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HydroSack Water Reactive Temporary Flood Barrier (Pk of 2)

MRRP £25.00 + VAT Our price £16.00 (+ VAT) Incl. VAT: £19.20
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Hydrosack is an innovative, state of the art flood protection product, perfect for fast and efficient emergency flood response. A non-toxic and environmentally alternative to sandbags, hydrosacks can be used domestically and commercially for flood containment and prevention, domectic leaks and dealing with sewage problems. They are capable of being used in or around:

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

How to use Hydrosacks

Hydrosacks protect against flooding by forming a protective barrier against flood water. Before deployment simply soak the hydrosack in water for up to 3 minutes and watch it inflate. This water crystallises and will be retained for up to 3 months. The hydrosack will let water in but not let water out.

Manoeuvre into the desired place using the easy grab handles. Supple enough to fit easily into openings and doorways the hydrosack will form an absorbent barrier against flood water. For superior results and increased protection, multiple hydrosacks can be stacked next to one another. The unique 3 section structure of the hydrosack allows a controlled spread which prevents the contents from moving from side to side.

After flood water subsides the contents of the eco-friendly hydrosacks can be deposited into soil without any harmful effects to the environment.

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)

The Benefits of Hydrosacks vs Sandbags

Hydrosacks are a non-toxic and environmentally friendly alternative to traditional sandbags which can be less effective and difficult to handle and store due to their heavy weight and bulk. Sandbags can also leak water and store toxins from flood water that can be hazardous to health.

Alternatively, hydrosacks are quick and easy to deploy, weighing around 10% of the weight of a sandbag before use and can be easily stored in bulk until they are needed. Simply soaking the hydrosack in water for around 3 minutes will make it ready to be used as a barrier to flood water. Containing pulp and a super-absorbent polymer (SAP) they are capable of absorbing 15-20 litres of water, which then crystallises to help the hydrosack expand to be used as a barrier. They will retain this water for up to 3 months. After use the hydrosack can be drained of its contents into soil without any harmful environmental effects as they do not absorb the waste, sewage and toxins from flood water.

  • 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 U
More Information
SKU 9000-4010
Manufacturer Anchor
Weight 2.0 Kg
Dimensions 440mm l x 190mm w x 110mm h (Pack Dry)


We offer free standard delivery to any UK address on a 3-5 working day delivery time on all orders over the value of £60 + vat. This is not weight restricted

Next day delivery is charged at £12.50 + vat for items under 35kgs.  Orders need to be placed before 5pm Mon-Thurs or 4:30 on Friday for guaranteed Next Day Delivery.

Next day delivery is not available for UK Highlands and Islands. Please click the following link to view postcodes/areas that don't qualify for next day delivery.


Due to some product specifications, there may be a lead time of up to 4 weeks. This is only on a small number of products and you will be contacted upon purchase and entitled to a full refund if required.

For Items over 35kgs, please review our delivery charges here

For full delivery terms please click here

International Delivery

If you want your order delivered to a remote area please contact our one of our Sales Representatives on 0800 112 3134 before placing your order and we will assist you further.


Please note specific items may incur a restocking charge as they are made to order, the cost of which, it determined by the manufacturer not ourselves. Items that are made to order or cut to specific length e.g. Hose cut to specific length may not be entitled to a refund.

Please contact customer services for clarification.

Unused, unaltered items may be returned at the buyers expense for credit upon Anchor Pumps prior written consent and upon the terms specified by Anchor Pumps.  The buyer assumes all risk of loss of such returned goods until actual receipt and acceptance by Anchor Pumps.  Please click here to view Returns information.

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