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The process of creating acid stained concrete is easy to explain but difficult to control. A trained expert first applies a water-soluble acid solution to the surface of the concrete. It will penetrate down to 1/4 inch (6 mm). In this depth, a mineral called lime, or calcium hydroxide, lays dormant as part of the materials that always make up concrete. When the stainer introduces a mixture of special metallic salts, they flow through the porous surface and change the lime through a chemical reaction.



Stamped & Stained Concrete by Hardcore
Stamped & Stained Concrete by Hardcore Concrete Construction

Acid stained concrete gives color and texture to adaptable aggregate material. Benches, floors, walls, walkways, and countertops can all be colored using chemical stains to create warm earth tones with an organic appearance. Acid penetrates the surface of the concrete, triggering reactions that create colors.

Modern design has embraced concrete as a durable, minimalist, and flexible material. Developers and designers now routinely incorporate cement into homes in bathroom and kitchen counters, floors, patios, decks, and short, exterior walls. Bored with the plain gray color, they came up with a multi-step process to stain new or established concrete a wide range of rich colors using acid and salts.

The stages of staining depend on many uncontrollable circumstances, such as the aggregate material in the cement, types of acid and salts, amount of water, temperature and humidity, age of old cement, and the method of sealing and buffing. This organic evolution and unpredictable outcome is part of the appeal of acid stained concrete to many installers and consumers.
Versatile textures, such as veining and mottling, will become apparent when you seal the concrete with wax. Just like old-fashioned waxes on hardwood floors, the wax will be machine-buffed until it shines. The surface might look subtly translucent, or resemble terra cotta, granite, limestone, or marble.

Over the next few hours, as the mixture cures, the color will emerge. Eventually that shade will settle as a permanent addition to the chemistry of the concrete. However, the color may evolve and age for up to a month. The resultant colors are usually in the family of brown, green, and tan.

Our
Hardcore Concrete Construction team are experts in stamped and acid stained concrete. We have experimented to create certain textural effects by interfering with the acid by wiping, blotting, splotching, or saturating. Call us today for your free estimate!

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