<p>Colour applied to concrete behaves unlike paint, because the material is porous and chemically active. Understanding the categories explains why some stains last for decades and others fade within a season.</p> <p>Concrete stains can hide surface imperfections as well as add character and beauty to any concrete surface. This technique has become a popular choice for anyone looking to elevate their space and add a touch of elegance and uniqueness.</p> <p>There are two main types of stains that contractors use to finish concrete surfaces: acid-based stains and water-based stains.</p> <p>Acid-based stains are made from a mixture of water, hydrochloric acid, and metallic salts. This mixture reacts with the minerals inthe concreteto produce the color. The acid in this mixture etches the surface of the concrete which allows the metallic salts to penetrate and form a lasting bond with the concrete. Acid-based stains offer fewer color options, typically earth tones such as browns, greens, blues, and reddish hues. Acid-based stains also require more experience to apply because their application requires more safety precautions.</p>
Concrete Staining: Types of Stain
Acid-Based Stains
Water-Based Stains
Water-based stains are non-reactive and produce color through pigment rather than a reaction with the surface material. Water-based stains penetrate the concrete surface and bond with it through absorption. This process produces a more consistent color appearance. Water-based stains are available in a wide range of colors with varying intensity. Contractors can mix, layer, and blend them to create custom colors. Many people prefer water-based stains to acid-based stains because of their ease of application, quick-drying time, and low odor.
Concrete Staining: Sealer Types
A sealer is a top coat that protects, preserves, and enhances the color of the concrete. There are three main types of sealers and each has different properties.
Acrylic-Based Sealers
Acrylic-based sealers are created using both water-based and synthetic resins. This sealer creates a protective barrier against stains, moisture, and wear. This kind of sealant is easy to apply and quick drying, so it is ideal for DIYers. These are the least expensive type of concrete sealers.
Polyurethane Sealers
Polyurethane sealers come in both water-based and solvent-based formulas. These both create a thick and protective glossy coat that gives the concrete surface excellent resistance to wear and tear. Polyurethane sealers are slightly more expensive than acrylic sealers but less expensive than epoxy sealers.
Epoxy Sealers
Epoxy sealers provide the thickest and most durable coating, so they are known for their durability and longevity. This sealer type requires more expertise and knowledge to achieve, but once complete, they are easy to maintain. Epoxy finishes may yellow when exposed to sunlight, so they are not recommended for outdoor use.
Concrete Staining: Steps in the Process
Staining concrete is a multi-step process. The following are key steps to consider.
Surface preparation is crucial for the success of stained concrete. The concrete surface must be clean, free from dirt, grime, grease, and any other previous coating. Depending on the condition of the concrete and the type of coating you need to remove, this could include pressure washing, scrubbing, or chemical cleaners.
Surface preparation also includes fixing any cracks, dents, or divots that need to be repaired before the stain application.
Consider the type of stain that you want to use for your concrete finish: acid or water-based. Acid-based stains offer earthy colors which produce a slightly variegated pattern due to the chemical reaction. These stains require skill and expertise to apply. Water-based stains are more plentiful. They are easier to apply and produce a vivid and consistent color.
Concrete stain colors are varied in hue and intensity. Water-based stains offer more options for color. You can also mix and layer water-based stains to produce custom colors. When you decide on a color you like, it is best to test it on a sample or in an inconspicuous area on your surface area to see if you like the way it looks once you have applied it.
You can apply the concrete stain using various techniques including spraying, brushing, or rolling. The application type you choose is dependent on the type of concrete stain you choose. Carefully review the manufacturer’s instructions before you begin this process to achieve the most optimal results.
Once the stain has been applied and allowed to fully dry, it is essential to seal the concrete to maintain it in the best condition. Sealing the concrete surface protects the color from stains, UV damage, and wear. There are different types of concrete sealers available such as acrylic sealers or epoxy coatings.
As you walk through these steps in your mind, consider how you want to accomplish this task. Think about if this is something that you want to do yourself or something that you want to entrust to a professional. Hiring a professional may be a smart move if your concrete surface needs intense preparation and repair. It also may be the best idea to hire a professional if you want to use an acid-based stain as these require specialized knowledge and expertise.
Concrete Staining: Costs
The cost of concrete staining is variable, depending on the preparation, stain type and amount, the intricacy of the design, and if you use professional help. This results in a wide cost range from between $2-$25 per square foot. On average, most people pay between $3-$14 per square foot with an average of $8.50 per square foot. These prices include the costs of materials and labor.
You can save money on concrete staining by doing the job yourself and using just one color, a water-based stain, and an acrylic rather than an epoxy sealer.
Concrete Staining: Benefits and Drawbacks
Concrete staining is a popular concrete finishing technique that has numerous advantages. Consider these points to decide if this technique is right for your project.
