How to Wash Stucco

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How to Wash Stucco: a blog detailing the proper way to wash stucco.

Step 1: Prepare the Mix

Mix 1 part mild detergent with 5 parts water in a bucket. Use a mild detergent that does not contain any abrasives, bleaches or ammonia. Fill the bucket with approximately 6 gallons of hot water and mix thoroughly. Pour the mix into a garden sprayer and attach the sprayer hose to your garden hose.

Step 2: Wash Off Loose Debris

Attach your garden hose to an outdoor faucet and turn on the water at full pressure. Rinse off any loose dirt or debris that may be on the stucco using only your garden hose. Keep the water pressure as high as possible without damaging the stucco surface.

Step 3: Apply Detergent Mixture

Spray down the stucco with the detergent mixture using a sweeping motion from side to side across the surface. Aim for even coverage over all areas of stucco by holding your sprayer about 1 foot away from the surface. Spray liberally–about 3 gallons per 500 square feet of stucco should be sufficient–and let it soak into the surface for several minutes before rinsing it off.


When it comes to exterior home maintenance, it’s important to know how to wash stucco. Stucco is a common wall covering in homes throughout the southwest and California. If you have stucco on your home or building, it’s important that you know how to clean stucco so you can maintain it properly.

Properly cleaning and maintaining your stucco walls will help keep them looking new and prevent any damage from occurring. Learn how to wash stucco below!

How to Clean Stucco

Cleaning Your Stucco Walls

When it comes to knowing how to clean stucco on walls, there are a few things you should be aware of. It’s important not to use a pressure washer on your stucco walls because the pressure could cause damage. Instead, use a regular garden hose and nozzle with just water. Don’t get too close with the hose because this could also cause damage. If you do want to use a pressure washer, make sure it isn’t above 1,500 psi.

How to Wash Stucco

Are you looking for a way to clean your stucco? You’ve come to the right place! We are here to help you with all of your stucco needs. We want to help you learn how to wash stucco and make it look as good as new.

If there is one thing that I learned from my years as a stucco contractor, it’s that the best stucco repair man is the one who has a love for his work. Now, I know what you’re thinking: “What does that even mean?” Well, let me explain it to you.

When a person loves what they do, they are willing to put in whatever time is necessary to get the job done right. They aren’t afraid of working late or calling in sick when needed. They will do whatever it takes because they believe in their product and service. This type of person will always give 100% no matter what the situation may be.

I always try my best at everything I do and never stop until I achieve perfection or something close enough to satisfy myself. When it comes down to it, that’s all anyone can really ask for – perfection

Stucco is a very durable exterior finish and is almost maintenance free. However, it can become dirty and stained by mold, mildew, salt and grime. When this happens, it is time to wash the stucco. You will need some basic equipment, the proper cleaning solution and you are on your way.

Step 1 – Obtain the Proper Equipment

You will need a hose with a pressure nozzle, a long-handled soft bristle brush, a bucket and your cleaning solution.

Step 2 – Make Your Cleaning Solution

The easiest way to make your cleaning solution for washing stucco is to use a trisodium phosphate cleaner mixed with bleach. Mix one part trisodium phosphate cleaner to one part bleach in a bucket. Fill the bucket with warm water from your hose (not hot water) until it is half full. Stir the mixture with a paint stick until well mixed.

Step 3 – Begin Washing Stucco

Start at the top of the wall and work down. Spray water on an area approximately 3 feet wide by 3 feet high. Then apply your cleaning solution generously to this area with your long-handled brush, scrubbing well into the stucco surface. Let the area soak for about 15 minutes before

Washing stucco is a simple task, but it can be made difficult by overcomplicating the process. Here are the steps to washing stucco:

1. First select a nice sunny day for your cleaning project. This will ensure that the stucco dries thoroughly and does not support any mildew growth after you have cleaned it.

2. If you have shrubs or other landscaping under your stucco, cover them with a drop cloth or some plastic sheeting to prevent damage from the cleaning solution.

3. Rinse down the stucco with a garden hose to remove any loose dirt or debris. You may need to use a scraper to remove stubborn debris in areas that do not receive regular rainfall and washing from rainwater.

4. Once the loose material has been removed, mix up your cleaning solution in a bucket or garden sprayer according to the directions on the label of the cleaner you are using. If you are using a bleach-based product, make sure that you handle it carefully and wear rubber gloves while applying it so that you do not irritate your skin or damage clothing with bleach spills.

5. Apply your cleaner liberally to small areas of stucco at a time, scrubbing it

When stucco walls get dirty, it’s important to clean them properly. Using the wrong technique or equipment can damage the stucco and leave unsightly marks that are hard to remove. Here are some tips to help you wash your stucco walls safely and effectively.

Before You Start

Before you begin, gather all of your supplies and put on rubber gloves to prevent skin irritation from the cleaning agent. You will need a garden hose with a high-pressure nozzle attachment or pressure washer, a cleaning solution, a scrub brush or broom, a ladder and an extra person to help you move the ladder.

If you want to use detergent when washing your stucco walls, mix one-quarter cup of mild dishwashing liquid into one gallon of warm water. If you want to use bleach when washing your stucco walls, mix one cup of household bleach into one gallon of warm water. If you have stains on your stucco walls that are caused by mold or mildew, mix together three cups of powdered laundry detergent with two gallons of hot water in a bucket. Then add half a cup of household bleach and a quarter cup of trisodium phosphate for every gallon of this solution that you mix.

Use a hose or pressure washer to apply water to the stucco wall. For best results, start at the top of the wall and work your way down in a circular motion. If you have any areas that are particularly dirty, such as oil stains from cars parked near the house, let the water sit on these spots for a few minutes before rinsing.

Use a soft-bristled brush and soapy water to clean areas of the stucco wall that are extra dirty. Use a ladder to reach higher spots on the wall. After scrubbing, rinse the soap off with your hose or pressure washer.

Fill a bucket with clear water and use it to rinse off your brush. Dip the brush in the bucket and scrub it against itself to remove any remaining soap residue or dirt. Continue rinsing until no foam appears when you scrub the brush against itself with clear water.

Rinse off your soft-bristled brush with clean water after each section of stucco. Repeat steps 2 through 4 until you have washed all of your stucco walls.

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