Acid Wash Concrete Before Sealing

It is recommended waiting 24 hours between acid washing and sealing.

Acid wash concrete before sealing.

If needed you can also wet any surrounding surfaces down including the walls too in order to avoid those from being exposed to the acid solution used and damaged. When you acid etch concrete wear long sleeves gloves eye protection and a face mask to protect yourself from stray acid. Use a sprayer or watering can to evenly distribute that acid and let it sit for 2 15 minutes or until it stops bubbling. If the concrete is still damp moisture will form on the plastic gladwrap.

After applying the acid water mix and before it dries thoroughly water jet clean the concrete by blasting it with 3 000 psi close to the concrete with a fan jet rinsing is not good enough to remove the surface particles and a rotary jet like a lawnmower is the best way. The acid washing of concrete is a requirement after the concrete has cured sufficiently in order to remove surface efflorescence and to open the pores before sealing. One way you can test the moisture content of the concrete is by placing a piece of plastic or gladwrap over the concrete. You can also use acid in weaker concentrations to remove white mineral deposits efflorescence and heavy grime.

Acid washing also known as acid etching prepares a concrete surface to accept a sealer. Apply it liberally and slowly enough to prevent a spray. This will help the sealer to penetrate and result in a superior bond between the sealer and the surface. Acid washing is dangerous for people plants and metal objects especially indoors where fumes can concentrate.

The first step you need to do in acid washing concrete floor is hosing down the area in which the floor is about to be washed. This will help the sealer to penetrate and result in a superior bond between the sealer and the surface.