Harmony Acid Stain
- Coloration par réaction chimique du béton
- Nuances marbrées uniques
- Intérieur et extérieur
Add a touch of sophistication and depth to your surfaces with Acid Stain, the perfect acidification product for achieving marble-like effects and unique shades.
Ideal for outdoor spaces, this product delivers stunning decorative finishes that command attention.
The acid reacts with the concrete, penetrating deeply to create rich, vibrant hues resembling natural mineral colors. It remains stable over time and resists sunlight for years.
In stockProduct shipped in 48h
Packaging
Color
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Free delivery on polished concrete kits of 10m² or more

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Payment in 2 or 3 installments available
for metropolitan France -
Customer service available 5 days a week

to support you with your project -
Quality product made in France
Description
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Acid Stain
Add a touch of sophistication and depth to your surfaces with Acid Stain, the perfect acidification product for achieving marble-like effects and unique shades.
Ideal for outdoor spaces, this product delivers stunning decorative finishes that command attention.
The acid reacts with the concrete, penetrating deeply to create rich, vibrant hues resembling natural mineral colors. It remains stable over time and resists sunlight for years.
Why Choose Acid Stain?
- • Exceptional Marble Effects: Its reactive formula deeply penetrates the concrete to produce natural and organic variations.
- • Customization and Uniqueness: Each application yields a one-of-a-kind effect, perfect for those seeking originality.
- • Enhanced Durability: Engineered to withstand weather and wear over time.
- • Versatility: Suitable for all clean, dry Portland cement-based surfaces (concrete, screeds, certain self-leveling compounds, etc.).
- • Dilutable: Acid stains can be diluted and combined to create a wide range of colors and shades, enhancing your concrete surfaces.
Application
- Ensure the surface is clean and dry.
- Apply the acid stain using a sprayer or brush, distributing it evenly while allowing the product to react for the desired shade.
- A second coat can be applied without rinsing the first. Apply it in the opposite direction for uniform coverage.
- Neutralize the acid using a neutralizing agent, then rinse thoroughly.
- Seal the surface with an appropriate sealer to protect and enhance the effect.
For detailed technical information about the product and its application, download the technical sheet in the “Product Notices” section below.
Advice
- Test the product on a small area to ensure compatibility with your screed or slab. A sample kit is available for this purpose.
- Protect non-target areas with plastic sheeting and wear shoe covers to prevent footprints.
- Use a varnish or wax to enhance the effect and provide long-lasting protection.
Characteristics
- • Type: Acid-based concrete colorants
- • Colors: 8
- • pH: 0.5–1
- • Odor: Pungent
- • Coverage: 1 liter = 8–10 m² undiluted, depending on surface porosity
- • Shelf Life: 12 months in its original unopened packaging, stored in a dry, frost-free environment
Payment
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Pay in 4 installments at no extra costPay in 3 or 4 installments using your bank card (Carte Bleue, Visa, or MasterCard). This 3 or 4-installment payment option is available for any order totaling more than €100, up to a limit of €2,000. Currently, the Alma payment solution is available exclusively to customers holding a bank card issued in France. | |
Pay in 4 installments at no extra costExclusively for individuals residing in France (a French PayPal account is required). PayPal "Pay in 4" is available subject to approval for purchases between €30 and €2,000. A 14-day withdrawal period applies. |
Delivery
- Product shipped in 72h upon receipt of payment. Delivery within 2 to 5 days, depending on the size and weight of the package.
- Delivery to the following countries
France, Belgium, Luxembourg, Germany, Austria, and Poland. - For Corsica, the French overseas territories (DOM-TOM), or other destinations in Europe, please contact us so that we can provide a shipping quote. Contact us
Contact us
You can contact us
- Via chat: bottom right
- By phone: 04 42 20 10 09
Monday to Friday, 8:00 AM – 6:00 PM - By email: at contact@harmony-beton.com
Do you have everything you need for your project?
Polished concrete kits contain the essentials for carrying out your project. Depending on the surface, the room, and the intended use, certain tools or maintenance products may also be helpful to ensure you can complete the job with ease.
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Available 5 days a week

Pay in up to 3 interest-free installments on purchases of €300 or more

Responses within 48 business hours

For the purchase of a concrete kit covering 10m² or more