Decomposed granite (DG) is famous for creating attractive and functional pathways, driveways, and patios.

Its natural appearance and easy installation make it a favorite among landscapers and homeowners.

However, this comprehensive guide will walk you through everything you need to know about how to install decomposed granite, from the benefits to a detailed step-by-step process.

Benefits of Installing a Decomposed Granite Pathway

Decomposed granite offers several advantages that make it an ideal choice for pathways and other outdoor surfaces:

1. Natural Aesthetic

Decomposed granite has a rustic and natural look that blends well with any landscape.

Unlike other hardscaping materials that appear stark and industrial, DG's earthy tones and fine texture add warmth and character to outdoor spaces.

It comes in various shades, from golds and reds to browns and greys, allowing you to choose the amazing color to complement your garden or yard.

2. Cost-Effective

One of the most appealing aspects of decomposed granite is its cost-effectiveness.

DG is generally cheaper than other paving materials like concrete or pavers.

This affordability makes it an excellent option for large areas or projects on a budget.

Moreover, the installation process is straightforward and can be done as a DIY project, saving labor costs.

3. Permeability

However, DG is permeable, allowing water to seep through and reducing runoff.

This permeability helps manage rainwater, preventing erosion and promoting groundwater recharge.

Unlike impervious surfaces like asphalt or concrete, which can contribute to water runoff and potential flooding, DG pathways can help sustainably manage stormwater.

4. Easy to Maintain

Maintaining a granite-decomposed pathway is relatively simple. Compared to other materials, it requires minimal upkeep.

Regular raking and occasional re-compaction can keep the surface looking fresh and even.

If any depressions or low spots appear, they can be quickly filled with additional DG and compacted.

This ease of maintenance ensures that your pathway remains attractive and functional for years to come.

5. Versatile

Decomposed granite is a versatile material suitable for various landscaping applications. Moreover, it can be used for pathways, driveways, patios, and even garden beds.

Its flexibility allows for creative design solutions, whether you want a winding garden path, a sturdy driveway, or an elegant patio space.

What You'll Need for Your Decomposed Granite Pathway

However, before you begin, gather the necessary tools and materials:

1. Decomposed Granite

DG is the primary material for your pathway and is available in various colors and textures.

Ensure you have enough to cover your desired area with an extra 5-10% to account for compaction and future touch-ups.

2. Stabilizer

This is optional but recommended for added durability. A stabilizer helps bind the DG particles, making the surface more stable and erosion-resistant.

It is beneficial in areas with heavy foot traffic or where the pathway is exposed to rain and weather elements.

3. Landscape Fabric

To prevent weed growth. Decomposed granite landscape fabric is a barrier between the soil and the DG, preventing weeds from sprouting through and maintaining the pathway's clean appearance.

4. Steel Edging

To keep the DG in place. Edging helps define the pathway's borders and prevents the DG from spreading into adjacent areas.

It also adds a clean and finished look to your pathway.

5. Shovel

For digging and spreading the DG. A sturdy shovel will be essential for excavating the soil and distributing the DG evenly across the pathway.

6. Rake

To level the surface. A rake helps spread the DG evenly and ensures a smooth surface.

7. Plate Compactor

For compacting the DG. Additionally, compaction is crucial for creating a stable and durable pathway.

A plate compactor ensures the DG is tightly packed, reducing the risk of shifting or settling over time.

8. Garden Hose

This is for wetting the DG during compaction. Moistening the DG helps bind the particles together and makes compaction more effective.

9. Wheelbarrow

This is used for transporting materials. Moving large quantities of DG, stabilizers, and other materials around the site makes it more accessible.

Step-by-Step Guide to Installing a Decomposed Granite Pathway

Preparing the Site

1. Mark the Pathway

Use stakes and string to outline the area where you want the pathway.

This initial step helps you visualize the pathway's shape and ensures you work within the desired boundaries.

Adjust the outline as needed to achieve the perfect design.

2. Remove Existing Soil

 Using a shovel, excavate the soil to a depth of 4-6 inches.

Removing this top layer of soil creates space for the base layer and the DG.

Remove any roots, rocks, or debris interfering with the pathway's stability.

3. Level the Ground

Use a rake to create a level surface. A level base ensures that the DG will be evenly distributed and helps prevent water from pooling in low spots.

Take your time to achieve a smooth and even surface.

Installing the Edging

1. Place the Edging

Install steel edging along the pathway to keep the DG in place.

The edging should be set at the desired height, ensuring that it sits just above the final level of the DG.

This will help contain the material and give the pathway a clean, finished look.

2. Secure the Edging

Use stakes to secure the edging firmly in the ground. Drive the stakes regularly along the edging to ensure they remain in place and don't shift over time.

Laying the Base Layer

1. Add Base Material

Spread a 2-3 inch layer of crushed stone and gravel as a base. This base layer provides a stable foundation for the DG and helps with drainage.

It also prevents the DG from mixing with the underlying soil, which can lead to instability.

2. Compact the Base

Additionally, use a plate compactor to compact the base layer. Compaction is essential for creating a solid foundation. Ensure the base layer is firmly packed to support the DG.

Applying Landscape Fabric

1. Roll Out the Fabric

To prevent weeds, lay landscape fabric over the base layer. The fabric should cover the entire pathway area, with the edges overlapping slightly to ensure complete coverage.

2. Secure the Fabric

Use landscape staples to secure the fabric in place. Place the staples regularly along the edges and in the center to keep the fabric from shifting.

Adding Decomposed Granite

1. Spread the DG

Pour the decomposed deconstructed granite over the fabric to a depth of 3-4 inches.

Start at one end of the pathway and work your way to the other, spreading the DG evenly with a rake.

2. Level the DG

Use a rake to evenly spread and level the DG. Ensure the surface is smooth and consistent, with no high or low spots.

Compacting the DG

1. Moisten the DG

Lightly spray the DG with water to aid in compaction. Moistening the DG helps bind the particles together and makes compaction more effective.

Avoid soaking the DG, as too much water can make it difficult to compact.

2. Compact the Surface

Moreover, use a plate compactor to compact the DG firmly. Make several passes over the entire surface to ensure the DG is tightly packed and stable.

Applying a Stabilizer

1. Mix Stabilizer with DG

If using a stabilizer, mix it with the DG according to the manufacturer's instructions.

The Decomposed granite Stabilizer helps bind the DG particles together, creating a more durable and stable surface.

2. Apply the Mixture

Spread the stabilized DG and compact it again. Ensure the mixture is evenly distributed and thoroughly compacted for the best results.

Final Touches

1. Inspect the Pathway

Check for any uneven areas and level them if necessary. A final inspection ensures that your pathway is smooth and consistent.

2. Add More DG

If needed, add another layer of DG and compact it. This final layer provides a polished finish and ensures the pathway is at the desired height.

Maintaining Your Decomposed Granite Pathway

1. Regular Compaction

Re-compact the DG periodically to maintain its firmness. However, over time, foot traffic and weather can cause the DG to loosen.

Regular compaction keeps the surface stable and prevents shifting.

2. Weed Control

Remove any weeds that may appear on the surface.

Despite the landscape fabric, some weeds may find their way through.

Prompt removal keeps your pathway looking clean and tidy.

3. Filling Depressions

Add more DG to any low spots and compact it. Regularly inspect the pathway for any depressions or uneven areas and address them promptly to maintain a smooth surface.

Additional Considerations

1. Climate

In wetter climates, consider using a stabilizer to prevent erosion.

Stabilizers help bind the DG particles, making the surface more resistant to water and weather conditions.

2. Traffic 

Pathways with heavy foot traffic may require a thicker layer of DG.

Increasing the depth of the DG layer can help withstand the additional wear and tear.

3. Aesthetics

Choose DG in a color and texture that complements your landscape design.

DG comes in various shades and textures, allowing you to match your pathway to the overall look and feel of your outdoor space.

How to Harden Decomposed Granite

Hardened decomposed granite can be achieved by using a stabilizer, which helps to bind the particles together, making the surface more durable and resistant to weather conditions.

Here's how to harden decomposed granite:

1. Choose a Stabilizer 

Select a suitable stabilizer for your project. Different stabilizers offer varying levels of durability and performance, so choose one that meets your needs.

2. Mix with DG

Combine the Stabilizer with the decomposed granite according to the manufacturer's instructions. Ensure the mixture is thoroughly blended for the best results.

3. Spread and Compact

Apply the mixture to the pathway and compact it thoroughly. Use a plate compactor to ensure the DG is tightly packed and stable.

4. Cure Time

Allow the Stabilizer to cure, which can take several days, depending on the product used.

Follow the manufacturer's guidelines for curing time to achieve the best results.

How to Install Decomposed Granite on a Slope

Installing decomposed granite on a slope requires additional steps to prevent erosion and ensure stability:

1. Excavate the Slope 

Remove soil to create a stable base. Excavating the slope ensures that the DG will have a solid foundation and helps prevent shifting and erosion.

2. Install Edging 

Use sturdy materials to retain the DG on the slope. Edging helps contain the DG and prevents it from washing away during heavy rains.

3. Lay a Base Layer

Additionally, add a layer of crushed stone or gravel. This base layer provides stability and aids in drainage.

4. Apply Landscape Fabric 

Cover the base with fabric to prevent erosion. The fabric helps keep the DG in place and prevents it from mixing with the soil.

5. Add DG

Spread the decomposed granite and compact it. Ensure the DG is evenly distributed and tightly packed to prevent shifting.

6. Use a Stabilizer 

Mix a stabilizer with the DG for added durability. The Stabilizer helps bind the particles together, making the surface more erosion-resistant.

How to Install Decomposed Granite Driveway

Creating a decomposed granite driveway involves similar steps to installing a pathway but requires a more robust base due to vehicle traffic:

1. Mark the Driveway Area

Outline the driveway with stakes and string. This initial step helps you visualize the driveway's shape and ensures you work within the desired boundaries.

2. Excavate the Soil

Remove soil to a depth of 8-10 inches. A deeper excavation is necessary to support the weight of vehicles and provide a stable foundation.

3. Install Edging

Place steel or plastic edging around the driveway. Edging helps contain the DG and gives the driveway a clean, finished look.

4. Add a Base Layer

Spread a 4-6-inch crushed stone or gravel layer. This base layer provides stability and aids in drainage.

5. Compact the Base

Additionally, use a plate compactor to compact the base layer. Compaction is crucial for creating a solid foundation that can support the weight of vehicles.

6. Apply Landscape Fabric

Lay fabric over the base. The fabric acts as a barrier between the base and the DG, preventing weeds and maintaining the driveway's stability.

7. Add DG

Pour decomposed granite over the fabric to a 4-6 inches depth. Ensure the DG is evenly distributed and level.

8. Compact the DG

Moisten and compact the DG thoroughly. Use a plate compactor to ensure the DG is tightly packed and stable.

9. Apply Stabilizer

Mix and apply a stabilizer for added strength. The Stabilizer helps bind the DG particles together, making the surface more durable and resistant to vehicle traffic.

How to Install Decomposed Granite Between Pavers

Using decomposed granite between pavers can create a seamless and stable surface:

Prepare the Area: Remove soil and level the ground. Ensure the base is stable and free of debris.

1. Lay Pavers 

Place the pavers in the desired pattern. Ensure the pavers are level and spaced evenly.

2. Spread DG 

Fill the gaps between pavers with decomposed granite. Use a trowel or broom to spread the DG evenly.

3. Compact and Stabilize

Compact the DG and apply a stabilizer if needed. Ensure the DG is tightly packed and stable.

Decomposed Granite Installation Cost

The cost of installing decomposed granite varies depending on factors such as the size of the area, the depth of the DG layer, and whether a stabilizer is used.

Moreover, an average, the cost ranges from $1 to $4 / square foot for the materials, with additional costs for labor and equipment. Here's a breakdown of potential costs:

1. Materials

DG is typically priced per ton or cubic yard. However, prices can range from $30 to $50 per ton, depending on the color and quality.

2. Stabilizer

If you use a stabilizer, you'll pay an additional $0.50 to $1.50 per square foot.

3. Labor

If hiring professionals, labor costs can range from $2 to $5 / square foot, depending on the complexity of the installation.

4. Equipment Rental

Renting equipment like a plate compactor can add to the cost. Expect to pay around $50 to $100 daily for rental fees.

How Long Does It Take for Decomposed Granite to Harden?

The hardening time for decomposed granite depends on factors like weather conditions and the use of a stabilizer.

Moreover, it takes 24 to 72 hours for the DG to harden sufficiently after compaction and stabilizer application.

However, it's important to allow additional time for curing, especially in areas with heavy foot or vehicle traffic. Here are some tips for ensuring proper hardening:

1. Moisture

Lightly water the DG during and after installation to aid in compaction and hardening.

Curing: Allow the Stabilizer to cure according to the manufacturer's instructions. This can take several days to a week.

2. Maintenance

Avoid heavy traffic on the pathway or driveway until the DG fully hardens. This helps prevent shifting and ensures a stable surface.

Conclusion

Installing a decomposed granite pathway is a cost-effective and attractive way to enhance outdoor space. With its natural look, ease of installation, and low maintenance requirements, decomposed granite is an excellent choice for pathways, driveways, patios, and more.

Furthermore, following the step-by-step guide, you can create a durable and beautiful path that complements your landscape.

However, gather the necessary tools and materials, prepare the site correctly, and maintain the pathway regularly to ensure its longevity.

Whether you're a seasoned DIY enthusiast or a novice landscaper, this guide will help you achieve professional results with your decomposed granite installation.