How to Acid Stain a Basement Floor That is Painted Or Sealed

Acid staining concrete produces rich, deep, translucent tones unlike paints or coatings that produce a solid, opaque effect. Depending on the color and application techniques used, the results can mimic everything from polished marble to tanned leather to natural stone or even stained wood.

The chemical stains (or acid stains) react with the concrete's lime content and produce the color. If the concrete surface is painted or sealed, acid stains cannot penetrate the concrete and react with the lime. Therefore, a concrete surface that is painted or sealed cannot be acid stained.

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Do you have to remove the paint or sealer from the concrete surface to acid stain it?

Not necessarily!

With the advent of latest acrylic polymer modified concrete, it is possible to apply a thin layer (1/8inch thick) of concrete over an existing painted or sealed concrete surface with minimal surface preparation. Please find below typical steps involved in applying a micro-topping / concrete overlay and acid staining over a painted or sealed concrete surface.

a. Run a sander with 60grit sanding screen over the entire surface. To ensure that the paint or sealer is bonded to the substrate, run the sander for at least 1 hour for every 1000ft2.

b. Rinse the floor with mild detergent and allow it to dry completely.

c. Apply a liberal coat of acrylic primer, Cp1000.

d. Allow this primer cure overnight (at least 10 hours).

e. Apply a second coat of acrylic primer, Cp1000. The second coat needs to be applied just to damp the surface.

f. Once the primer turns clear and it is dry to touch, it is ready to accept the concrete overlay.

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g. Apply the polymer modified concrete overlay, Pentimento at 1/8inch thick. It is a retrowelable concrete overlay...which gives a very smooth concrete finish.

h. After 24 hours of the curing or polymer concrete overlay, it is ready to take acid stains (chemical stains).

i. Spray the acid stain, Patinaetch at the rate of 250ft2/gal. Allow it to react for with the lime in the concrete for at least 2-3 hours. Follow the standard process of cleaning off the residue. Pay particular attention to cleaning the residue and neutralizing the surface with ammonia.

j. Allow the surface to dry for at least 24 hours, before sealing it with one coat of water based epoxy, Perdüre E32 and one coat of water based polyurethane, Perdüre U46.

Application of Pentimento does not solve the mositure emission problem. It is highly recommended to conduct a MVER test before the application of Pentimento and acid staining with Patinaetch. Concrete resurfacing is a faster and sometimes less expensive option than grinding off the paint or sealer. Even if they can be removed from the surface, there is no certainty that you will get desired results after acid staining. Concrete resurfacing is the way to go!

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Installing the Basement Floor

Refinishing the basement floor is a good start to make for a more habitable basement space. In most of it, the drywall is normally installed but the concrete floor is often exposed, so installing a basement floor that is more comfortable can alter the whole basement's look significantly.

There are several things to keep in mind if you decide to install the basement floor. First of all, it is one place in your house that often experiences leaks. In this regard, you will have to choose the kind of flooring which is durable and does not ruin easily upon water contact.

Carpeting the basement is often a wrong choice as the risk of water damage can damage the carpet in a single leak. On other hand, ceramic tile or waterproofed natural hardwood are preferred materials since they are resistant to this kind of damage. Do not choose linoleum tile because this is vulnerable to basement issues.

If you admire the exquisiteness of hardwood but don't like to deal with the possibility of wood rot, choose synthetic hardwood instead. This type of wood is made of resins and durable plastics therefore this kind of basement flooring shun the common problems evident in natural floors. Moreover, they are inexpensive and easier to set up.

These synthetic floors allow you to make wiser budget on your project and be able to spend more for the important items like paint, fixtures and other basement enhancements. A number of steps are involved in installing the basement floor. The basic one is to prepare the existing floor.

The concrete floor must remain its place serving the original purpose of the house's structure, and place the overlay over it. Install the new floor for the basement on top of the overlay. You may fix the floor right on top of the concrete like most tiles, but this depends on the kind of floor you have chosen.

Take your time and learn precisely what you need to do to fix your floor. This can save you the future hassles. Furthermore, if you make sure your floor is installed properly, you will encounter fewer problems with the basement flooring in the future.

Try to avoid utilizing the cheapest supplies and quickest methods for the flooring since they don't last long and require additional work and outlay to deal with later.

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