What Are The Disadvantages Of Decomposed Granite? 

Hello reader! Today we will know about the different disadvantages of decomposed granite. Granite is tremendously used by people in building, bridges, paving, monuments, and other many exterior projects. Everyone wants to decorate their home, so they found granite is a very simple and trendy way. You will find granite of different colors and sizes. So, you can use them at your choice and convenience. While talking about decomposed granite, it is granite rock that has weathered to the point that it readily fractures into small pieces or chunks of weak rock. Let me tell you the disadvantages of decomposed granite. 

What Are The Disadvantages Of Decomposed Granite?  

You may avoid using decomposed granite after knowing the disadvantages of decomposed granite, but don’t do it, because they also have some advantages. Here is the list of some cons of decomposed granite.  

  1. It gets Muddy 
  2. It Can Grow Weeds 
  3. It Can Erode 
  4. It Is Not Suitable In Certain Environments 
  5. It Requires Frequent Refilling 
  6. Debris May Damage Floors 
  7. Its Combination With Resin is Expensive 

Let’s understand these disadvantages one by one in detail. 

Top 7 Disadvantages Of Decomposed Granite 

There are several disadvantages of decomposed granite and here we have explained them in a detailed way.

  1. It gets Muddy 

Because decomposed granites are small in size and when they come in contact with water they get muddy. It may be washed away in heavy rainfall. Decomposed granite is composed of granite fines and small pieces of granite, this combination has a high tendency of fusing together with the presence of water, leading to change it from loose to muddy.

  1. It Can Grow Weeds 

How long does decomposed granite last? So, decomposed granite will last 7 to 10 years but you need to frequently clean weed growing on it. Because as time passes, DG stars grow weeds and also moss. When you install DG in your patio you need to have in mind that it is not maintenance-free like having concrete on your walkway. Maintaining decomposed granite is not that easy.

  1. It Can Erode 

When you use decomposed granite with some additives, it has a very high tendency to erode. And it tends to erode over time even when additives are used. It is because DG is made up of rocks that have weathered and can easily fracture into fine pieces. This makes it susceptible to erosion, especially during the winter when the rainfall is high.

  1. It Is Not Suitable In Certain Environments 

You can not use decomposed granite in places where heavy rainfall happens. It is obviously due to its nature. Because decomposed granite’s particles can become muddy and erode over time as a result of frequent rainfall.

  1. It Requires Frequent Refilling 

When you use decomposed granite you may need to refill your patio or the walkway from time to time. This is a result of possible erosions that may occur over time. When you refill it with the same color of decomposed granite, then this problem or erosion becomes more challenging.

  1. Debris May Damage Floors 

A strong difference between decomposed granite vs sand it, due to DG debris, may damage floors. It is common when you install decomposed granite near the entrance of your home. The granite can be tracked in by flooring.

  1. Its Combination With Resin Is Expensive 

People search for an alternative to decomposed granite because it becomes expensive when mixed with resin. But, you can minimize most of the disadvantages of DG by mixing it with resin.

Now, you may be curious to know, is decomposed granite safe? Yes, it is safe to install. If you don’t want Dg then you can go for crushed granite. While looking at the crushed granite vs decomposed granite, you find it offers a crisper look than DG.

Advantages Of Decomposed Granite 

The advantages of decomposed granite are, 

  • Affordable 
  • Offers Versatility 
  • Simple To Install 
  • Helps With Drainage 
  • Looks Great

You can learn much more on various topics on prozgo.com


What Is Another Name For Decomposed Granite?

Targasonne granite decomposing into decomposed granite and grus (“granite pourri,” rotten granite, and “arène granitique,” granitic sand), at the “Chaos” (moraine of the same name, near Font-Romeu-Odeillo-Via in the southern French département (county) of Pyrénées-Orientales.

What Happens To Decomposed Granite When It Gets Wet?

Once it has been wet and compacted, it creates less dust in dry conditions and less mud in wet conditions than the non-stabilized form. The finished appearance of stabilized D.G. is much more of a natural look compared to asphalt or concrete and is still considered a permeable surface.

Do Weeds Grow Through Decomposed Granite?

They appear to have simply sprouted there. Weeds, on the other hand, are slow to sprout in the compacted D.G. If they do simply hoe them out. Jerry Collins, a grading contractor in Tulare who uses a lot of D.G., says “nothing will grow through three to four inches of D.G., except maybe Bermuda grass.”

What Is The Difference Between Crushed And Decomposed Granite?

Crushed stone is closely related to decomposed granite (DG), but these rocks are not crushed as finely as DG. Both are popular for contemporary landscapes, but crushed stone offers a crisper look than DG. Pros: Crushed stone can be poured and compacted in any shape, providing design flexibility.

What Is Better Than Decomposed Granite?

Both are popular for contemporary landscapes, but crushed stone offers a crisper look than DG. Pros: Crushed stone can be poured and compacted in any shape, providing design flexibility. Crushed stone can be easily tamped or rolled into place, creating a stable surface for areas such as driveways.

Does Water Seep Through Decomposed Granite?

Decomposed granite can also be used to replace the lawn. The best part about it is that it’s still permeable, so rainwater will be able to get through into the soil beneath without running off and collecting near your home.

How Do You Keep Decomposed Granite From Washing Away?

Decomposed granite and wood chips might wash away. The solution: Place barrier material such as rolled straw wattle, sandbags or cement edgers to redirect the flow to an established drainage path or into an open bed. Use a broom to brush off as much ponding water as possible.


Rather than the above-mentioned disadvantages, decomposed granite has its own uniqueness in the field of home decoration. No other rock or sand can replace them. It gives a rich and cozy look to your house and walkways. But the question is, how to harden the decomposed granite? Simply, spread the pieces of granite on the selected area then allow it to soak with water. Allo the moit=st decomposed granite to sit for about eight hours and then compact it with a heavy roller or a vibrating plate compactor. This was all about the disadvantages of decomposed granite. 


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What are the disadvantages of decomposed granite?