Skip to main content

In this article

    What is a Grass Aerator?

    7th March 2025

    Combine Aeration & Geo Injection to Revive Your Grass Lawn

    A lush, green lawn is something every homeowner wants, but poor drainage and compacted soil can make that difficult. If your garden often becomes waterlogged after rain or your grass looks unhealthy, a grass aerator could be the solution.

    Soil aeration machine used on a grass lawn

    What is a Grass Aerator?

    A grass aerator is a tool designed to improve soil drainage and boost lawn health by creating small holes in the ground. This process helps air, water, and nutrients reach the roots of your grass, making it stronger and more resistant to damage.

    Why is Lawn Aeration Important?

    Over time, soil can become compacted due to foot traffic, garden equipment, and natural settling. Compacted soil prevents water from draining properly, leading to puddles, patchy grass, and even moss growth. Aeration helps break up compacted soil, allowing moisture and air to flow freely and encouraging deep root growth.

    Types of Soil Aerators

    There are several types of aerators available, each suited to different lawn conditions:

    • Spike Aerators – These use solid tines or spikes to create small holes in the soil. They’re useful for minor compaction but don’t remove soil, so they can sometimes make the issue worse.
    • Plug (Core) Aerators – These remove small plugs of soil, creating better long-term aeration by reducing compaction.
    • Liquid Aerators – A chemical solution that breaks down compacted soil over time. However, results vary, and it’s not always effective.
    • Soil Injection Machines – Used by professionals like Cotswold Drainage, these high-tech machines inject air deep into the soil, creating air pockets to relieve compaction. They also use Carbon Gold Biochar, which enhances soil health and prevents future compaction.

    Soil injection with biochar

    What is a Soil Injection Machine?

    A soil aeration machine works by injecting high-pressure air into compacted soil, creating fractures and air pockets that improve drainage, aeration, and root penetration. This process relieves compaction and restores soil structure, making it more porous and oxygen-rich.

    The method is particularly beneficial for waterlogged or heavily trafficked areas, such as gardens, paddocks, and sports fields, where compacted soil restricts plant growth and drainage.

    To enhance the benefits of aeration, Carbon Gold Biochar is injected into the newly formed air pockets. This highly porous material helps prevent future compaction by stabilising soil structure while also improving moisture retention and microbial activity. By combining deep aeration with biochar treatment, soil health is significantly improved over the long term, leading to better drainage, increased nutrient availability, and more resilient ground conditions.

    Signs Your Lawn Needs Aeration

    If you’re unsure whether your lawn needs aeration, look for these signs:

    • Water sits on the surface after rain.
    • Grass looks thin, patchy, or weak.
    • Soil feels hard and difficult to dig.
    • High levels of moss or thatch buildup.

    Professional grass aeration

    The Benefits of Professional Lawn Aeration

    While DIY aerators can help, professional services using   Soil Injection Machines provide longer-lasting results. These machines aerate the soil more effectively than traditional methods and inject Carbon Gold Biochar into the ground. This not only improves drainage but also enhances soil quality, helping your lawn stay healthier for longer.

    Keeping Your Soil in Top Condition

    To maintain a strong, healthy lawn, regular aeration is key. If you’re dealing with serious drainage problems, a professional solution can prevent long-term damage. Cotswold Drainage specialises in soil aeration, using advanced techniques to keep your lawn looking its best.

    Need Help with Your Waterlogged Lawn?

    If poor drainage is affecting your garden, professional aeration could be the answer. Get in touch with Cotswold Drainage todayGet in touch with Cotswold Drainage today for expert advice and solutions tailored to your lawn’s needs.


    Get in touch

    Contact our friendly and professional team via form, phone or email for any drainage issues you may have.

    From blocked drains to septic tank repairs and replacements, we're here to help. We have over 25 years of experience and offer 24/7 emergency callouts.


    Great company, very helpful, very efficient
    - Barry Williams
    Great service - thank you
    - Nigel Arscott
    Excellent service, highly recommend.
    - Jayne Sargeant
    Excellent service and friendly and professional too.
    - Jonathan Jackson
    I'm a property manager and had to call on the services of Cotswold Drainage to empty a septic tank. Extremely personable and very helpful staff who have actually gone 'above and beyond' with other queries I had.
    - Matthew Gardiner Legge
    Fantastic service; needed them to do a CCTV build-over survey. Ended up having to get them out twice due to problems beyond their control, but they tried their best to work around those problems before having to give up. Was informed about arrival times, everyone I spoke to or saw was friendly and professional, and the report I got back was clear enough that even I could read it!
    - Drummond Ogilvie
    Excellent service from initial phone query through to getting the job done. They are professional, reliable and provide prompt, efficient service. Would recommend.
    - Lucy Bird
      Please let us know your name.
      Please let us know your email address.
      Invalid Input
      Invalid Input
      Please let us know your message.

      Related Articles

      Does the engineer have everything they need in the van?

      How Fast Does a Septic Tank Fill Up?

      Repair, Not Despair: Fixing Collapsed or Misaligned Pipes