Technical guidance & resources

Technical Resources

Access the technical information, tools and documentation you need to specify, design and build with H+H aircrete.

Design & specification support

Technical information at every stage

Whether you're designing, specifying or building with H+H aircrete, our Technical Resources bring together the information you need in one place.

Access product and performance data, BIM objects and CAD details, certification and environmental documentation, thermal bridging guidance, safety information and practical technical support to help you make informed decisions throughout your project.

BIM objects and models

BIM Library

Construction details and drawings

CAD Drawings

Certification and compliance documents

CPR (UKCA) Certificates

Technical documents and datasheets

Download Centre

Environmental Product Declarations

EPDs

Technical performance data

Performance of Aircrete

Installation and technical guidance

Technical Videos

Thermal bridging guidance

Thermal Bridging

What is RAAC

RAAC

Aircrete Design & Specification Resources

Design & Specification Resources

Key Resources Available:

  • Structural design guidance for low-rise housing (up to three storeys)
  • Design support for higher-strength masonry applications
  • Eurocode 6 (EC6) design considerations for masonry structures
  • Detailed product information from below DPC to roof level
  • Guidance for:
    • Cavity wall construction
    • Solid walls
    • Internal partitions
    • Separating walls

 

These resources help ensure compliance with UK building regulations and industry standards.

About H+H Aircrete Blocks

H+H aircrete is widely used in modern construction due to its combination of strength, lightweight handling and thermal efficiency.

Key Benefits:

  • Lightweight blocks (most under 20kg) for easy on-site handling
  • High compressive strength and durability
  • Thermal conductivity values from 0.11 W/mK depending on block grade
  • Fully compliant with BS EN 771-4 aircrete masonry standards
Aircrete Block Grades & Applications

H+H offers a range of aircrete block grades to suit different construction needs:

Solar Grade

  • Enhanced thermal insulation performance
  • Ideal for external cavity walls and solid wall construction

 

Standard Grade

  • Versatile for above and below DPC applications
  • Suitable for general-purpose masonry

     

High Strength Grade

  • Designed for areas requiring higher load-bearing capacity

     

Super Strength Grade

  • Maximum strength for structurally demanding applications

 

This range ensures the right solution for residential, commercial, and multi-storey construction projects.

Finishes & Design Flexibility

H+H aircrete blocks are compatible with a wide range of finishes, allowing flexibility in both performance and aesthetics:

  • Render systems
  • Tile hanging
  • Decorative cladding

This makes aircrete an ideal choice for modern building design and architectural versatility.

Supporting Efficient & Compliant Construction

Whether you're designing a low-rise housing development or a multi-storey project, H+H provides the technical expertise and resources needed to:

  • Improve build efficiency
  • Ensure structural compliance
  • Optimise thermal performance
  • Reduce construction complexity

Technical Data

Celcon Blocks
Compressive Strength
Thermal Conductivity
Density
Solar Grade
2.9N/mm²
0.11W/mK
460kg/m³
Standard Grade
3.6N/mm²
0.15W/mK
600kg/m³
High Strength Grade
7.3N/mm²
0.18W/mK
730kg/m³
Super Strength Grade
8.7N/mm²
0.18W/mK
730kg/m³

Technical Datasheets

Single download view

File Document Type Type Size Date
TSD01 Fire Resistance June 2025 Coursing Units, High Strength Grade Blocks, Jumbo Bloks, Plus Blocks, Solar Grade Blocks, Standard Grade Blocks, Super Strength Grade Blocks
Datasheet
PDF
33 KB
05.05.26
PDF 33 KB 05.05.26 Datasheet
TSD43 Celcon Block Weights December 2024 Coursing Units, Foundation Blocks, High Strength Grade Blocks, Jumbo Bloks, Plus Blocks, Solar Grade Blocks, Standard Grade Blocks, Super Strength Grade Blocks
Datasheet
PDF
13.69 KB
05.05.26
PDF 13.69 KB 05.05.26 Datasheet
TSD57 Sound and Robust Details October 2024 Coursing Units, Foundation Blocks, High Strength Grade Blocks, Jumbo Bloks, Plus Blocks, Solar Grade Blocks, Standard Grade Blocks, Super Strength Grade Blocks
Datasheet
PDF
30 KB
05.05.26
PDF 30 KB 05.05.26 Datasheet
TSD44 Internal Plaster June 2025 Coursing Units, Foundation Blocks, High Strength Grade Blocks, Jumbo Bloks, Plus Blocks, Solar Grade Blocks, Standard Grade Blocks, Super Strength Grade Blocks
Datasheet
PDF
50 KB
05.05.26
PDF 50 KB 05.05.26 Datasheet
TSD45 External Render June 2025 Coursing Units, Foundation Blocks, High Strength Grade Blocks, Jumbo Bloks, Plus Blocks, Solar Grade Blocks, Standard Grade Blocks, Super Strength Grade Blocks
Datasheet
PDF
91 KB
05.05.26
PDF 91 KB 05.05.26 Datasheet
TSD62 Mortar Yields August 2021 Celfix Mortar, Foundation Blocks, High Strength Grade Blocks, Jumbo Bloks, Plus Blocks, Solar Grade Blocks, Standard Grade Blocks, Super Strength Grade Blocks
Datasheet
PDF
9.29 KB
05.05.26
PDF 9.29 KB 05.05.26 Datasheet

Need Technical Advice?

Our technical team can assist with specifications, U-value calculations, structural design, and product selection.