Tips for Cleaning a Concrete Slab Before Applying Concrete Acid Stains

If you are looking for an economical and unique way to upgrade your concrete flooring or simply want to give your space a little added color, concrete acid stains may be the way to go. Replacing a concrete slab can be prohibitively expensive, but revamping it is not. If you plan to apply a stain, however, you will first need to clean and prepare the concrete to ensure adhesion.

Cleaning a concrete slab for acid stain

Cleaning a concrete slab for acid stain

Cleaning Concrete for Concrete Acid Stains

Whether you are a DIY homeowner or a concrete contractor, you need to follow the proper steps to clean and prepare a concrete slab before applying your acid stain. If you do not prepare the slab, the stain will not take properly and you could be left with uneven color or no color at all. Before you start preparing the slab for an acid stain application, take note that you must not use any kind of acid wash or acid-etching solution – if you do, the concrete acid stain will not take at all and you will have done all that work for nothing.

One product that is used in the industry a lot to clean an older concrete slab is a trisodium phosphate (TSP) solution. Apply the solution to the concrete slab and then use a long-handled scrub brush or rotary floor machine with a nylo-grit scrub pad to work it into the concrete.  Any heavy mastics can be removed by scraping with a putty knife or applying a poultice solution made of fly-ash and denatured alcohol, and grease stains may be treated with chemical strippers, or degreasers. Give the entire floor a final rinse to ensure removal of any residue.   Keep in mind that even if you do thoroughly clean the entire slab, you might be left with patches that have lower lime content – those patches might not take the stain, so you’ll have to apply a faux finish to match the concrete stain on the rest of the slab.  It is always best to test a small area first before applying the solutions to the entire floor.  Always read labels and follow directions for the products you are using.

Once you have thoroughly cleaned your older concrete slab, you can apply the concrete stain of your choice. For high-quality concrete stains that add depth, richness, and color to your concrete flooring, make The Stamp Store your first stop.

 

 

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