Remove oil stains using a powerful degreaser such as seal krete oil stain remover.
Etching solution concrete floor.
Then mix 3 or 4 parts water with 1 part muriatic or hydrochloric acid in a plastic bucket.
For garage floors and other smooth troweled concrete mix gallon of seal.
They are used to abrade the surface.
The concrete etching solution should be spread on a small area of the floor with a long handled brush.
Seal krete clean n etch is an etching solution used to clean and degrease bare concrete surfaces to improve penetration and adhesion of paint stains or sealants.
Power wash concrete and make sure it is free from dirt dust and debris.
Etching solutions do not clean the concrete.
Clean n etch is biodegradable and safe to use near grass and plants.
If the acid etch mixture is not properly mixed at a 10 solution the solution will be to weak to properly remove concrete latencies or it may be too strong and etch the surface deeper than necessary and soak into the concrete surface and contaminate it with a destructive lingering acidity after floor materials are applied.
When you acid etch concrete wear long sleeves gloves eye protection and a face mask to protect yourself from stray acid.
The floor should be examined carefully afterward and if the texture still appears smooth the process needs to be repeated until the floor has a sandpaper like quality to it.
Don t skip this step if you want a long lasting painted concrete floor.
Paint will not stick to oily concrete so be sure that any grease and oil stains are cleaned as thoroughly as possible.
It also neutralizes the ph of new concrete.
Use a sprayer or watering can to evenly distribute that acid and let it sit for 2 15 minutes or until it stops bubbling.