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HydroSack Sandless Sandbag (Pack of 2)

Sandbags are hard work. Tiresome to fill. Difficult to move. And a nightmare to dispose of. They are also obsolete with the advent of the HydroSack:

  • UK & Europe’s best-selling sandless sandbag for flood protection
  • Only 500g but absorbs up to 20kg of water in just 2-3 minutes
  • Eco-friendly contents meaning easy disposal
  • Dimensions – 48cm wide x 60cm deep
  • Unique handles for easy placement
  • Packs of 2 Units
  • Row of 5 will protect a 2m patio door to 15-20cm in height
  • Can be stacked to give higher protection
  • 3-5 day delivery time

The HydroSack is the modern method to create a highly effective barrier to the threat of floodwater for domestic and commercial properties. Since launching in 2012, HydroSack has fast become one of the UK & Europe’s best selling sandless sandbag for domestic and commercial flood protection.

The HydroSack is a water-reactive temporary flood barrier for low-level flooding, constructed from a non-woven outer material with a super absorbent core. Before use, the HydroSack weighs less than 500g, but once the HydroSack comes into contact with water (absorption capacity up to 20 litres), it can then be used to defend against, and redirect floodwater.

The HydroSack’s unique handles allow minimal contact, and facilitate positioning of the barrier, making the HydroSack an ideal replacement for the traditional sandbag in forming a flood protection barrier.

The HydroSack is safe and easy to dispose of as the super-absorbent polymer and pulp are both eco-friendly: after use, the contents can be simply dispersed into the ground, or alternatively, they are suitable for landfill or incineration.

The HydroSack is widely used by Fire and Rescue Services in fire hydrant pit protection and maintenance, as well as for water redirection & pollution control.

Frequently Asked Questions

How long can they be stored before use?
5+ years if stored in their original packaging and kept dry.

How do I inflate/activate a HydroSack?
The quickest way to fully activate HydroSacks is to soak them in water using a bucket or tub of water and this will take 2-3 mins per unit. They can also be activated by spraying with a hose, or pouring water onto them, but will take slightly longer than soaking.

Can I lay them down dry to be activated by flood-water, and will they still be just as effective as a barrier?
We would always recommend activating them before laying them in place as:

  • The HydroSacks weigh very little before saturation with water, so may move out of position if left dry
  • If activated by flood-water, they are more dangerous to handle/dispose of than those activated by fresh water from a tap/hose as flood-water can be heavily contaminated.
  • If stacking a flood barrier with multiple layers, the HydroSacks may not swell to their full size if left to absorb only flood-water

Can they HydroSack be reused? Will they dry out and return to their original state?
Both the HydroSack will stay effective for 3-6months in situ once fully activated. After this time the product will require disposal. The inner contents of the HydroSack are degradable (to make them safe and easy to dispose of) so cannot return to their original state and be reused.

How do I dispose of HydroSacks after the flooding has subsided?
To dispose of a HydroSack, simply split the outer bag and the contents can be poured into the ground, and will degrade in a matter of weeks. Ecological studies have shown that the contents pose no negative risk to the environment or wildlife.

What is in a HydroSack that makes them swell with water?
They contain a mixture of Super Absorbent Polymer (SAP) and FSC (sustainably sourced) wood pulp. SAP is a compound used in disposable diapers and other super absorbent products. The SAP used in HydroSacks was specifically chosen for its eco-friendly nature, as there are other super absorbent compounds (and therefore other products utilising them in the market) that can be harmful to the environment, and are even banned in some countries.

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