Both will remove rust from your concrete.
Etching concrete floor with muriatic acid.
Phosphoric acid which is a mineral acid works almost as well and isn t as dangerous to work with but it is harder to find and more expensive.
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.
These sorts of products give the concrete a professional looking sheen and also resist water grease oil and other common spills making the floor easy to maintain.
A smooth concrete floor must be roughened before paint will stick to it.
Eco friendly products are available as well which are biodegradable and easier to dispose of in most communities.
Mix 3 to 4 parts water with 1 part acid or follow label instructions for a 10 concentration 15 for hard smooth concrete.
If you don t like the idea of working with acid you can read about some safer alternatives to acid etching here.
Muriactic acid is one of the most dangerous chemicals you can buy for home use and it can damage nearly everything it touches.
You roughen such a floor by etching it with muriatic 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.
These solutions are for etching the concrete.
The good thing is that there are safer alternatives that are just as effective available in the market today.
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.
Many acid etching projects are carried out to prepare a concrete floor for the application of a synthetic epoxy or sealant.
Muriatic acid acts like liquid sandpaper by roughening the surface of the concrete.
Some homeowners shy away from acid etching of their concrete floors for fear of the harmful effects of using and handling muriatic acid the main component of acid etch flooring.
