How Long To Power Wash A House

It usually takes 2 to 6 hours to thoroughly clean house If you are planning to improve the appearance of the house.

Of course, this time span is relatively large. If your home is a standard single-story house of about 1,500 square feet, and the walls are only slightly dusty, it can be done in 2 to 3 hours. But if it’s a two-story villa with more than 2,500 square feet, you may have to prepare for 5 to 8 hours of physical labor. This timeline covers everything from preliminary preparation (such as putting waterproof tape on outdoor sockets and removing furniture), spraying special antiseptic cleaning agents, to final thorough rinsing. If you are holding a common household electric cleaning machine in shopping malls, because the water output (GPM) is low, the speed of washing hanging boards or brick walls will be very slow, and the overall time consumption is often more than 30% more than that of professional-grade fuel machines.

Key Factors In Determining Cleaning Time

Although 2 to 6 hours is a benchmark, specific to your home, the following variables will directly determine how long you will stay in the yard.

1. Area and Floor
This is the most intuitive factor. Cleaning a bungalow below 1,500 square feet is relatively easy, basically does not require a large range of moving ladders, the time can be controlled in 2-3 hours. However, in the face of a two-story building with more than 2,500 square feet, not only does the workload double, but you also have to spend a lot of time dealing with the eaves and hanging boards on the second floor. Safety risks and operation difficulties will lengthen the working hours.

2. The Severity Of Organic Pollution
Not all dirt is the same. If it’s just floating ash or pollen, the water goes over and is clean. But if the north wall of the house has been covered with thick green moss or black mold, you have to give the cleaner enough “reaction time”, so that the agent completely kill the root spores. If you want to rush directly in order to save this time. Ihe mold grew back in less than half a year.

3. Wall Material
Housing material determines the cleaning method. Plastic hanging board is more convenient, with “soft wash” (Soft Wash) technology can be washed quickly. Porous materials such as brick or stone, the dirt will drill deep and often require repeated washing or the use of more powerful professional chemicals to wash through.

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The Trilogy Of Pressure Wash

In order to manage time more efficiently, I suggest you disassemble the whole project into 3 stages:

Stage 1: Preparation (30 – 60 minutes)
Don’t skip this step. You need to remove patio furniture, barbecue grills and potted plants; seal outdoor power outlets with tape and check that doors and windows are tightly closed. Be sure to wet the surrounding flowers and vegetation with water first to prevent the subsequent spraying of detergent from burning the leaves.

Phase II: Spraying and reaction (1 – 2 hours)
This is the real descaling process. Whether you use high pressure or low pressure soft washing, make sure that the medicine has time to break down the mold. The spray must be “from bottom to top”, so as to avoid the generation of flow marks that are difficult to remove and ensure uniform coverage.

Stage 3: Final Rinse (1 – 3 hours)
Rinsing is usually the most time consuming. You have to rush “from the top down” to make sure all the foam and shedding dirt is completely washed away.

Impact Of Equipment: Why Is Water Out (GPM) The Key?

Many DIY players are most likely to fall into the pit is to choose the wrong machine. The water output of household electric cleaning machines is usually very low. You have to understand that pressure (PSI) determines “strike force”, while flow (GPM, gallons per minute) determines “flush speed”.

The flow rate of professional machines is usually 4 to 8 GPM, the water flow is swept, and the dirty things are gone. Ordinary household electric machines tend to have only 1.2 to 2.0 GPM. This difference in water output will cost you 30% more time in the flushing process, because you have to dawdle in the same place and over again.

Final Advice For DIY Owners

If you plan to do this job on weekends, set aside at least half a day for a standard home. As long as you understand the relationship between the size of the house, the performance of the equipment and the necessary preparation process, you can completely wash out the professional level, and you will not be in a hurry.

Author: Mark Henderson
“I am a professional with over 12 years of experience in the facade cleaning industry. Throughout my career, I have helped thousands of homeowners revitalize their properties, and I am passionate about sharing my industry insights to help enthusiasts achieve professional-grade results safely and efficiently.”