Long gone were the days when people used their hands to scrub off the old paint. Now a pressure washer is a “life savior” in giving your house a glossy new coat in no time!
You can imagine how exhausted and time-consuming the task of manual cleaning is! It not only takes ages to remove the old paint but also does not guarantee the consistency of the cleaning. You may leave some patches and unremoved spots here and there!
That’s when a pressure washer comes into handy. This device will take the burden of cleaning off your shoulders by providing an efficient way to have the job done in a matter of minutes.
However, the biggest question here is “How to pressure wash a house properly?”. If you fail to apply the washer correctly, the high water pressure is likely to ruin the exterior, and you can soon say goodbye to your house’s fabulous look.
So, how to prevent this tragedy from happening? Keep reading my post until the end to find out the answer you need to master your pressure washer!
If you want to impress your neighbors with the house’s shiny and gorgeous new coat, then YES! House washing is a crucial step in every exterior painting application process.
Even though you think your house’s exterior looks clean enough, there are several spots you can’t see with your naked eyes and the cleaning will become pointless. Especially, when you start applying the new paint to the surface, which is not adequately washed, there is no guarantee that the color will last in the long run. You don’t want to waste a considerable sum of money on maintenance and paint replacement, do you?
Thanks to the fantastic invention of power washing, you can quickly get rid of stubborn dirt, the old ugly paint, chalking, and smelly mold that you are barely able to reach and see.
Pay attention to the chalking as it can be a pain in the neck if you don’t remove it right away by power washing. It refers to the old paint surface, which is broken down into small particles under years of being exposed to the sun.
To verify this, use your fingers to swipe over the paint film and see the white chalk accumulate on them. If you continue applying the new paint on this residue without pressure washing in advance, the paint won’t stick appropriately. The same thing happens with dust. Remember that you always need a clean surface for the paint to hold on.
In case you spot the growth of mildew on your home’s surface, let the power washing chemical substances get rid of those annoying problems that interfere with your long-lasting paint coat. Don’t try to “deceive” the mold as it will develop and break through the new paint at an incredible speed.
So, once again, pressure washing your house before painting is a MUST! This task not only ensures that the exterior is suitable for painting but also lengthens the lifespan of your new paint.
Now you have known that pressure washing is an essential step in the paint application. Next comes another important part, which is to determine the suitable size of pressure washer for different materials and surfaces.
Experts often measure the pressure created by a washer in PSI (pounds per square inch). These PSI figures may vary depending on what you aim to clean. For example, for car washing, you only need a small amount of pressure to remove the dirt, while much pressure is required for cleaning stubborn oil stains.
Another factor to consider when it comes to the size of the pressure washer is GPM (gallons per minute). GPM informs users the number of water released from the machine every minute so that they can adjust their use and demands.
Keep in mind that if your demands never exceed 2500 PSI, opt for a pressure washer whose PSI is around 2600 PSI. Don’t waste your money on 3000 – 4000 PSI models just because they are sturdy and able to wash away anything! If you have no intention of using them, why spend money on such a redundant feature?
Besides, different tasks require you to meet different requirements. Thus, know exactly what you need to have the job done will guarantee your buying of a washer with suitable pressure.
For house washing, mainly paint stripping, a 4000 PSI washer is perfect to complete the job.
The more water comes through the nozzle per minute, the quicker your cleaning is. Let imagine you use a water spray gun and target it at a garbage clump. You can break the bunch, but the dust stays where it is. Now pour a bucket of water over it and see the dirt flushed away. So, how to get the best of both worlds?
BINGO! The perfect combination of high pressure with huge water volume brings about a pressure washer for cleaning a house at a recording speed.
According to the time of use, you can easily adjust the GPM figures to suit your needs. For instance, a 14-minute cleaning time requires around 2 GPM, while a 4-minute one takes up to 4 GPM for quicker cleaning.
You have already purchased a pressure washer with a suitable size for yourself. Now let’s get the job started!
Before diving deeper into the central part of the article today, which is “How to pressure wash a house,” there are several necessary tools you need to prepare for a smooth and effortless house washing.
Note: Make sure to choose the detergent explicitly made for house cleaning and stay away from those which may ruin your surrounding plants and furniture.
As I mentioned earlier, too high water pressure is likely to damage your surface. Thus, keep the nozzle at an appropriate distance away from the siding at first and move closer slowly. Stop immediately if you notice any damage to the siding and consult the experts. Keep continuing with your cleaning only makes the problem worse and you can soon say goodbye to your new flawless paint.
In general, wait until everything is arid, let’s say 48 hours, before applying the new paint. Note that the timing may vary based on different materials. For example, wood sidings have a slow-drying feature than that of vinyl plastic or aluminum. If you can’t process the painting right after the pre-wash, don’t wait more than a month as dirt can accumulate, leading to another time-consuming and exhausting house wash.
Of course, not! Feel free to apply other cleaning methods to give your house a new shiny look. But, in my opinion, these methods can hardly reach the practical level like a pressure washer and consume more time.
Always consult the experts or manufacturers to know what cleaning suggestions are available, what size of pressure washer fits your project, or which chemicals are safe enough to use.
In A Nutshell
How to pressure wash a house has never been more comfortable if you follow my instructions above carefully. If you want to clarify any of my points, don’t hesitate to drop a comment below and I will reach you as soon as possible!