How to Use Filled Sandbags to Protect Your Home & Business

How to Use Filled Sandbags to Protect Your Home & Business

When placed correctly in the right locations around your business or home, filled sandbags have the ability to reduce flooding damageWhen placed correctly in the right locations around your business or home, filled sandbags have the ability to reduce flooding potential. While they will not be able to stop the flow of water entirely, they can decrease the amount of water that comes into your property.




Where Filled Sandbags Should Be Positioned

It’s recommended that sandbags be positioned over drains in the bath, shower, and laundry areas or over floor wastes, to minimize flooding impacts and prevent a backflow of water from entering your home or business. They should also be placed in front of brickwork vents, roller doors, and doorways.

If your business or home is situated on a concrete slab, a sandbag wall may not be necessary for protection. An exception would be if the property is sitting on stumps or made of fibro sheeting or timber materials. Prior to constructing a sandbag wall, you should consider how trapped floodwater could be removed from between the building and your sandbag wall. Some examples of what you could use to remove the water include pumps, siphons, or bailing buckets.

You should make a small sandbag wall across all of your doorways. While the number of layers is typically two sandbag rows tall, it can vary depending on how high you expect the floodwaters to be. You should have one open doorway that can be used to enter or exit your home or business. This can be done by constructing a wall that will allow you to open the door. The photos below will show you how to do this.

If you have any air vents between your brickwork, these may also necessitate sandbags. Waterproof plastic or tape can be used to cover smaller vents.

Any floor drains or drainage holes you may have will need to be covered to prevent a backflow of unclean water. You should also use tape or sandbags to prevent the backflow of drains or air vents.

To prevent water backflow in toilets, each one of them should be blocked with one small plastic bag of sand weighed down by one larger sandbag.

How to Lay Filled Sandbags

  • Using plastic sheeting, place one layer on the ground. This will serve as a waterproofing membrane.
  • Filled Sandbags should be laid on top of the sheet, similar to the way bricks would be laid.
  • Start positioning the sandbags down at one end of the building until you reach the other end.
  • The next bag must cover the top part of the bag. Double check this to make sure.
  • Towards the end of each row, tuck each flap underneath the bag.
  • Rows should be purposely staggered so the joins don’t line up.
  • Each filled sandbag row should also be flattened prior to adding subsequent rows. This will help you construct a better overall structure.


Disposal and Storage of Filled Sandbags

Any filled sandbags that have been exposed to floodwaters must be discarded. Wear durable gloves when handling the sandbags, as they can contain harmful contaminants, waste, or chemicals. If any of the sandbags have been in contact with floodwaters, they should not be reused.

If some of your sandbags contain sand that wasn’t exposed to contamination or floodwater, they can be dispersed on gardens or lawns as topsoil instead of being washed down into storm drains.

Your local Council may be able to provide you with additional advice on how your contaminated sandbags can be disposed of. Find their number in your phonebook or on their official website and give them a call.

If you’re stocking sandbags for any particular reason, keep in mind that if they are damp or wet, they can rot. Storing the sandbags in a dry area will keep them out of the sun.

Contact NYP Corp or view our Filled Sandbags!