength and thermal protection for the external building envelope.
• Cavity walls inner leaf above DPC: Delivers load-bearing support for internal structures above the damp-proof course.
• Cavity walls inner leaf below DPC: Maintains structural integrity for foundation-level masonry requirements.
• Separating walls: Facilitates robust partition construction between units for acoustic and thermal performance.
• Thermal Bridging Reduction: Aircrete's lower thermal conductivity compared to dense concrete blocks makes it the preferred choice at junctions where thermal bridging commonly occurs. window reveals, lintels, and wall-floor junctions.
  
  

Installation Guidance

• Surface preparation: Ensure foundations are level and free from debris to guarantee a stable base for the first course.
• Mortar application: Use thin-joint or traditional mortar to secure blocks, ensuring a strong bond and minimised cold bridging. 
• Jointing: Stagger all vertical joints across subsequent courses to distribute loads effectively and prevent cracking.
• Alignment: Use appropriate levelling tools during installation to maintain consistent wall plumb and finish.
  
  

Compliance & Performance

• Compressive strength (3.6N/mm²): Fully compliant with design requirements for low-rise structural walling.
• Service class: Rated for both internal and external masonry applications above ground level.
• Finishing: Engineered with a texture that provides an excellent key for the application of standard renders and plasters.
• Pallet Charge: Orders requiring a pallet will incur a refundable pallet charge. Our customer service team will confirm if this applies to your order.