a warehouse containing sand in bulk

Best Sand for Sand Bags

Best Sand for Sand Bags

When it comes to flood defence and erosion control, the type of sand you use in your sand bags can make a significant difference. But what is the best sand for sand bags? In this blog post, we will explore the different types of sand available, their properties, and why choosing the right sand is crucial for effective sandbagging.

Understanding the Importance of Sand Type

The type of sand used in sand bags affects their weight, stability, and overall effectiveness. Using the correct sand ensures that the sand bags perform optimally, providing better protection against flooding and erosion.

Types of Sand for Sand Bags

  1. Coarse Sand

    • Properties: Coarse sand has larger particles and is less likely to compact tightly, allowing for better water drainage.
    • Best For: Coarse sand is ideal for creating sand bags that need to withstand high water flow and prevent water from pooling.
  2. Fine Sand

    • Properties: Fine sand compacts more tightly than coarse sand, creating a denser and heavier sand bag.
    • Best For: Fine sand is suitable for areas where a tighter seal is needed to block water completely.
  3. River Sand

    • Properties: River sand typically has rounded particles and can be a mix of fine and coarse grains.
    • Best For: River sand is versatile and can be used for both temporary and semi-permanent flood defences.
  4. Beach Sand

    • Properties: Beach sand can contain salt, which can lead to the degradation of the sand bags over time.
    • Best For: Beach sand is not recommended for long-term use due to its potential to damage the sand bag material.

Factors to Consider When Choosing Sand

  1. Availability
    • Choose a sand type that is readily available in your area to ensure you can fill your sand bags quickly and efficiently.
  2. Cost
    • While some sands might be more effective, they can also be more expensive. Balance cost with effectiveness for your specific needs.
  3. Purpose
    • Determine the primary purpose of your sand bags, whether it's for temporary flood barriers, long-term erosion control, or another use.

Tips for Filling Sand Bags

  1. Proper Filling

    • Fill sand bags halfway to three-quarters full. This ensures they are easy to handle and can be stacked effectively.
  2. Correct Placement

    • Place sand bags with the folded top facing upstream to prevent them from being lifted by water flow.
  3. Layering

    • Stack sand bags in a pyramid formation to create a stable barrier that can resist water pressure.


Choosing the best sand for your sand bags is essential for effective flood defence and erosion control. By understanding the properties of different types of sand and considering factors like availability and cost, you can make an informed decision that ensures your sand bags perform at their best.

Stay prepared by selecting the right sand and following proper sandbagging techniques to protect your home and property from flooding.

Check out our range of high-quality sandbags and contact us for more information.

Back to blog

Leave a comment

Please note, comments need to be approved before they are published.