If the water soaks in, then you are good to start prepping for staining. If water beads up or sits on top of the concrete, you will need to strip the sealer from the concrete before you can start staining. For the other contaminants listed above, just take a look at the concrete itself.
Even if you do not have any contaminants on the concrete, you will need to clean the concrete well before staining. However, different contaminants on the concrete require different tools and methods to deal with, so we have outlined what to do.
You'll need to remove the sealer before staining. To remove concrete sealer pour on Xylene also known as Xylol or Touline onto the concrete and let sit for 30 seconds or so, then scrub with a stiff straw brush. Then use a painter's shield to scrape the sealer into a pile and remove with a square point shovel. Then pour a little more Xylene on and repeat.
If you're staining old concrete outside, such as staining an old concrete patio, you can power wash the sealer off of the edge of the concrete. If the concrete floor has wax, you will need a floor wax remover. You want to apply the floor wax remover to the old concrete, let it sit for a while, and scrub with a soft bristle brush. Mop up the area as you go until the floor wax is completely removed.
Note: if you need to remove both wax and sealer, then there's no need to strip the wax and then the sealer, as the Xylene will melt and remove both at the same time. You'll need to remove these with a paint stripper, mastic remover or heavy duty glue remover. With paints and glues you will still likely need to lightly sand the concrete. Which you can do with a rented floor sander or floor buffing machine with the sanding pads. If you have grease or oil on the floor, you will need to use a degreaser or stain prep for concrete floors.
Since the concrete is old and you may not know for sure if any type of oils, grease and thin petroleum products have ever been spilled on the concrete, we suggest degreasing the concrete regardless.
We suggest using our Concrete Stain Prep because it's not only a degreaser but also a natural solvent that helps to deep clean and lift oily petroleum contaminants up and out of the concrete pores. Give the area a final clean with T. After your floor is completely dry, you are ready to move on to the next step: staining concrete. Use a small test area before staining all of the concrete.
You want to pick an out of the way area, such as a closet if you are staining an old concrete basement floor. You want to acid stain just a few square inches of concrete and see what the result is.
The reason that you want to test older concrete is three fold: to ensure that the concrete is properly stripped and cleaned, that the concrete stain will react properly, and that you like the color.
We offer all of our stains in sample sizes for this part of the process. Now can I stain my floors a new color? Above: When designing an office for a NYC startup on a tight budget, designer Brad Sherman made the existing stained concrete floors work the floors that have drawn my ire of late actually look something like this.
Photograph by James Ransom courtesy of B. Sherman Workshop. What if I want a uniform look? How much would it cost to have my floors redone professionally? How much would it cost to have a penetrating sealant re-applied? How much would it cost to have an industrial coating professionally applied? Photograph by Alison Engstrom for Remodelista.
Above: After just two years of use at Toki Cafe in Amsterdam, the dark blue floor paint shows signs of wear. Photograph courtesy of Toki. Join the conversation. Related Stories. Read all recent posts. You may be surprised—as we were—that this idyl. Using this method means that your concrete floor stain color will be tied up in the sealer so when the sealer wears off so does the color of your floor.
Epoxy treatments are often used to repair damaged concrete. It can be poured to cracks and crevices. In applying epoxy paint over concrete stain proper preparation is required. Ensure that the concrete floor is dry and thoroughly clean the concrete to remove any stains.
Then etch the concrete with muriatic acid to make the concrete slab porous enough to accept the epoxy. Apply the epoxy using a paint brush or paint roller. If you are really out of options and doing remedy on your concrete floor seems like making the problem worse you can just cover it up with nice carpeting.
However, carpeting will also require additional cost and you have to totally redo your project and prepare again separate tools and materials. Also, carpeting can be just a band-aid solution not fixing your concrete can further damage the floor in the long run. So if you are really running out of options calling a professional might be the best. Professionals will provide you further options and aid you in accomplishing your dream concrete floor for our homes.
A bad concrete stain job can be disappointing since you already put an effort and used money to achieve a decorative concrete.
However, there are still several methods you can do to save your failed concrete stain job and you can still actually improve the design. Methods presented in this article can be useful depending on the type of problem. You cannot easily decide to use a specific method without first determining what needs to be done because doing so can further worsen the situation.
For any questions and suggestions about this article, please feel free to submit your thoughts in the comment section below. You can stain again over your stained concrete, however, the color will not be as rich and even for all areas of your concrete. The color of restrained concrete will be then different from the sample stained concrete slab that serves as the basis for your color as compared to the naked concrete floor.
The concrete that is stained can last for a maximum of years, but in order to achieve this duration it stained concrete should be properly maintained by applying seal and floor wax at least once or twice a year. Concrete stains offer a more luxurious look on your concrete floor than paint since it creates a pigmented, marbled effect instead of just having a one color.
It is also easier to apply than paint, however, concrete staining requires frequent reapplication to keep it looking new, thus, making it more expensive as compared to just painting your concrete. Stained concrete should always be maintained and protected for its color to last longer. Thus, it is advisable to apply a new coat of sealer once or twice a year or even when you noticed that water is already being absorbed or flatten out in the concrete instead of water beading up in the surface.
It is suggested to coat your concrete with sealer twice because the first coat is usually absorbed by some areas of the concrete leaving an uneven sealed concrete. The second coat provides a better finish since it will ensure a proper coverage on the floor evening out the color of your concrete. Kimber n. Sullivan, C. Concrete Decor. Direct Colors. How to Fix Concrete Acid Stains n. Concrete Network. Options for covering a terrible concrete stain job n.
Do It Yourself. Wagner, K.
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