
Blocks
Aggregate and aerated concrete blocks
Tarmac are the UK’s leading blocks supplier
Our range of aggregate, dense and lightweight blocks are used across UK house building to offer reliability, quicker build times, higher thermal performance and to comply with Part L Building Regulations. Specialist blocks BBX are designed to provide dual protection against blast and ballistic threat, uniquely achieving C15 blast resistance and BR7 ballistic resistance. The Range includes Durox, Toplite, Topcrete, Hemelite, Fastfloor and BBX.
With unique combinations of thermal, acoustic and structural performance benefits, we have the block solution to suit every project.

Blocks range
U-value calculator
Calculate the thermal performance of varying wall configuration with our U-value calculator

Aircrete and aggregate blocks
Durox Aircrete Blocks, Toplite Aircrete Blocks, Hemelite, Lightweight Aggregate Blocks, Topcrete Dense Aggregate Blocks, Leading supplier of blocks for house building and home improvements.
From new housing to urban retail developments. Tarmac has a complete range of market leading aggregate and aircrete blocks. Our national network of manufaturing sites delivers in excess of 10 million HME per annum.
Our range of aggregate, dense and lightweight blocks are used across UK house building to offer reliability, quicker building times, higher thermal performance and to comply with Part L Building Regulations.
Specialist blocks BBX are designed to proide dual protecton against blast and ballistic threat, uniquely achieving C15 blast resistance and BR7 ballistic resistance.
The range includes Durox, Toplite, Topcrete, Hemelite, Fastfloor - Beam and Block and BBX.
With unique combinations of thermal, acoustic and structural performance benefits, we have the block solution to suit every project.



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Our highly qualified technical team is always on hand to ensure that customers receive the very best guidance and advice through every step of the build programme. Whether it’s assessing energy efficiencies, calculating U-values, advice on minimising thermal bridging or simply selecting the right block for any project, our technical team are more than happy to help.
- FASTFLOOR Thermal Thermal flooring system
- FASTFLOOR Rapid Large concrete blocks
- FASTFLOOR Beam and block Traditional flooring system
- TOPLITE Standard Aerated concrete blocks – TOPLITE Standard
- TOPLITE Foundation Aerated concrete foundation blocks - TOPLITE Foundation
- TOPLITE Floor Blocks Aerated concrete floor blocks – TOPLITE Floor Blocks
- TOPLITE Coursing Bricks Aerated concrete coursing units - TOPLITE Coursing Units
- TOPCRETE Standard Dense Concrete Block
- TOPCRETE RPW Dense Concrete block
- TOPCRETE Paint Quality Dense Concrete paint Quality Block
- TOPCRETE Foundation Dense Concrete foundation block
- TOPCRETE Coursing Bricks Dense concrete Coursing brick
- HEMELITE Standard Medium Density, Lightweight Standard Finish Hemelite Block
- HEMELITE Paint Quality Medium density Lightweight Paint Quality Hemelite Block
- HEMELITE Coursing Bricks Medium Dense lightweight coursing brick
- DUROX Supabloc Aerated Concrete Blocks – DUROX Supabloc
- DUROX Foundation Aerated Concrete Foundation Blocks – DUROX Foundation blocks
- DUROX Floor Blocks Aerated concrete floor blocks – DUROX Floors Blocks
- DUROX Coursing Bricks Aerated concrete coursing units – DUROX Coursing units