Brush or spray on a 1 10 diluted mix of acid in water onto the surface.
Muriatic acid concrete etch.
When you acid etch concrete wear long sleeves gloves eye protection and a face mask to protect yourself from stray acid.
Muriatic acid acts like liquid sandpaper by roughening the surface of the concrete.
But hcl won t do much for the oil stains.
Use a sprayer or watering can to evenly distribute that acid and let it sit for 2 15 minutes or until it stops bubbling.
Then mix 3 or 4 parts water with 1 part muriatic or hydrochloric acid in a plastic bucket.
Acid etching is the process of applying hydrochloric muriatic or buffered phosphoric acid to a slab then rinsing it off with water.
It also reduces the surface alkalinity of the concrete that can cause some paints to adhere poorly.
Muriatic acid or hydrochloric acid has long been the accepted acid etching method of professional installers and homeowners.
Concrete etch and cleaner is a cleaner and etch combination that opens the pores of concrete surfaces to allow coatings to penetrate and achieve a proper bond.
It will look somewhat brighter as it is eating away the surface and revealing fresh material.
Washing brick concrete or stone with muriatic acid can neutralize alkalinity allowing paint finishes to last for years.
It should be handled with extreme care.
Muriatic acid is diluted hydrochloric acid.
For many years it was a standard method of concrete preparation used by nearly all industrial commercial and institutional floor coating installers depending on the floor size and system to be installed.
Muriactic acid is one of the most dangerous chemicals you can buy for home use and it can damage nearly everything it touches.
A true alternative to muriatic acid it creates the same profile but without the dangerous chemicals harsh odors and need to neutralize after etching.
How to acid etch concrete.
Use muriatic acid or another acid etching material such as klean strip green muriatic acid a safer muriatic acid or hydro etch 1000 which is a modified phosphoric acid which is not as harmful as traditional muriatic acids.
