When preparing the surface to be acid stained, do not use an acid wash or muratic acid to clean the surface, as this will remove the free lime needed for the acid stain reaction in the concrete.
Experienced applicators may want to sand the surface prior to staining using a floor polisher with a maximum of 50-100-grit mesh or paper. The function this will serve is to open the pores of the surface. The surface must then be cleaned thoroughly and completely dry before applying stain.
To avoid costly application errors, drop a teaspoon or less of stain onto the concrete before applying stain to an entire floor. If the stain produces a fizzing reaction, your surface is ready for staining. If not, the concrete may have been cleaned with muratic acid, machine-troweled or waterproofed during the pouring process.
Surface preparation is the most important step in the acid staining process. Prior to staining, a slab must meet the following criteria:
• The concrete must be free of debris, dirt and oils, paint, dry wall mud, adhesive, sealers, stains of any kind or similar materials. Acid stain cannot react properly with the concrete if these conditions are present.
• The slab should not have been treated with a waterproofing agent, cleaned with muriatic acid or a heavy tri-sodium phosphate (TSP) solution. The acid stain reaction cannot occur on surfaces treated with these products.
• For older, excessively power-washed, or mechanically-profiled concrete, the surface must be completely intact with no exposed aggregate or sand particles. Concrete acid stain does not stain rocks, sand or aggregate. Exposed aggregate or otherwise depleted concrete may cause the acid stain to take irregularly, react weakly or produce a color inconsistent with the acid stain color chart.
• For machine troweled or excessively polished floors, apply Direct Colors Hard Troweled Floor Prep to open the pores of the concrete before staining.
• Newly poured concrete should include less than 10% fly ash to insure a good chemical reaction with the acid stain. Concrete poured with excessive water in the mix can create a thin, unstable layer of concrete on the slab surface.
• To test for instability, press the tip of nail into the concrete. If breaking or damage of any kind occurs, the slab must be profiled with a sander or buffer using a 60-80 grit sanding disc before staining.
Often, concrete surfaces will have dry wall mud, paint, wood stains, tile adhesives, carpet adhesives, grease, pet stains, etc. on the concrete. Concrete Acid Stain is not an over coat, but is an opaque, penetrating color that permanently changes the appearance of the concrete. Areas where debris remains on the surface will likely not accept the stain leaving color imperfections on the floor, particularly mastic, dry wall mud and paint.
Use Bean-E-Doo, for the removal of adhesives.
Use Soy Gel Professional Paint Stripper to remove epoxy, water-based sealers, varnish or paint.
Use xylene remove solvent-based sealers and clean up sprayers or tools.
Use Soap and hot water to remove water-based sealer from applicators immediately after application
Cleaning floors that have been heavily soiled or have been previously tiled or carpeted to a stain-able level is a considerable amount of work, but not impossible. If you desire a more even finish, consider overlay resurfacing especially on slabs with exposed aggregate or surfaces so soiled that cleaning would prove too difficult.
Soy Gel is an low odor, industrial strength surface preparation option. Easy to use and consumer-friendly paint, urethane, epoxy and acrylic sealer stripper made with 100% American grown soybeans. Soy Gel will not lighten any acid stained, color hardened and integrally colored concrete surfaces, but will lighten or remove solvent dyes and water based stains.
Just pour and scrape!!! We’ve taken mastic removal to a higher level! BEAN-E-Doo® Mastic Remover makes the removal of asbestos glue, carpet glue, and ceramic tile glue clean and simple. Customers are amazed at the no odor, easy clean-up and disposal properties of this product.
New Formulation! Spray-on pre-treatment to chemically profile for acid staining or sealing excessively smooth machine-troweled concrete floors. Can also be used to clean lightly contaminated and dirt soiled surfaces.
Safely, quickly and easily remove damaged wax or build-up on concrete floors without harming the underlying sealer. Apply and rinse without machine scrubbing or neutralizing. Ideal for acrylic sealed surfaces!