Decomposed Granite Patio: A Complete Guide for Homeowners

A decomposed granite patio gives you the natural, earthy look of a rustic courtyard at a fraction of the cost of pavers or poured concrete. Often called DG, decomposed granite is simply granite that has weathered down into a mix of small gravel and fine, sandy particles. Compacted properly, it forms a firm, permeable surface that drains well, blends into the landscape, and feels right at home in xeriscaped yards, garden paths, and casual outdoor living areas.

Part of our Countertops guide — explore the full guide →

The catch is that a DG patio lives or dies by its base preparation. Skip the prep and you will be raking ruts and washouts every season. Do it right and you will have a handsome, low-maintenance surface for years. Here is how to do it right.

What Decomposed Granite Is and Which Type to Use

DG comes in a few grades. Loose DG is the cheapest and most natural-looking but tracks onto shoes and shifts underfoot. Stabilized DG mixes the granite with a binder, usually an organic stabilizer, then compacts into a firmer surface that resists tracking. Resin-coated or polymer-stabilized DG creates the hardest, most paver-like finish and sheds water well, making it the best choice for a true patio you will furnish and walk on daily.

For a patio with chairs and a table, stabilized or resin-coated DG is worth the extra cost. Loose DG is better reserved for informal garden paths and dog runs.

Planning and Drainage

Before you order material, plan for water. A patio should slope away from your house and any structures at roughly 1 to 2 percent, about a quarter inch of drop per foot, so rainwater runs off instead of pooling and eroding the surface. Identify low spots and plan to fill them during base prep. If your yard collects runoff, consider a French drain or a gravel trench at the downhill edge to carry water away.

Step-by-Step Installation

Building a solid DG patio follows a clear sequence:

1. Excavate. Dig out 4 to 6 inches of soil across the patio footprint, removing all grass, roots, and organic material.
2. Install edging. Set steel, paver, stone, or bender-board edging around the perimeter to contain the DG and keep clean lines.
3. Lay a base. Add and compact a 2 to 3 inch layer of crushed gravel road base for drainage and stability. Many installers add landscape fabric below this to block weeds.
4. Spread the DG. Add the decomposed granite in 1 to 2 inch lifts, raking it level and maintaining your drainage slope.
5. Moisten and compact. Lightly mist each lift, then compact with a plate compactor or hand tamper. Moisture helps the fines lock together.
6. Finish. Build to a final compacted depth of about 3 to 4 inches of DG, with a smooth, slightly crowned surface.

Stabilizers and Sealing

If you chose stabilized DG, you can either buy it pre-blended or mix a powdered stabilizer in during installation per the manufacturer’s rate. A topical resin or polymer coating, applied after compaction and curing, locks the surface even harder and dramatically reduces tracking and dust. Plan to reapply topical stabilizers periodically, since sun and traffic wear them down over the years.

Cost of a Decomposed Granite Patio

DG is one of the most budget-friendly hardscape surfaces. Loose decomposed granite material often runs $40 to $90 per cubic yard delivered, while bagged stabilized DG costs more per volume. Installed, expect a DIY patio to land somewhere around $1 to $3 per square foot for loose DG and $4 to $7 per square foot for stabilized, with professional installation adding labor on top. By comparison, paver and concrete patios commonly run several times that, which is a big part of DG’s appeal.

Maintenance and Care

A well-built DG patio is low-maintenance, not no-maintenance. Plan on a few simple tasks:

• Rake high spots back into low spots once or twice a year to keep the surface even.
• Add a thin top-up layer of DG every couple of years as fines wash or wear away.
• Pull the occasional weed that finds a seam, and refresh landscape fabric edges if needed.
• Reapply topical stabilizer on a schedule if you used one, to control dust and firmness.

Edging Options That Hold the Shape

Edging is not optional on a DG patio; without it, the material spreads and thins at the edges until the shape disappears. You have several good choices. Steel or aluminum landscape edging gives crisp, modern lines and disappears visually. Paver or brick borders add a finished, decorative frame and make excellent transitions to lawn or planting beds. Natural stone or cut flagstone borders suit a rustic look. Pressure-treated bender board is the budget option and bends nicely around curves. Whatever you choose, set the edging firmly so it resists the outward pressure of the compacted DG over time.

Combining DG With Pavers or Steppers

One of the most attractive uses of decomposed granite is as the field around larger paving elements. Setting flagstone, concrete steppers, or pavers into a DG base gives you firm, level footing for furniture and foot traffic while the DG fills the joints with that warm, natural texture. This hybrid approach also reduces the surface area of loose material, cutting down on tracking and washout. If you want the look of a stone patio with the budget and permeability of DG, this combination is often the best of both worlds.

Pros and Cons at a Glance

Weighing the trade-offs helps you decide with eyes open:

• Pro: low cost compared with pavers, stone, or poured concrete.
• Pro: permeable, letting rainwater soak in rather than running off.
• Pro: natural look that blends into gardens and drought-tolerant landscapes.
• Pro: DIY-friendly with basic tools and a rented plate compactor.
• Con: seasonal upkeep, including raking and occasional top-ups.
• Con: can track indoors as fines cling to shoes, especially with loose DG.
• Con: less stable for heavy furniture, wheelchairs, and rolling carts than a hard surface.

Is a DG Patio Right for You?

Choose a decomposed granite patio if you want a natural, permeable, budget-conscious surface and you do not mind a little seasonal upkeep. It is a fantastic fit for garden-style yards, drought-tolerant landscapes, and casual seating areas. If you need a hard, formal, zero-maintenance surface for heavy furniture, wheelchairs, or rolling carts, pavers or concrete may serve you better. For most homeowners chasing relaxed outdoor charm on a budget, though, a properly built DG patio is hard to beat.