Chemical stains (acid stains) are water acidic solutions of metallic salts interact with the lime from the concrete. After the chemical reaction is fully gone, the stains (that happen to be actually metallic oxides) become integral part of the concrete and gives it a beautiful mottled colored surface. The critical component of coloring concrete surfaces by having an acid stain or chemical stain is the reaction between the stain and lime in the concrete. -stained_concrete-
In many remodeling projects a lot of people want to rip up their carpets, tile and linoleum and think they can acid stain the prevailing concrete substrate and achieve a beautiful surface. Unfortunately, it's not that simple. Concrete resurfacing using a self leveling concrete or micro topping becomes necessary in the following cases.
1. Usually under the carpet, tack strips are widely-used to hold down it down so when these tack strips are pulled up after removing the carpet, they create holes in the concrete in the nails used in the tack strips. If the holes are patched and then stained, they will color differently and get noticed like a sore thumb. Applying a skinny micro-topping over the entire surface hides all imperfections and helps to create a brand new canvas to acid stain.
2. Sometimes carpets are glued as a result of the concrete substrate. Get the job done carpet glue is removed, there could be some glue residue left from the pores of the concrete which behaves as a resist or may create spots on the surface. It will be makes sense to cover the entire surface with a thin concrete overlay to get desired results.
3. If the ceramic, porcelain or quarry tiles have been in good condition, it behooves to resurface the tiles with self leveling concrete and staining it using a chemical stain. If some tiles loosing or coming off chances are they should be removed and patched before pouring a self leveling concrete. Removing tiles and grinding with the tile mastic 's time consuming, messy and dear. Be resurfacing the prevailing tiles, the project can claim LEED points under reduction of waste and pollution in the project.
4. In many metropolitan cities there exists a popular trend of converting old warehouses into lofts. Stained concrete is an excellent look for loft floors. However the existing concrete substrate may possibly not have enough reactive lime to the chemical reaction. In these cases self leveling concrete or micro-topping will be the way to go.
5. If the existing concrete surface has paint overspray, permanent ink markings (left by framing contractors), caulk lines, hydraulic oil spills, concrete curing agents and/or flyash, installing the concrete overlay becomes mandatory to get a stained concrete floor. -stained_concrete-