Comparison between Sandbagging and Flood Gates

Comparison between Sandbagging and Flood Gates

6 minute read

Whether you suffer from annual floodings due to snowmelt or heavy rainfalls or want to prepare for the disaster due to authorities` reports and warnings, it is always better to research each flood protection solution and make an informed decision. Today`s customers mostly choose between classical sandbagging, a well-tested and credible method used for decades, and innovative solutions like temporary Flood Gates.

In this article, we decided to compare these popular solutions according to the following parameters:

  • Versatility;
  • Installation;
  • Cost;
  • Efficiency.

We have built this chart according to the most frequently asked questions and concerns of our everyday customers from all over the world. In case you have any questions and remarks after reading this article, you are welcome to contact Dam Easy and express them.

In this article, we shall consider median numbers and measurements. Due to landscape differences and various architecture and nature of floods that can occur in your area, numbers may vary in your particular case.

Please, make sure to contact the Environmental Agency or your local Emergency Srvices to specify the numbers and fit them to your particular case.

sandbagging at the door

Site selection.

Sandbagging

Site selection is a crucial matter when we talk about sandbagging. You must establish your dam at least 8 feet away from the building`s walls to have some space for maneuvering and prevent immediate direct contact with water once the dam fails.

It is also important to prepare the area properly. You will want to clear all the sand and ice, remove fallen leaves and debris that may alter the landscape, make the dam`s foundation soft and unstable.

Flood Gates

Flood gates are installed in the doorway of your building or gate passage directly. You may also use them to protect you're garage or basement. 

There is no need to prepare the doorway for the flood gate installation. The device itself has airbags that can be pumped after installation to fill the passage thoroughly and prevent water access.

However, you must inspect your building`s walls thoroughly and regularly. Even the smallest crack or leakage may become an open gate for water into your house in case of massive flooding.

flood gates

Amount and costs.

Sandbagging.

Let`s consider that we are preparing to build a 100 linear feet dike.

To create such construction,, you will need about 2000 bags for a 2-feet tall dike. Considering the cost of the material and delivery, one filled sandbag would cost you about $3. It means that a 100 linear feet dike would cost you about $6000.

Of course, the numbers are variable. Local emergency services provide their assistance in many regions, and the dike will come out much cheaper. Big chances, you will need a much more modest dike due to a minor threat.

However, if you have to face floods regularly, sandbagging may appear a pretty costly solution for you and your local government. Another thing to remember is that sandbagging is a one-time solution, meaning you will have to renew it (and pay again) with every new flood. 

Flood Gates

The cost of comprehensive protection using flood gates would depend on the size, architecture of your property, and the number of doorways and passages that can welcome water into your house.

You may also face some additional payments if you have to install connection poles for several flood gates if you have to protect a large garage or gate passage. 

However, there is one crucial aspect: flood gates and their accessories are a one-time investment. It means that you will have to purchase them once and then use them for many years. In other words, your investment into Flood gates pays off faster and does not require any additional payments.

sandbagging vs flood gates

Installation

Sandbagging

Technically, installing your sandbagging dike is a pretty easy procedure that didn`t change much during the centuries that sandbagging has been the most reliable anti-flooding solution.

To set your sandbags properly, you should:

  1. Fill the bags approximately half full;
  2. Put bags on top of each other in a "brick wall" manner. Make sure to lump the unfilled part of each bag under the fillet half of the top one;
  3. Tamp each new layer;
  4. Make sure that your dike is 3 times as thick as it is high. It means that a 2 feet tall dike should be 6 feet wide for maximum protection.

Flood gates

Despite their innovative nature, flood gates don`t require any special knowledge, skills, or effort for proper installation:

  1. Place your flood gate into the flood reveal;
  2. Extend flood pannels and inflate the pump to make the construction tight;
  3. Use the pump to activate the inflatable parts and seal the doorway on the sides and the bottom.

You may need to replace the inflatable parts with time due to natural wear-off. After replacement, your flood gates will serve you as well as new.

You may also install an additional security cove to protect the control parts of your barrier.

This job can easily be done by just one person and does not require any assistance from a handyperson or any other professional.

Efficiency

Sandbagging

Sandbags have been considered the most efficient and reliable anti-flooding solution for ages. Once installed and sealed properly with the additional layer of nylon, sandbags are efficient enough to divert floodwater away from your building and minimize the damage.

Technically, sandbags are considered safe and efficient in about 80% of cases, which is a pretty good rate for most of the flooding events reported worldwide today. However, one should not expect a water-tight seal from sandbagging simply due to the laws of physics and water`s ability to turn even the slightest breach in the construction into a welcoming gate.

sandbagging efficiency

Flood gates

Due to their optimal 28`` height and inflatable parts, flood gates provide a safe and sound seal to your doorways and passages. You may install connection poles to protect advanced passages like garage gates or barn doors. It makes flood gates the most and reliable, versatile solution available on the modern market.

Contact Dam Easy today and learn about our innovative anti-flooding solutions for all kinds of buildings and properties. Our qualified experts will answer all your questions and provide a personalized solution based on your property`s measurements and specifications.

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