Integral Color vs Acid Stain: How to Color Concrete

Integral Color vs Acid Stain: Complete Guide to Coloring Concrete

Coloring concrete can be done two ways: integral color (mixed into the concrete) or acid stain (applied to the surface). Each method creates a completely different look and has different advantages. Understanding both helps you choose the right method for your project.

Integral Color: Mixed in the Truck

Integral color is added to the concrete mix before placement.

How It Works

• Pigment added to mix: Color is mixed into concrete during batching
• Consistent throughout: Color goes all the way through the slab
• Permanent: Color is part of the concrete, not a surface treatment

Application Process

1. Specify color when ordering concrete
2. Supplier adds pigment during batching
3. Concrete arrives pre-colored
4. Place and finish normally

Advantages

• Consistent color: Same color throughout entire depth
• Won't wear off: Color is permanent, can't be removed
• Scratches don't show: Damage doesn't reveal different color
• Uniform appearance: Even, consistent look

Disadvantages

• Less variation: Uniform color (some consider this less interesting)
• Limited to available colors: Fewer color options than stain
• Must decide before pour: Can't change after placement

Acid Stain: Surface Reaction

Acid stain is applied to cured concrete and creates a chemical reaction.

How It Works

• Applied to surface: Stained after concrete has cured
• Chemical reaction: Acid reacts with minerals in concrete
• Creates color: Reaction produces permanent color compounds
• Surface only: Color is in the top layer, not throughout

Application Process

1. Concrete must be fully cured (28 days minimum)
2. Clean surface thoroughly
3. Apply acid stain according to directions
4. Let react (typically 2-4 hours)
5. Neutralize the acid
6. Clean and seal

Advantages

• Variegated, marble look: Natural variation and mottling
• Unique appearance: Each application is one-of-a-kind
• Can be applied later: Can stain existing concrete
• More color options: Many colors available

Disadvantages

• Surface only: Color is in top layer
• Can wear: Surface damage may reveal unstained concrete
• More complex: Requires proper application and neutralization
• Must seal: Requires sealing to protect color

Key Differences

Color Consistency

Integral: Uniform, consistent color throughout

Acid Stain: Variegated, mottled, marble-like appearance

When Applied

Integral: Before placement (during batching)

Acid Stain: After curing (applied to surface)

Color Depth

Integral: Color throughout entire slab

Acid Stain: Color in surface layer only

Appearance

Integral: Even, uniform color

Acid Stain: Natural variation, unique patterns

Which to Choose

Choose Integral Color If:

• You want uniform, consistent color
• You're doing new construction
• You want color that won't wear
• You prefer even appearance

Choose Acid Stain If:

• You want variegated, marble-like appearance
• You're working with existing concrete
• You want unique, one-of-a-kind look
• You prefer natural variation

The Bottom Line

Integral color is mixed in the truck, creating consistent color throughout the entire slab. Acid stain is applied to the surface after curing, creating a variegated, marble-like look through chemical reaction. Integral provides uniform color that won't wear. Acid stain provides unique, natural variation. Choose based on your desired appearance and whether you're working with new or existing concrete.

Both methods create permanent color, but with very different appearances. Consider your aesthetic goals and project type when choosing.

Need help choosing the right coloring method? Contact Local Concrete Contractor. We can help you select the best approach for your project and desired appearance.