The stain will not take at all if you use acid as a cleaner.
Cleaning concrete for staining.
For final cleaning you should do a good scrub down using t s p.
Because acid stains need to penetrate into the concrete surface to work it s especially important that the concrete surface is completely clean.
Mop or rinse a couple of times with clean water.
The process is still the same.
Clean and prep your old concrete as outlined above apply the stain let sit the appropriate amount of time then neutralize.
To remove pour one eighth of a cup of liquid dishwashing detergent into a spray bottle then top off the bottle with warm water and shake well.
Get those unsightly grease oil and transmission fluid stains off your concrete driveway or garage floor.
Trisodium phosphate and water.
Do choose the right cleaning product for the job see questions to ask when choosing a concrete cleaner or degreaser.
The main thing is to not use any kind of acid wash or etching solution including muriatic acid to clean the slab.
The bad news for the fastidious homeowner is that.
Your supplies are likely to be a bucket scrub brush and detergent.
Our concrete stain prep and our wax remover are both excellent concrete degreasers.
Spray the concrete stains with the soap solution.
Hydrogen peroxide or ammonia also work well too.
Spray them with oven cleaner.
General concrete driveway maintenance tips.
Resealing your driveway every few years will restore its like new appearance and make it less vulnerable to stains.
Carpet glue tile mastics water and urine stains chalk marks caulk grease stains paint drips and rust spots are just a few of the contaminants you may encounter once you remove an existing floor covering.
Let it settle for 5 10 minutes then scrub with a stiff.
Cleaning an old concrete slab so it will take an acid stain can be very difficult but it is possible.
Acid staining old concrete is the same as staining new concrete with a few caveats.
Semi dirty outdoor concrete cleaner bleach water 1 8 cup dishwashing detergent.
Most stains on concrete floors can be removed quickly and easily but a lot depends on how old the stain is and how porous the concrete surface is.
Reapply sealer as needed.