Clean Concrete Floor With Muriatic Acid

A smooth concrete floor must be roughened before paint will stick to it.

Clean concrete floor with muriatic acid.

You roughen such a floor by etching it with muriatic acid. Muriatic acid is the strongest acid available to the public. Follow these easy steps to acid wash your concrete or garage floor. With proper use it removes stains when other cleaners fail.

These solutions are for etching the concrete. Acid etching is the process of applying hydrochloric muriatic or buffered phosphoric acid to a slab then rinsing it off with water. 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. If you re just removing mineral deposits efflorescence use a much weaker mix 10 1 or 16 1 for muriatic acid.

Mix 3 to 4 parts water with 1 part acid or follow label instructions for a 10 concentration 15 for hard smooth concrete. Muriatic acid can work wonders on filthy concrete and it can also be very useful in cleaning excess smears of dried mortar and grout or when attempting to alleviate tough rust stains. For cleaning a concrete floor the equipment used should have a pressure rating of 3 000 psi minimum and a flow rate of at least 4 gallons per minute both the pressure and flow rate are needed to clean a concrete floor at an acceptable rate. If the acid comes in contact with skin wash it away with large amounts of water.

Hose the surface in order to remove any tough particles. Muriatic acid is a strong acid cleaner used on masonry surfaces to clean stains. Remove everything from the surface and sweep away the dirt. Step 1 clean the surface.

It also reduces the surface alkalinity of the concrete that can cause some paints to adhere poorly. Muriatic acid should never be used indoors and has to be thoroughly neutralized before disposal. Oxalic citric and muriatic acid are commonly used to clean concrete and masonry. In order to achieve the perfect finished project you must first clean the floor which you plan to acid wash.