About SteelPhalt

Sustainable asphalt solutions.

About SteelPhalt

Sustainable asphalt solutions.

High-performance roadmaking products.

SteelPhalt has been developing and manufacturing high-performance asphalt products for roadmaking in the UK industry.

Established in Rotherham in the 1960s, SteelPhalt is ideally located to source slag in a cost-effective manner from the surrounding steel industry – a sustainable way of making asphalt. Additionally, all SteelPhalt products use 95% recycled materials.

With a reputation for first-class products matched by a commitment to innovation and sustainability, SteelPhalt works in partnership with councils, local authorities and contractors to deliver durable roads for a sustainable world.

History of SteelPhalt

Since its foundation, SteelPhalt has become a byword for durable roads.

The brand SteelPhalt was launched in 1964 and has grown to become one of the busiest asphalt plants in the UK.

After celebrating 50 years in 2014, SteelPhalt embarked on its sixth decade with an evolving product portfolio and a reputation for technical support, responsiveness and on-time delivery recognized by manufacturers and engineers nationwide.

History of SteelPhalt

Since its foundation, SteelPhalt has become a byword for durable roads.

The brand SteelPhalt was launched in 1964 and has grown to become one of the busiest asphalt plants in the UK.

Steel slag has inherent properties that make it suitable as a surface course for roadmaking.

Some key properties include:

The exceptional strength and durability of steel slag extends the life of the road and increases the time between road maintenance needs.

Steel slag achieves and maintains high skid resistance throughout its whole life on the road as a result of its capacity to regenerate its surface roughness over time.

The use of steel slag avoids the use of quarried materials and avoids landfill of residual slag product.

Through detailed knowledge and experience of working with our roadmaking materials, we are able to offer various products to suit different application types.

SteelPhalt products in action

Application opportunity

The A633 Manvers Way was showing signs of fatigue and suffering from high levels of surface noise due to aggregate fretting from the previous HRA surface course.  

Recommended product

10mm of SteelPave Eco+ combining locally sourced recycled steel slag aggregate and a bio-binder derived from trees was recommended.

Results and benefits

580 tonnes of material was installed on Manvers Way in 2024 which delivered the durability, noise and carbon reduction, requirements of the local authority.

Application opportunity

Residential roads generally have low traffic volumes and lower speed requirements, where typically standard Asphalt Concrete mixtures to EN 13108-1 are specified.  

Recommended product

Working with the local authority, SteelDense was chosen as the standard choice for their residential schemes based on durability, performance and environmental benefits.  

Results and benefits

SteelDense performs to high standards, providing peace of mind that the material laid was low carbon, long-lasting and benefiting the local authorities’ budgets and communities.

About SteelPhalt

Sustainable asphalt solutions.

About SteelPhalt

Sustainable asphalt solutions.

High-performance roadmaking products.

History of SteelPhalt

Since its foundation, SteelPhalt has become a byword for durable roads.

The brand SteelPhalt was launched in 1964 and has grown to become one of the busiest asphalt plants in the UK.

History of SteelPhalt

Since its foundation, SteelPhalt has become a byword for durable roads.

The brand SteelPhalt was launched in 1964 and has grown to become one of the busiest asphalt plants in the UK.

Steel slag has inherent properties that make it suitable as a surface course for roadmaking.

SteelPhalt products in action

Application opportunity

Recommended product

Results and benefits

Application opportunity

Recommended product

Results and benefits