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The acid needs to be able to touch every part of the concrete's surface to react properly with it. Dampen the concrete: Use your hose to lightly spray down the concrete in your garage so that the concrete is wet but not puddling water. If you have a large floor, you may want to acid etch in sections. Do not let the concrete dry out before or during application of the acid solution. wikiHow is a wiki, similar to Wikipedia, which means that many of our articles are co-written by multiple authors. Acid etch procedure MUST be followed exactly as specified below for proper installation. Once it's etched it remains good for a long time provided you don't clog the pores up somehow eg by spraying it with water seal or painting it or perhaps just by getting it dirty. Since these products are capable of etching galvanized metal, do not use agalvanized container to mix or hold while applying. DRYLOKs Etch &Cleaner is apowdered mixture that also cleans up with water and only requires one application to properly etch asurface. Be sure that you have washed away all traces of the oil, grease and degreaser. (Follow manufacturer's instructions), Rinse with warm water (ideally) or with a pressure washer, Mix Apply a neutralizing solution over the concrete. Last Updated: October 21, 2021 The etcher should begin to bubble and react as soon as you apply it. Sign up for wikiHow's weekly email newsletter. However, etching (or washing) concrete with acid opens the pores of the concrete and prepares the surface to accept its next treatment. Clean the concrete with adegreaser to remove oil or grease. This can leave some of the etching solution used up before it reaches the rest of the surface. Allow the etching solution to remain on the concrete until the foaming stops. ", http://allgaragefloors.com/acid-etch-garage-floor/, http://www.thisoldhouse.com/toh/how-to/intro/0,,20174654,00.html, http://www.houzz.com/ideabooks/5149721/list/acid-etched-concrete. Check the surface of the concrete at this time. It should feel similar to medium grit sand paper with a uniform texture. If not, you will need to repeat the process again. wikiHow is where trusted research and expert knowledge come together. Apply the acid etching solution over the concrete and agitate using a push broom until foaming action stops. Call Our Experts Etching is acrucial step that must be done to prepare concrete for painting. If you don't immediately see bubbles, your mixture probably isn't strong enough. Prepare the area you plan to etch by removing any furniture or other obstructions. To remove as much oil and grease as possible, scrub your concrete with acommercial degreaser. Remember to particularly heed the advice on handling acids. If theres no foaming action, that means there is asealer on the concrete preventing the etcher from penetrating. Well done, thank you! How Much Does Basement Waterproofing Cost? Etching is adeep cleaning process that maximizes the bond between paint or protective sealants and the surface of the concrete. Note the grainy pits in the surface of this kitchen floor. Read more to learn how to stain or paint the concrete after its been etched. The floor needs to stay wet the entire time you are acid etching. Acid is generally mixed at a ratio of 3 parts water to 1 part acid for sufficient strength to etch properly. The etching solution is effective at cleaning, but it will be more effective and provide you with amore evenly etched surface if the surface is as clean as possible tostart. and I could not add, "The all of article is of value to me as I might have made some errors especially on the safety side of things. For a general, all-purpose acid neutralizer, try mixing 1 cup of baking soda in 1 gallon (3.8L) of water, then mixing until it dissolves. When the acid etch solution stops foaming you can begin rinsing. Flush away the acid etching solution with warm water (preferably). Lets look at the more detailed steps of how to etch aconcrete garage floor or how to etch abasement concrete floor using these products. If the floor was dry beforehand but the beads do not get absorbed quickly, the floor needs etching. { $refs.headerSearchInput.focus() }); Check your local regulations before doing this you don't want to break the law or hurt the environment. Once it stops bubbling, rinse the floor thoroughly and push the water out with a squeegee. The smooth surface of un-etched concrete wont bind as strongly with sealants, and as aresult, youll see your new sealant peeling and lifting away as it fails to adhere to the surface. After using an etcher on the outside, how long is it effective before using a paint coating? Do I wait days or weeks before I start the etching process when I have just laid the self leveling compound today in my garage? Sand blasting, captive ball blast or scarifying the concrete floor surface is always preferable to acid etching when ever possible. Apply it to a small area of wet concrete. Apply the etching product to the walls in the same way as described below. Acid combined with stain will etch and color the concrete at the same time. If the acid mixture does not "foam" evenly over the entire surface of concrete on which it is applied or simply "beads up" on the surface, then this is a sign that a foreign "bond breaker" is on the surface of the concrete. Copyright 2022 All rights reserved. wikiHow is a wiki, similar to Wikipedia, which means that many of our articles are co-written by multiple authors. Sprinkle your neutralizing solution over the part of the floor that was acid etched and let it sit for a minimum of 10 minutes. When time is up, rinse the neutralized solution with your hose into a drain or out the garage (if local water codes allow it). Another method is to use a wet vac and then dispose of the solution according to your local codes. Thank you! Using a pressure washer at this point works well also. Do not use a pressure washer to rinse off the initial neutralizing solution however. It can drive any acid solution that had not been neutralized yet deeper into the concrete and cause problems later. You want the acid to be reacting evenly and uniformly across the surface. If youre spraying, use asqueegee to move the solution around to ensure each part of the surface is equally coated. Both products are highly effective in etching galvanized metal, masonry, stone, tile and brick. Hose down the entire area to remove the degreaser. Inspect the surface as the acid works. 1 cup household baking soda per gallon of water, allow it to stand for at least 15 min.. Epoxy is a polymer-based adhesive or paint that has a plastic feel to it. To use the powder Etch &Cleaner, dissolve the entire 12-ounce container in 1gallon of warm water in aplastic containernever use ametal container as high volumes of product can corrode the container. Houzz Pro: One simple solution for contractors and design pros. Today, safer, eco-friendlier and more consistent etching methods are used to prepare aconcrete floor for painting. Epoxy floors are common in professional garages. Allow newly poured concrete to cure for a minimum of 28 days before etching. If the acid etch mixture is not properly mixed at a 10% solution, the solution will be to weak to properly remove concrete latencies or it may be too strong and etch the surface deeper than necessary, and soak into the concrete surface and contaminate it with a destructive, lingering, acidity after floor materials are applied. DRYLOK Etch applies with astiff brush. In this case, the sealer must be removed using asuitable sealant removal or by grinding the sealer off the surface of the concrete before pursuing acid etching. Yes. For an even safer concrete etching product use the Eco-Etch 1001: a safe, powerful, 100% biodegradable concrete cleaner with no acid, solvents or VOC's specifically formulated to clean, brighten and etch concrete without any harmful effects. If there are spots where the acid isn't reacting, this can be a sign that an unnoticed grease stain or sealant was present on the concrete. Even though these products are much safer than muriatic acid,you should still avoid contact with eyes, skin and clothing. The above-mentioned DRYLOK products do not require aneutralizing solution, but if youre using another product, be sure to follow the package directions. Just because its diluted does not mean its safe! Final rinse: Once the initial neutralizing solution is cleaned up, it is important to thoroughly flush and rinse the remaining solution out of the concrete multiple times. It can leave a white powdery residue on your floor once dried (called calcium carbonate) if you do not do this. This is a fine dust that will not allow your coating to adhere properly. Use a high pressure nozzle while thoroughly scrubbing the concrete with your scrub brush. You can introduce a mild solution of Simple Green at this point if you like. Just make sure it is thoroughly rinsed. This article received 15 testimonials and 97% of readers who voted found it helpful, earning it our reader-approved status. Mixing and Applying Neutralizing Solution: Before neutralizing, it is best to choose which neutralizing solution would be best for your application. {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/6\/6b\/Acid-Etch-Concrete-Step-1-Version-3.jpg\/v4-460px-Acid-Etch-Concrete-Step-1-Version-3.jpg","bigUrl":"\/images\/thumb\/6\/6b\/Acid-Etch-Concrete-Step-1-Version-3.jpg\/aid3719357-v4-728px-Acid-Etch-Concrete-Step-1-Version-3.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"