Acid Etching Concrete Countertops

An acid either citric acid from fruit or acetic acid from vinegar based foods reacts with the cement paste and any calcium based aggregate gradually dissolving the materials and leaving a rough depression and a light colored appearance. Preparing to etch 1. The profiler prepares troweled concrete surfaces for painting or other finishing by giving them a slight tooth.

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Put on goggles and gloves.

Acid etching concrete countertops.

Acid stain won t coat evenly if the counter is dirty. Before you start your etching you ll want to make sure you have. Tape it securely with painter s tape. Acid etching is the process of neutralizing a concrete surface through the use of muriatic or phosphoric acid.

Remove all oils and greases prior to etching this can be done by using a degreaser laundry detergent or dawn concentrated dish soap. This has been the standard method for preparing the concrete slab for a coating or overlay. Cover your cabinets floor wall and sink with plastic. Grab muriatic acid or another suitable etching acid.

How to acid stain concrete countertops. Yes you can acid stain any concrete countertop as long as the concrete has not have been treated with any waterproofing agent cleaned with muriatic acid or a heavy trisodium phosphate tsp solution. Clear the concrete of any obstructions. Instead they are etching where the acid dissolved the cement paste and left white carbonate deposits.

The acid is applied on the concrete and then rinsed off with water. Allow the countertop to dry completely wiping with the towel. This can range from csp 1 smoothest to csp 9 roughest. The acid stain will not take on concrete that has been treated with these products.

Use degreaser for oil or. Unlike stains etching is physical damage to the surface. Acid stain is not necessary as the necessary acid etch is provided by the gel. To begin remove any any all furniture vehicles and other obstructions from.

The stenciled area can be left uncolored as in this example or colored with an acrylic stain. If the stain is deeper than the surface you might want to call in a professional once the acid etching and stain has been sanded away wipe away any dust with a damp cloth. Next use the fine grit sandpaper to gently sand the area affected by the acid. Acid etching concrete creates only a minimal profile concrete surface profile or csp as defined by the international concrete repair institute icri is a standardized measure for the roughness of a given concrete surface.

Remove all furniture equipment and objects from the concrete floor you are going to be etching sweep up or shop vacuum any dust and dirt. Clean your countertops thoroughly with water removing any dirt or residue.