How Often Do I Need to Power Wash a House?

One way of using your power washer that people often overlook is by using it to wash your house.

Although it is probably the biggest asset we own you would be surprised how many people actually don’t realize that they can power wash their own house.

But how often should you power wash your house?

The results can be pretty amazing when power washing your house, but you should only do a full house wash once every year. If you have special circumstances where an area has gotten dirty then wash the area as and when you need to.

In this article, we will explore different things to take into account when planning on what you need to know before, during, and after power washing your house.

worker with high pressure washer cleaning house facade

Is Power Washing Bad For Your House?

If you do not power wash your house in the right manner, power washing can be very destructive. This goes for other popular pressure washing surfaces like concrete or wood decks.

When pressure washing a house, plastics paint and other brittle materials could easily be damaged, scratched or completely removed.

The main function of a pressure washer is to push water through a small hole at the end of the hose, this creates immense pressure and the jet of water can indeed cut through certain materials.

To avoid damaging your property, you should stand at a distance that allows the water jet to lose some of that initial pressure.

If you have particular areas that are brittle, power washing should be avoided altogether.

Most pressure washers have a function that allows you to turn the nozzle to create a mist instead of a jet, this could be used on areas that are more fragile.

What Should I Spray My House With Before Pressure Washing?

The initial wash stage should be performed using a mildewcide and bleach mix.

Consult your models manual regarding the right mix, but a good rule is for every nine parts detergent use one part bleach.

If you have shrubbery, plants, or foliage in close proximity to your property you should take the proper steps to make sure these are sheltered from any back spray or overspray.

Use plastic sheeting and duct tape or tie-wraps. 

Why You Should Not Pressure Wash Your House

If you have any form of dashing (pebble, bottle, rock) then you should never pressure wash your home, the power of a pressure washer, even at a low psi, could dislodge the dashing.

You should also avoid pressure washing your home if it is made of hardwood as the high pressured water could penetrate the wood and cause severe structural damage.

Always make sure you’re using the right amount of pressure when dealing with different surfaces and materials.

What Time of Year Is Best to Power Wash Your House?

Typically, you should power wash your house between the months of March and November.

Obviously, if you live in a hot or cold climate you may need to adjust this but for the sake of this article, we will concentrate on the average weather cycles.

The winter months can be really bad for power washing because of the added hazards, ice forming, power washer failures, and underperforming detergent.

Not to mention the fact that power washing in the winter seems a little counter-productive due to the actual weather.

Taking this into account, power washing should be done in the spring/summer cycle. This cuts down on some major hurdles and allows the property to dry quicker. 

How to Pressure Wash A House

What Is The Perfect Weather Condition to Power Wash Your House?

Most people believe that power washing your home needs to be done in sunny conditions, but this is actually wrong. When the sun is shining and there are no clouds in the sky power washing can be really difficult.

It becomes really difficult to see marks and streaks and the water can dry quite quickly leaving unsightly marks on windows and plastics.

The best time to power wash a house is to do it on an overcast day, the diffused sunlight helps in finding dirty marks and streaks.

You should never perform any pressure washing during a thunderstorm, the large pressure washer hose is an excellent conductor for lightning.

Safety Steps You Should Follow Before Power Washing

  1. Before turning on your pressure washer you should be wearing eye protection, you will be protected against projectiles, high-pressure water, and grit whilst wearing them. Most injuries sustained during pressure washing involve damage to the eyes.
  2. Make sure that the area you are working on is free of any trip hazards and people and pets are made aware that you are pressure washing.
  3. Pressure washers run on electricity, due to the fact you are using water you need to make sure that all sockets and covered and waterproofed.
  4. Do not ever use a ladder when using a pressure washer, because of backpressure, you need to be able to have a firm stance whilst using the hose.
  5. Always read the user manual supplied with your pressure washer.
  6. After you have finished using your power washer you should make sure the hose is clean and serviced and the unit is stored in a dry place.
  7. All detergents and bleach should be stored in an area that is hard to reach or locked away so children cant get hold of them.


Pressure washing is an ideal way to get rid of years of grime, mildew, and dirt, the high-pressure water jet can cut through all of this within a fraction of the time it would take to hand scrub.

You can also reach areas of the house that you wouldn’t normally be able to reach without a ladder.

But pressure washing should not be performed if your home’s exterior is made from any of the materials mentioned in this article.

Great care needs to be taken whilst using the pressure washer, and there is an element of preparation required before undertaking any form of pressure washing, especially on your home.

There are professional companies who will come to your house and perform the work for you, these people are insured against damage, loss, and injury.

If you don’t feel confident power washing your own home maybe think about getting one of these companies to the job for you.