Speed and pressure have this ability to turn the weakest and the slightest material into a powerful force. A lightweight piece of metal can be turned into a bullet, air can be made to support an aircraft and so on. Buy a machine to bring speed and pressure to a stream of water – as a high-pressure washer can – and you give the water unimaginable kinds of power. It can strip the rust off old steel tools, and it certainly can clean the most impacted, hard-to-reach and stubborn kinds of dirt.

They make high-pressure washer devices for commercial and domestic purposes. You can use these to water your lawn and clean your car or you can use these in a commercial setting for variety of purposes.

Most people on the market to buy a high-pressure washer don’t realize this, but buying a high-pressure washer, you’re not limited to getting something that just uses cold water. Think about it – what is more powerful than high-pressure steam of cold water? It has to be a high-pressure stream of hot water and steam, of course. When you’re talking about stubborn mold and well-established oily dirt, high-pressure hot water would be wonderful.

You just need to take your time to analyze your needs and buy the right kind of device.

One way in which the cheaper models shortchange you usually is in how they offer you a smaller variety of pressure settings. For instance, if you’re trying to clean set dirt off the bottom of a car, you are going to need some fantastic levels of pressure. Try to clean window glass of the other hand, and you want less pressure than would punch a hole right through it. The cheaper models will offer you fewer levels of pressure setting and they will often put the control in an inaccessible place.

As with most power tools, going with lightness of weight and portability in a high-pressure washer will require you to sacrifice on power. The really powerful high-pressure washer machines that operate at 4000 pounds per square inch and work off a powerful 12 HP motor can be so large, they come with their own cart mounted on small tires. These can end up costing you about $900.

Buying a high-pressure washer, there are a number of things you need to make your mind up about first. They come powered by your choice of electric motor or gas engine. You’ll find that the really high-powered models are the ones that come with gas powered petrol engines. Of course, if a lot of your work is indoors, you’ll find that a petrol engine may not really be appropriate because of the exhaust smoke.

If you’re a home user, something that’s 1500 pounds per square inch should do just fine. Unless of course, you’d like to do things like clean the moss off your concrete walls and concrete driveway. In that case, a full-featured gas powered model that works at 3000 pounds per square inch might be ideal. While hot water model might be convenient, you do have to realize that it can cost 10 times more than a cold water model.

Knowing where to look though is half the battle won. You could just go out and find the first petrol pressure washer you can lay your hands on, but the fact of the matter is you need to do your research. Take a look at the petrol pressure washers site to get a feel for what you need – they even go as far as to give you an idea of price by linking to the products on Amazon. It’s not a foolproof method of choosing the best one for your needs, but it’s a lot better than shooting blind.

One of the hardest things to know is how much you need in terms of PSI, or power. PSI stands for pounds per square inch, and the higher the number, the easier it’ll be to remove even the most stubborn dirt. What’s more you’ll gain a greater range too, so if in doubt, get the best you can justify paying for. You’ll thank yourself (and us) later when you’re facing some of the toughest clean up jobs with ease.

Managers at large public buildings, when they are requisitioned by the cleaning department for a pressure washer, often hesitate or stall. With $5000 as the entry price, commercial pressure washers can be pricey big-ticket items to buy. They do realize that public buildings see lots of traffic and there can be some pretty challenging cleaning duties around. They do realize that heavy-duty cleaning equipment might be called for. But it can be worrisome all the same. Perhaps a little introduction to how commercial pressure washers could really help could set their minds at ease.

Even industrial buildings don’t have the kind of cleaning needs that commercial buildings usually do. Schools, government buildings, offices, shopping malls, hotels – these places see thousands and thousands of visitors every day. Industrial buildings don’t usually see any more than the workers who usually come and go. Where there are lots of people walking by, there is usually be associated filth, debris, vandalism and so on.

There’s a good reason why labor movements in the past used to vehemently oppose anyone bringing in machines. They felt it would displace actual workers. They were right. The reason businesses usually like to get machines in place of people is that machines are things you only have to buy once. People, you have to pay wages to every week.

Buying commercial pressure washers should be considered financially viable because in its place, you would have to hire a bunch of people painfully scrubbing away at dirt forever. And lots of dirt there will be.

Any kind of place that sees a lot of people traffic will inevitably have to deal with grease, food spills, chewing gum, stains, and just plain old grime. Only high-pressure washers can get rid of these in a short period of cleaning time.

Mostly, commercial pressure washers with high-pressure cold and hot water, are highly effective on hard concrete and tile. They can put out some pretty scary pressure levels that only very rigid surfaces can actually take. But when they are matched to the right kind of surface, these washers can truly be effective. It doesn’t matter how hardened, baked on or stubborn the stain is. There isn’t a stain that is resistant to this kind of pressure.

Mostly, a purchase decision needs to take in account the kind of area that the washer will be deployed at. If it has access to electrical power, it’s easy to buy an inexpensive electric-powered appliance. Otherwise, a gas-powered on would be completely appropriate.

Perhaps the best reason to buy commercial pressure washers is this – they are environmentally friendly. with this kind of pressure involved, you don’t need to use any environmentally harmful chemicals in the cleaning process. It’s just water. And you can put a sign out there that proudly declares “These premises are cleaned through the green cleaning processes”!

Have you ever had a professional roof cleaner try to talk up to you how great his services are, by telling you that he does high pressure cleaning on algae or mold or anything else on your roof? A roof pressure cleaning is always a bad idea though. So it’s a wonder that professional cleaners will still try this with potential clients. It’s a wonder that they talk about pressure cleaning in a boastful way as if they thought that it could impress.

The thing is, just because your roof is made of hard, tough materials, doesn’t mean that it’s indestructible. Especially when your roof needs to be in immaculate shape to remain waterproof. Pressure washers produce an unbelievable amount of pressure. How much pressure, you ask?

Let’s try to put this in perspective. Your garden hose is usually able to put out about 75 pounds per square inch or PSI. In comparison, the pressure washer that they use for roof pressure cleaning is 2500 psi. That’s enough to crack shingles with.

What is more, roof pressure cleaning isn’t exactly going to take the algae out. While all the high-pressure water will certainly loosen the stuff that’s attached to your roof, it is not going to wash it all off. While the roof will look great for a few days, the algae can come right back. In some cases, the high-pressure water will wash the algae off. But it’ll also push the spores there deep into any microscopic holes there may be in your roof.

You’re probably asking yourself, if something with less pressure than this might work you – like 1000 PSI. Professional roof cleaners will sometimes use something they call a Pitch witch – a little cart that has several nozzles that deliver pressurized water. The cart rolls all over your roof. But even 1000 PSI is too much. Whatever you do, you don’t want anything that’s more than 1000 PSI.

Basically, a professional roof cleaner needs to come in and use old-fashioned manual labor to clean your roof. He needs to scrub things clean with a gentle spray of water and bleach. Nothing stronger than this will do. Roofs, whether you realize it or not, are delicate things. You don’t want to do anything that could compromise the integrity of the roof. Make a mistake here, and you could be staring at a terrible leaky roof not far down the line.