How to Install a Decomposed Granite Pathway

The five steps to a DG path that stays flat and firm, sourced depths for paths and patios, and the drainage details that matter in High Desert storms.

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4.8 Stars / 114 Reviews CSLB #957605 Since 2009

Reviewed by Freddie Ruiz, Owner and CSLB-licensed contractor License C-27 #957605 Building landscapes in the High Desert since 2009 Last updated October 1, 2026

To build a decomposed granite pathway, dig out about 6 inches, compact 3 inches of crushed road base, set edging on both sides, then lay about 3 inches of DG in thin lifts that you water and compact one at a time. For a firmer surface, use stabilized DG for that top layer. Most failed DG paths skip the base or the edging, or let water sit on them.

The general order is excavate, fabric, edging, spread, compact (Landscaping Network). The depths below come from the Stabilizer Solutions pedestrian installation guide (Stabilizer Solutions), which is the most specific published spec we found. This page is part of our landscape rock and decomposed granite guide.

Tools and Materials

Tools

Marking paint or string line and stakes
Flat shovel and pick or mattock
Wheelbarrow
Steel rake
Hand tamper
Plate compactor or lawn roller
Garden hose with a spray nozzle
Level and a long straight board

Materials

Crushed road base (Class II base rock)
Decomposed granite
Edging (steel, concrete or pavers)
Landscape fabric (optional)
DG stabilizer (optional)

For a stabilized mix, the Stabilizer Solutions guide calls for a roller, not a vibratory plate (Stabilizer Solutions). Locally, Majestic Rock & Material in Norco stocks Class II base rock (3/4 inch minus) and crushed granite / DG (3/8 inch minus) in gold and gray tones.

To figure how much base and DG to order, use the landscape rock and DG calculator. DG runs about 1.3 to 1.5 tons per cubic yard (Earth Stone Rock), and Yard Compass suggests ordering 5 to 10% extra for compaction and an uneven subgrade (Yard Compass).

The Five Steps

Step 1: Lay out and excavate. Mark the edges of the path with paint or a string line. Dig out enough depth for the base and the DG together, about 6 inches below finished grade for a 3 inch base under 3 inches of DG. Shape the bottom so water runs off to the side and nothing can pool next to the path.
Step 2: Put down the base and compact it. If you are using landscape fabric, lay it on the dug-out subgrade first. Spread crushed road base 3 inches deep, wet it, and compact it hard. Thicker base goes in lifts of about 2 inches, because compacting 4 inches at once leaves the bottom loose.
Step 3: Set the edging. Install steel, concrete or paver edging along both sides so the DG has something to pack against. Set the top of the edging at the finished height of the path and stake or set it firmly so it does not lean out under compaction.
Step 4: Place the DG in lifts, water and compact. Spread the DG, rake it level, wet it, and compact it. If the finished layer will be thicker than 3 inches, place it in 2 inch lifts and compact each one before adding the next. Finish with a light crown or a slight tilt to one side so rain runs off the surface instead of sitting on it.
Step 5: Stabilize it (optional). For a firmer path, use stabilized DG for the whole DG layer rather than a thin coat on top. Follow the binder maker’s guide for blend rate, water and compaction, and do not install in rain or cold.

Where the numbers come from: the 3 inch base and 3 inch DG depth are the light-traffic figures in the Stabilizer Solutions guide, which also calls for the base to be pre-soaked and compacted to 95% and for anything over 3 inches to go in 2 inch lifts (Stabilizer Solutions). The note about compacting base in roughly 2 inch lifts comes from a secondary how-to source (HomeBuddy). The fabric and edging steps follow Landscaping Network’s install order (Landscaping Network).

Step 5 in Detail: Stabilized DG

A lot of people picture “stabilizer” as a coating you spray on top. The Stabilizer Solutions guide treats it as the whole DG layer: binder blended dry into the DG at 12 to 15 pounds per ton, spread 3 inches deep after compaction, watered with 25 to 45 gallons per ton through the full depth, then rolled after a 6 to 48 hour wait. It also says not to install in rain or below 40°F and falling (Stabilizer Solutions).

Those are that one manufacturer’s specs for its organic powder. Polymer and resin binders work differently. The full breakdown is in our stabilized decomposed granite guide.

Depth Chart: Path, Patio, Light Driveway

We only list depths a published spec supports. The Stabilizer Solutions guide is written for pedestrian surfaces, so it does not cover vehicles.

Use	Compacted base	DG layer (after compaction)	Source
Garden path, light foot traffic	3 inches crushed road base	3 inches	Stabilizer Solutions
Patio or busy path, high foot traffic	3 inches crushed road base	4 inches, placed as two 2 inch lifts	Stabilizer Solutions
Light driveway	Ask your installer	Ask your installer	We found no published spec we trust for vehicle loads on DG

A driveway carries far more weight than a path, and soil, slope and caliche change what it needs. Get a site-specific design before you build one. If DG is just the look you want, a contractor can also talk through other driveway surfaces.

Drainage and Slope

Water is what ruins DG paths. The Stabilizer Solutions guide says no water should stand on or next to the surface, and to watch roof downspouts (Stabilizer Solutions). A few practical rules:

Give the path a slight crown or tilt so rain sheets off. Keep it gentle so the path still feels flat to walk on.
Never aim a downspout at the path. Pipe it under or around.
Do not run a DG path straight down a slope where it becomes the channel. Turn it across the slope, add steps, or use larger rock in that stretch.
Where water has to cross the path, build a rock swale or drain at that spot. That is drainage work, and it is worth doing before the DG goes in.

High Desert Notes

Monsoon runoff. Late-summer thunderstorms drop heavy rain fast on dry soil that cannot absorb it, and flash floods follow (National Park Service). Look at where water ran during the last storm before you pick the route.
Caliche. This cemented calcium carbonate layer can be a few inches to several feet thick and blocks drainage. University of Arizona Extension suggests a simple test: fill a hole with water; it should drop at least 4 inches in 4 hours (University of Arizona Extension). If you hit caliche while digging the path, read our High Desert soils guide.
Wind. April is Victorville’s windiest month, at about 9 mph average hourly wind (Weather Spark). Fine material on top of loose DG can move in strong wind, as a matter of general practice. Good compaction or a stabilized mix leaves less loose material to blow.
Sun. The hot season runs early June to mid September (Weather Spark). DG dries fast on hot afternoons, so wet each lift right before you compact it.
Freezes. Victorville’s December average low is 35°F (Weather Spark), and Phelan and Oak Hills generally run colder. For stabilized DG, wait for days that stay above the 40°F and falling cutoff (Stabilizer Solutions).

Common Mistakes

Skipping the base. DG laid on bare dirt ruts and goes soft when wet.
No edging. The DG spreads into beds and the path edges crumble.
One thick lift. The top packs and the bottom stays loose.
Plate compactor on a stabilized mix. The Stabilizer Solutions guide says vibration separates the aggregate; it calls for a roller (Stabilizer Solutions).
Path at the back door. Loose DG tracks indoors (Landscaping Network). Put a paver or concrete landing at the door.
Sprinklers on the path. Daily overspray keeps it soft. Adjust heads or switch nearby beds to drip.

For more on DG itself, see the decomposed granite guide. Stepping stones set in DG are a common pairing; our landscape rock types guide covers rock that goes with it.

When to Hire a C-27 Contractor

A short, flat garden path is a reasonable weekend project. Call a licensed landscape contractor when the path is long, on a slope, needs grading or drainage work, sits on caliche, or has to carry anything heavier than feet. Monarch holds a California C-27 landscape license (#957605). A professionally installed rockscape from Monarch runs about $3 to $6 per square foot; our cost guides explain what moves that number.

We build DG paths as part of rockscape design work. See our Victorville rockscape and Menifee rockscape pages.

DG Pathway FAQs

How deep should a decomposed granite pathway be?

For light foot traffic, the Stabilizer Solutions guide calls for 3 inches of compacted DG over 3 inches of compacted road base, so dig about 6 inches. For high foot traffic it calls for 4 inches of DG placed as two 2 inch lifts.

Do I need a base under DG?

Yes. A compacted layer of crushed road base keeps the path from rutting and going soft when wet. The Stabilizer Solutions guide calls for 3 inches, pre-soaked and compacted to 95%.

Should I put landscape fabric under a DG path?

It is optional. Landscaping Network includes fabric in its install order, laid on the subgrade before edging and DG. It separates the base from the soil below.

Can I use decomposed granite for a driveway?

We found no published spec we trust for DG under vehicles, so ask your installer for a site-specific design. The spec we used for paths is written for pedestrian surfaces only.

How do I keep a DG path from washing out?

Give it a solid base and edging, compact the DG in thin lifts, tilt the surface so water runs off, and keep downspouts and concentrated runoff away from it. A stabilized DG mix holds up better than loose DG.

Sources

We checked every number on this page against the public sources below. If a rule or date changes, the agency page is the final word.

Related Guides & Services

Landscape Rock and DG Guide Decomposed Granite Guide Stabilized Decomposed Granite Rock and DG Calculator Landscape Rock Types Rockscape Design Drainage High Desert Soils

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