Grease and Oil Problems
The first thing that you need to consider is where you’re cleaning. Let’s assume that you were cleaning commercial property that is susceptible to oil and debris from foot traffic and cars (parking lots etc.). That alone would require a great deal of pressure to wash away, but more so, you’ll need to kill the goop, and oil that can be deposited deep within the concrete. Hot water can penetrate and break up the elements, allowing you to move things faster, whereas cold water is only going to work friction. Friction alone is not going to help you clean things thoroughly.
Another reason why you should look towards using heat is to disinfect. The disinfection process is going to help you not only remove deposits of grime, dirt, and mold, it’s going to ensure that things are not coming back to haunt you. It’s tough to get rid of these things across exteriors as it is, so why risk having them return? Seriously, it’s best not to let these things comeback, which is where hot water comes into play.
Safe To Use
Some individuals may worry about the damage that hot water can pull through with pressure washing. High heat water can dissolve certain materials, but if you’re working with concrete, and asphalt, that’s not going to be a problem. The hot water used in pressure washing is not going to melt anything. It’s just going to allow for cleaning and disinfecting, nothing more. You don’t have to worry about damage, or issues related to this, which is why it’s best to utilize this option for cleaning exteriors.
At the end of the day, it’s easy to dismiss the notion of using hot water. However, if you are serious about getting exteriors clean and disinfected, test this out once. You’ll find that it trumps all other options with relative ease. Even without detergents, heated water works best.