Usually when you're planning on going over it with additional concrete or cement, or in preparation for an epoxy or waterproofing coating.
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Yes, concrete contractors do need a license, which would be a contracting license. You should always ask them for their license before they begins the job, so they have less of a chance of scamming you.
metal ones
in between existing concrete and the new concrete you need to place an expansion joint in between the two.
You'll need a special saw with a diamond blade.
paint or acid etch
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To etch concrete for a decorative finish, you can use a combination of acid etching and staining techniques. First, clean the concrete surface thoroughly and apply an acid etching solution to create a rough texture. Then, apply a concrete stain or dye to add color and depth to the etched surface. Finally, seal the concrete with a protective coating to enhance durability and longevity.
To effectively etch a concrete floor for a new finish, you can use a concrete etching solution or a mixture of water and muriatic acid. Apply the solution to the floor, scrub it in with a stiff brush, and then rinse thoroughly. This process will help remove any dirt, grease, or other contaminants from the concrete surface, allowing the new finish to adhere better. Be sure to follow all safety precautions when working with acid-based solutions.
To apply concrete etch to a surface, first clean the surface thoroughly. Mix the etching solution with water according to the instructions. Apply the solution evenly using a sprayer or brush. Let it sit for the recommended time, then rinse it off with water. Finally, neutralize the surface with a baking soda solution and rinse again.
Alkaline cleaners are generally more effective and safer for cleaning concrete than acid cleaners. Acidic cleaners can etch and damage the surface of the concrete if not used properly. Alkaline cleaners are better at breaking down oils and grease commonly found on concrete surfaces.
If the water's chemistry is not correctly balanced, it can. For example, if your pH is too low, the water can etch cement you'd materials.
'Etch' , who cannot speak but communicates through his screen , is an "Etch-A-Sketch" toy with a magic screen .
No, Armour Etch should not be used on acrylic surfaces as it can damage or etch the material.
No, stomach acid (hydrochloric acid) is not the same as the acid used to etch concrete (usually muriatic acid, which is also known as hydrochloric acid). The concentrations and purposes of these acids are different, with stomach acid being naturally produced in the human body for digestion and muriatic acid being a strong chemical used for industrial purposes.
To refinish concrete floors effectively, follow these steps: Clean the surface thoroughly to remove dirt and debris. Repair any cracks or damage with a concrete patching compound. Etch the surface with an acid solution to promote adhesion. Apply a concrete sealer or stain to achieve the desired finish. Allow the floor to dry completely before using it.
A window etch kit would include acid, a corrosive material, to etch the glass.