Hydrosack Flood Protection - A Trusted and Reliable Defense Against Flooding

The Hydrosack is an innovative, eco-friendly flood protection product, perfect for fast and efficient emergency flood response. Designed for rapid deployment, HydroSacks® can be fully activated in 2–3 minutes by soaking in water, creating a robust and flexible barrier that helps protect homes, businesses, and outdoor spaces from flooding. They are suitable for use in the following environments: 

• Homes and driveways
• Building sites or commercial buildings
• Farms and agriculture
• Public buildings, schools and sports fields

Technical Specification:

• 2 x Hydrosacks supplied per pack
• Overall size: 480mm(w) x 600mm(l)
• Absorption: 15-20 Litres
• Inflation time: 2-3 minutes
• Weight before use: 0.5kg
• Weight after use: 15-20kg
• Handles: 2
• Shelf life: Kept undeployed, Hydrosacks are usable for 5 years
• Flood water protection depth: 5cm per sack
• Flood water protection depth when folded: 10cm per sack
• Flood water protection length: 45cm per sack
• Outer fabric material: Non-woven polypropylene with hydrophilic finish
• Internal materials: 9 x internal pads per sack made of super absorbent polymer (SAP) and pulp (both are non-toxic, eco-friendly and degradable)
• Lightweight (weigh less than 10% of a traditional sandbag)
• Absorbs up to 20 litres of water
• Retains weight for up to 3 months
• Inflates in 2-3 minutes
• Non-toxic and environmentally friendly
• Easy to manoeuvre
• Easy to store and transport in bulk
• Emptied easily without harmful environmental effects
• Manufactured in the UK

Frequently Asked Questions related to Hydrosacks

How do HydroSacks® protect against flooding?

HydroSacks contain pulp and a super-absorbent polymer (SAP) that absorbs 15–20 litres of water when soaked for 2–3 minutes. This water crystallises inside, creating a dense, flexible barrier that retains water for up to 3 months. 

How do I activate a HydroSack®?

Soak in a bucket or tub for 2–3 minutes for full activation. Alternatively, spray with a hose or pour water over them, which takes slightly longer.

Can I lay them down dry to be activated by floodwater?

This is not recommended. Dry Hydrosacks are lightweight and may move out of position. Floodwater activation can make them harder to handle and dispose of, and they may not swell fully for stacking.

How long can they be stored before use?

Over 5 years if kept dry in original packaging.

How do I dispose of HydroSacks® after flooding?

Split the outer bag and pour the contents into the ground. They will naturally degrade within weeks and pose no risk to the environment or wildlife.

What makes Hydrosacks a better choice for flood protection compared to traditional sandbags?

Unlike heavy, bulky sandbags, HydroSacks are lightweight and easy to store in bulk. They can be activated quickly, absorbing 15–20 litres to form a strong barrier that lasts up to 3 months. Sandbags can leak and often absorb contaminants such as sewage and toxins, requiring complex landfill disposal. HydroSacks remain clean and eco-friendly, making disposal simple whilst their contents can be safely emptied into soil without harming the environment.

Free UK Mainland Delivery is available on this item

Outlying Areas

A £5 Delivery Surcharge applies to postcodes: TR1-27 and some areas of rural wales.

A £15 Delivery Surcharge applies to postcodes: FK8, FK17-21, IV1-28, IV30-32, IV36, IV40, IV52-54, IV63, KW1-3, KW5-14, PA20-24, PA26-38, PA80, PH15-26, PH30-41, PH49-50.

Non UK Mainland

For delivery to non UK Mainland addresses please contact us on 0808 239 7985 for a quoted delivery price.

BT1-94, GY1-10, HS1-9, IM1-9, IV41-51, IV55-56, JE1-5, KA27-28, KW15-17, PA41-42, PA44-49, PA60-78, PH41-44, PO30-41, TR21-25, ZE1-3.

Hydrosnake Flood Protection

FSAC031

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