Our 100mm Ultra Lightweight Concrete Blocks – 3.6N are engineered for modern UK construction, providing a robust yet easy-to-handle solution for a wide array of building projects. These high-performance lightweight aggregate blocks combine essential structural integrity with enhanced thermal and acoustic properties, making them a popular choice for builders and developers seeking efficiency and compliance with building regulations.
Key Features and Specifications
- Dimensions: Standard 440mm (Length) x 215mm (Height) x 100mm (Width)
- Compressive Strength: A reliable 3.6N/mm² for dependable load-bearing applications
- Composition: Manufactured from lightweight aggregates, such as expanded clay, ensuring a lighter unit weight for easier handling
- Thermal Performance: Offers excellent thermal efficiency, with thermal conductivity typically ranging from 0.15 to 0.33 W/mK, contributing to reduced heat loss and improved energy ratings
- Fire Resistance: Achieves a Euroclass A1 non-combustible rating, providing superior fire safety for all building types
- Acoustic Insulation: Contributes to effective sound reduction, creating quieter internal environments
- Surface Finish: Features a granular texture that provides an excellent key for plasters, renders, and other finishes
- Durability: Robust and durable construction suitable for long-term performance in various environmental conditions
Applications
These versatile 100mm lightweight concrete blocks are suitable for a broad spectrum of construction applications, both above and below the damp-proof course (DPC). They are ideal for:
- Internal Load-Bearing Walls: Providing structural support in residential and commercial buildings
- External Walls: Used as an inner or outer leaf in cavity wall construction, or in solid external walls when appropriately rendered or clad
- Partition Walls: Excellent for creating internal divisions due to their acoustic properties and ease of installation
- Foundations: Suitable for use in foundation walls, offering a stable and secure base
- Beam and Block Flooring: An efficient choice for suspended floor systems
Delivery in and Around London
We offer reliable delivery services for our 100mm lightweight concrete blocks throughout London and the surrounding counties. Our delivery network covers all London boroughs, including Croydon, Lewisham, Southwark, Camden, and Hackney, as well as Greater London areas such as Enfield, Bexley, Redbridge, and Barnet. We also extend our services to neighbouring counties like Kent, Essex, Surrey, and Hertfordshire. Blocks are available in convenient pallet quantities, and we welcome trade orders of all sizes. Please note that delivery charges may apply, and lead times can vary depending on stock availability and location.

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