Readymix Concrete vs Site‑Mixed Concrete: What’s the Difference?

When planning a construction project, one of the earliest decisions you’ll face is how the concrete will be mixed. Traditionally, concrete was often mixed on site, but today ready‑mixed concrete has become the preferred option for most domestic, commercial, and large‑scale projects.

So what’s the difference between readymix concrete and site‑mixed concrete, and which is the right choice for your project? Here’s a clear comparison to help you decide.

What Is Site‑Mixed Concrete?

Site‑mixed concrete is produced directly on the construction site, usually using a small mixer. The raw materials: cement, aggregates, and water are measured and combined manually or semi‑manually as the job progresses.

Advantages of Site‑Mixed Concrete

Suitable for very small jobs where only a limited amount of concrete is required

Materials can be mixed in small batches as needed
No reliance on delivery schedules

Limitations of Site‑Mixed Concrete

While site mixing can appear convenient, it comes with several drawbacks:

  • Inconsistent quality due to variations in measuring and mixing
  • Higher risk of weaker or non‑compliant concrete
  • Slower progress, particularly on time‑critical projects
  • Increased labour and material waste
  • Limited ability to produce specialist or high‑performance mixes


For anything beyond minor DIY tasks, these limitations can quickly become costly.

What Is Readymix Concrete?

Readymix concrete is manufactured at a controlled batching plant and delivered to site in a mixer truck, ready for immediate use. At Procon Readymix, concrete is produced using precise mix designs to meet specific strength, durability, and workability requirements.

Advantages of Readymix Concrete

1. Consistent Quality

Ready‑mixed concrete is produced under strict quality control, ensuring:

  • Accurate proportions
  • Reliable strength performance
  • Compliance with relevant British and European standards

This consistency is difficult to achieve with on‑site mixing.

2. Time and Labour Savings

With readymix concrete:

  • No on‑site mixing is required
  • Less labour is needed
  • Concrete is ready to place immediately on delivery

This helps projects stay on schedule, especially for foundations, slabs, and structural pours.

3. Reduced Waste

Concrete is supplied in the exact quantity required, reducing:

  • Excess material
  • Disposal costs
  • Site mess and cleanup

This also supports more sustainable construction practices.

4. Access to Specialist Mixes

Readymix concrete can be tailored for specific applications, including:

  • High‑strength structural concrete
  • Fibre‑reinforced concrete
  • Self‑compacting concrete
  • Concrete with enhanced durability or setting control

These mixes are impractical or impossible to achieve consistently with site mixing.

5. Improved Site Safety

Removing on‑site mixing equipment reduces:

  • Manual handling
  • Dust and noise
  • Trip hazards

This creates a safer, cleaner working environment.

Which Option is Right for You?

Site‑mixed concrete may be suitable for very small, non‑structural tasks, but for most construction work, the benefits of readymix concrete far outweigh the alternatives.

Readymix is the preferred choice for:

  • Foundations and groundworks
  • Floors and slabs
  • Structural concrete
  • Commercial and industrial projects
  • Time‑sensitive builds

Why Choose Procon Readymix?

At Procon Readymix, we combine reliable logistics with carefully designed concrete mixes to deliver:

  • Consistent quality, every load
  • Concrete tailored to your project
  • On‑time deliveries you can rely on

Whether you’re pouring a small domestic foundation or managing a large commercial build, our readymix solutions help you work faster, safer, and with confidence.

Want to find out more? Request a quote or give us a call on 020 8451 7880