On the surface of materials, two distinct processes called efflorescence and oxidation can take place. The process of a substance (often a salt) being deposited on a surface and generating a white powdery covering is known as efflorescence. A substance oxidizes when it reacts with oxygen in the air and undergoes a change in color or appearance. Oxidation is usually found streaking from a material with paint on it.

 

Here are several methods for distinguishing between oxidation and efflorescence:

 

Appearance: Efflorescence appears as a white, powdery substance on a material’s surface. Often times Efflorescence will disappear when we and be most visible when dry. Oxidation, depending on the medium, might produce a variety of hues or discoloration. On Vinyl, oxidation often appears as a cloudy film. try running your finger over the vinyl. Is is now covered in chalky white substance? This is Oxidation

 

Source: Efflorescence is typically brought to the surface by water and is brought on by the presence of salts that are soluble in water. On the other hand, exposure to oxygen in the air results in oxidation.

 

Location: While oxidation can occur throughout a material or in some regions, efflorescence often emerges on a substance’s surface.

 

Removal: Both require their each unique commercial grade chemical to safely remove. Requiring technicians to wear PPE and is considerably more expensive than a simple cleaning.

 

If you are unsure of what you got going on it is important to consult a professional who can perform a free site visit for you and run some tests to diagnose exactly what you have going on, so you are don’t damaging your surface with high pressure cleaning methods.