Best Stucco Cleaner

10 Best Stucco Cleaners (Siding, Wall Stains & Mildew)

Planning to head on for cleaning a stucco surface around your home? It could be the walls, ceilings, or even the external siding of your home.

But whatever it is; your cleaner matters a lot!

Especially when you need a deep clean for an effective result. For that, you’ll need our first choice: Wet & Forget Stucco Cleaner.

Remember that the stucco surface is highly porous, it stains easily. Besides, its tendency to peel off and fragility calls for regular maintenance and cleaning. And that happens pretty easily when you’ve got the right cleaning accessories.

Let’s look at some of the best stucco cleaners in our perspective and analysis!

Best 3 choices below [SHORT TABLE PREVIEW]:

Image Name Our Rating Price
Wet and Forget – Stucco Cleaner for Moss, Mold and Mildew

5 out of 5

Check On Amazon
CLR PRO Calcium, Lime and Rust Remover for Stucco

5 out of 5

Check On Amazon
Outdoor Cleaner with Hose End Attachment – 30 SECONDS

4.5 out of 5

Check On Amazon

To read about our product selection procedure, visit the “About” page.

Types of Stucco Finishes and Cleaners to Use

Cement plaster is used for stucco finishes. It’s commonly applied to siding, walls, and many exterior sides of any buildings. They form a nice texture and require less effort to clean besides being a durable finish. But, of course, they come in different types.

Consequently, you must know their types to clean them appropriately. For instance, you can’t apply your pressure washer on synthetic stucco finishes. It might probably damage the surface. So, here’s what you should know about the different types.

Namely, there’re two types:

  • Traditional Stucco
  • Synthetic Stucco

1. Synthetic Stucco

This kind of stucco utilizes acrylic that resists water damage. It dries uniformly, fast and it can be used over foam board instead of mesh. Furthermore, acrylic resin adds stucco movement, reducing the chances of breaking and cracking.

What Cleaners to Use for Synthetic Stucco Finish?

When it comes to cleaning synthetic stucco, you should never use the pressure washing approach. Instead, use a gentle brush to avoid breaking or damaging the surface. Moreover, the rinsing and washing process should be done gently as well.

Recommended synthetic stucco finish cleaner on our list: Wet and Forget Stucco Cleaner

2. Traditional Stucco

When you combine sand and lime with water, that’s what traditional stucco is. It’s durable because of the cement the portion mixed in it. And the lime portion keeps it flexible to shape. Some manufacturers might add glass fibers or acrylics just to make it stronger. And, that’s the way traditional stucco is reinforced.

So, it’s excellently a versatile option for those expecting a smoother and rough texture on the surface. Finally, if you can understand the right water mixture ratio and thus install it properly, it will last up to 5 decades without damaging the surface.

What Cleaners to Use for Traditional Stucco Finish?

Well, it’s all the same for both of the types of stucco. But, specifically, you can use a pressure washer on the traditional finish as it tends to be stronger and durable.

Recommended traditional stucco finish cleaner on our list: Oxy Solve Concentrate Pressure Washer Cleaner

10 Best Stucco Cleaners for Siding, Walls (REVIEWS)

Our list contains some of the top 10 market-leading products. From liquid cleaner to pressure washer system, we’ve covered it all in one place for you. Certainly, they’ll help you prevent stains caused by algae, air pollution, dust build-up, dirt, and more.

We can’t wait to bring them in front of you!

1. Wet and Forget – Stucco Cleaner for Moss, Mold and Mildew

Highlighted Features:

  • Ideal for any outdoor surface
  • Free from harmful chemicals
  • 1-step application process
  • No scrubbing/power washing


  • Manufacturer: Wet & Forget
  • Style: Liquid stain remover
  • Coverage: 750 – 2,250 sq. ft.
  • Suggested for outdoor uses

As the name suggests, you just need to ‘wet’ the stained area and ‘forget’. This product is so convenient and renowned for being the easiest stucco cleaner to use. You don’t even have to scrub at all; even no-pressure washing is required.

It’s well worth the money that gains an effective result within 24 hours!

Many homeowners also love it because of its versatility. It can be used to clean various exterior surfaces apart from your stucco material.

For instance, this works as a great aluminum siding cleaner. You might also use it on any painted surfaces, concrete, vinyl, wooden deck, PVC, brick, roofs, and more. It gives you a wide range of surface applications you wish to clean!

So, if you want an all-purpose easy-to-use cleaner, consider the Wet & Forget doer.

It comes in a 1-gallon container bottle. You’ll have to dilute it with water that can produce 6 gallons of spray. Thus you get enough spray to finish up the cleaning project. Depending on surface porosity, it covers up to 2250 sq. ft. approximately.

Recommended Pump-Up Garden Sprayer

After you spray over the stucco surface, it doesn’t require any scrubbing or power washing. The cleaner contains active ingredients that easily clean algae, moss, mildew, and lichen. It’s safe to use since it’s free from acids, phosphates, and bleach.

Considering all these benefits, you might expect it to be expensive, right?

But, NO, that’s not the case at all!

Instead, it’s one of the most affordable options out there. And, if you’re looking for the easiest solution, you’ll love this Wet & Forget Stucco Cleaner! With amazing features, it ensures the surface stays beautiful and clean, throughout the year.

After all, it’s definitely recommended for a surprise clean on the stucco materials!

2. CLR PRO Calcium, Lime and Rust Remover for Stucco

Highlighted Features:

  • Highly versatile
  • Non-toxic & biodegradable formula
  • US EPA-certified
  • Easy to use


  • Manufacturer: CLR
  • Size: 1 gallon
  • Color: Clear
  • Scent: Lemon

Hard water contains trace materials like magnesium, iron, manganese, calcium, etc. When such minerals accumulate around the stucco lining, they tend to stain the surface.

While cleaning the surface can help to remove these stains, an average cleaner may not cut them out. But, the CLR PRO Calcium, Lime & Rust Remover will get the job done for you. It’s well worth being in the second position on our list.

Considered by experts as one of the strongest stucco cleaners!

It’s multipurpose and can be used to clean various surfaces. Apart from outdoor surfaces, you can use it in the kitchen and shower. Consequently, it’s safe to use in the septic and plumbing system. The EPA has certified this product as a highly versatile cleaner.

With industrial-strength formula, it acts very fast. That way, it’s one of the best cleaners for stucco siding, walls, ceilings, or any other surface under that material type.

Even better, it doesn’t contain harmful materials like bleach, phosphates, or ammonia. As for effectiveness, this product can get rid of hard lime as well as calcium build-up. The potent, non-toxic formula uses both gluconic and lactic acids.

Apart from removing lime and calcium deposits, this cleaner is ideal for removing rust. So, you can use it on rusty tools, car parts, ceramic tile, fiberglass surfaces, stainless steel, and other outdoor equipment.

CLR Cleaner is available in a 1-gallon bottle.

It comes in liquid form. For that, you might require an additional spray system to spread it around. And you can restore your old stucco materials to like-new condition. This doer cleans hard and brightens the surface.

Overall, it’s a safe cleaner that doesn’t compromise on quality and performance!

3. Outdoor Cleaner with Hose End Attachment – 30 SECONDS

Highlighted Features:

  • Spray & rinse application
  • Fast-acting, non-toxic formula
  • Works on a wide range of surfaces
  • Provides a like-new appearance


  • Made by – COLLIER MFG. LLC
  • Size: 64 Ounces
  • Type: Spray nozzle container
  • Specified for outdoor cleaning

Why use a pressure washer to clean your stucco siding, when you don’t really need it? That’s what our 3rd pick is about!

It’s one of the best cleaners that you expect for greater performance on stucco!

A fast-acting cleaning product that takes only about 30 seconds to react. And, it removes any kind of stains caused by harmful mildew, mold, or algae on the surface. So, you’ll see a noticeable result almost instantly.

On top of that, this product is super easy to use. You just need to spray it on the stained surface, leave it, and rinse it off after some time. No hard scrubbing or pressure washing is required at all! For excellent results, you can repeat this process at least once.

Its formula is environmentally friendly, meaning it will not damage grass or other plants around your house. Besides, when you rinse it off, the cleaner disintegrates completely without leaving toxic residues in the ground. Even though you may smell bleach after and during the application, this cleaner is not harmful at all!

Another great thing about this product is its versatility.

Apart from stucco, you can use it on canvas awnings, vinyl siding, plastic furniture, lanais, brick walls, asphalt driveways, outdoor furniture, and concrete sidewalks.

This cleaner is available in a 64 Oz. bottle. With that, you can easily cover approximately 400 sq. feet. The container bottle comes with a hose-end attachment for your convenient application. Considering its efficiency and versatility, there’s no way we couldn’t include it on our list.

In fine, its fast-acting formula provides results in a matter of minutes!

4. Oxy Solve Concentrate House & Siding Pressure Washer Cleaner

Highlighted Features:

  • Eco-friendly
  • EPA-Certified
  • Multipurpose application
  • Peroxide power booster


  • Manufacturer: Sunshine Makers Inc.
  • Size: 1 US Gallon
  • Coverage: 6,400 sq. ft.
  • Pressure washer concentrate

Oxy Solve House & Siding Cleaner is also a highly rated doer by SIMPLE GREEN. A famous store for introducing amazing products.

It’s specifically designed for cleaning your house siding with pressure. Thus ensuring your house exterior is free from those repulsive grime, mold, and mildew stains.

This cleaning solution works on various surfaces including stucco, vinyl, aluminum, and wood. In addition to being compatible with different surfaces, this cleaner is eco-friendly and it’s free from harmful materials.

Instead, it eliminates mold, grim, and moss using the cleaning strength of the peroxide. Also, since this cleaner is EPA-certified, it’s extremely safe to use. So, when using around your home, this won’t affect your plants, lawn, pets, or kids.

It’s well worth the amount for amazing coverage!

The concentrated solution comes in a 1-gallon bottle that is enough to create about 21 gallons of cleaning solution. This can effectively cover an area of up to 6,400 sq. ft. After the application, for an excellent result, remember to rinse the surface before it dries out.

With that in mind, it’s good for a large plastered stucco surface. Furthermore, its direct release formula reduces wastage in the environment.

So, it’s economical to keep your home exterior neat & clean!

5. Concentrate 1 Gal. Stucco Outdoor Cleaner, 30 SECONDS

Highlighted Features:

  • Odorless formula
  • Easy application
  • Fast-acting
  • Strong outdoor cleaner


  • Manufacturer: 30 SECONDS Cleaners
  • Size: 1 gallon
  • Type: concentrate solution
  • 4 package options available

This is yet another cleaner from 30 SECONDS that we’ve featured on our list. But considering 30 SECONDS is one of the leading manufacturers of outdoor cleaners, that shouldn’t come as a surprise.

Their products guarantee a pleasant and fast cleaning experience. So, if that’s what you’re looking for, don’t hesitate to invest in this! Not to mention you start seeing results within ’30 seconds’, as the name already says that!

It’s compatible with almost all outdoor surfaces.

Whether you want to clean concrete sidewalks, stucco siding, asphalt driveways, brick walls, gazebos, and more, this product works just fine.

To apply this cleaner, spray it on the surface, leave it for a while, and then hopes it off. Once you do that, you’ll be left with a clean and bright surface that is free from mildew and mold. Since the cleaner doesn’t contain harsh chemicals, it’s safe to use.

Being eco-friendly and biodegradable, it won’t burn your plants or grass. You’ll love how it comes odorless leaving no lasting smell on the surface.

Regarding the packaging, this stucco cleaner comes in a 4 pack of 1-gallon bottles. However, it’s also available in 64-ounce, 5-gallon, and 2.5-gallon bottles. This allows you to choose the ideal size to match your cleaning needs.

6. Mold Armor, E-Z House Wash, 1-Gallon Container

Highlighted Features:

  • Acts quickly
  • Dilutable cleaner
  • Removes tough stains
  • Very effective


  • Manufacturer: MOLD ARMOR
  • Contains Sodium Hypochlorite
  • Requires spray system
  • Size: 1-gallon

To get rid of mold, mildew, and algae on your home’s exterior, you just need a garden sprayer and this E-Z House Wash from MOLD ARMOR!

This cleaner comes in handy if you want to clean stains on almost every exterior surface. It’s ideal for cleaning stucco, brick, wood, aluminum, concrete, decks, fences as well as wood siding. One of its ingredients being sodium hypochlorite, which contains chlorine.

This bleach base gives about 2X extra performance!

So, with this product, you just need one run to get rid of all the stains on your stucco siding. That’s how effective this product is!

The chlorine substance won’t kill your plants or grass. This is because it’s in low proportions. So, if you follow the manufacturer’s instructions while applying this, your landscape will be safe. You’d also love to hear that it’s easy to use and works in a couple of minutes.

Just spray it on the stained surface, leave it for five minutes, and rinse it off! So, as the name implies, this cleaner is easy or ‘E-Z’ to apply. Just follow the instructions while diluting this solution with water, and you’ll see results in a matter of minutes.

The solution comes in a 1-gallon bottle. With that in hand, you can cover an area of up to 2,000 sq. ft. It’s also available in a strong spray bottle that fits perfectly onto the garden hose.

7. MOLD ARMOR – Stucco Surface Cleaner

Highlighted Features:

  • Superior nozzle design
  • No scrubbing needed
  • Works within 10 minutes
  • Easy to use


  • Manufacturer: Mold Armor
  • Size: 1-gallon
  • Type: Spray nozzle container
  • Bleach-based cleaner

If you want your home exterior to retain its beauty, you should consider buying this Mold Armor E-Z house wash. Its effective bleach formula comes in a spray bottle with a powerful spray nozzle. Thus giving your stucco siding that clean look instantly, without having to scrub the surface.

Apart from stucco, you can spray this solution on other surfaces like brick, wood, and vinyl siding. And rest assured, the cleaner will; effectively remove any heavy algae, mildew, moss, and mold stains.

Its amazing formula is designed to work within 10 minutes.

Therefore, you don’t have to wait for long to start seeing noticeable results. Once you spray the cleaner, just leave it for its action, and then rinse it off.

The package comes in a pack of 2 spray bottles with each bottle having a capacity of 64 ounces. That amount can cover up to 4,500 sq. feet area. Each spray bottle has an integrated spray selector that helps you to select the ideal sprat pattern for various tasks.

That unique feature has blown our minds too much deep!

Thanks to the spray bottle’s nozzle design, you can control the flow of the diluted solution. The powerful spray will also help you to remove debris and stains on hard-to-reach places with ease.

So, you skip bearing a ladder on your shoulder when using this!

8. “30 SECONDS” Ready-to-Use Stucco Cleaner with Trigger Sprayer

Highlighted Features:

  • Ready-to-use product
  • Fast-acting, effective formula
  • Ideal for all outdoor surfaces


  • Manufacturer: 30 SECONDS
  • Size: 1 quartz (2 bottles)
  • Type: Spray bottles

30 SECONDS is a wonderful brand. You might already guess we loved it very much as this cleaner is our 3rd pick from that same brand. It’s super convenient and handy! We couldn’t resist our look when searching for the best one to sit at number 8 on our list.

It produces a very effective result in only about 30 seconds!

Now, some people might be afraid of how it’s going to handle things with their landscape beauty! Because when you apply on your stucco siding, for instance, the liquid might fall off on the land as droplets. So, that’s a valid thought indeed.

But, you don’t really have to worry at all!

This cleaner is free from any toxic chemicals. And, it has a fast-acting formula that gives you a bright outcome keeping away the stains. So, it’s safe to use around your house. And, it will give your home exterior a like-new appearance without compromising safety.

Even better, you don’t need to scrub the stains once you use this cleaner. You get a very strong clean against those mold, mildew, and algae build-up almost instantly.

Just like the other 30 SECONDS products on our list, this cleaner is compatible with various surfaces. You can use it on stucco, vinyl sidings, brick walls, plastic furniture, concrete sidewalks, and more.

However, unlike most brands, this product doesn’t require any mixing since it comes ready-to-use. The package comes with 2 spray bottles, each having a capacity of 1 quartz. This makes applying this product extremely easy.

You just need to spray on the cleaner or hose it off with the garden hose.

With this product, you’ll feel like you have installed new stucco plaster overnight. That way, it’s a great choice for every eco-activist.

9. Citra-Shield, Ready to Use Strong Cleaner for Stucco

Highlighted Features:

  • Ready-to-use & Highly versatile
  • No rinsing/scrubbing required
  • 12 months protection cycle


  • Manufacturer: CTS Group LLC.
  • Requires spray system
  • Size: 1 gallon

If durability is your biggest concern when looking for stucco cleaner, then CITRA-Shield is a great option for you. After application, this product can last up to 12 months, meaning that you won’t have to wear those cleaning cloths for a year almost!

Just one application and your home exterior will be free from stains and moss for a whole year.

Amazing, right?

Moving on, you can use this cleaner on any exterior surface.

So, apart from stucco, it works well on other surfaces like concrete, tiles, stone, wood, and more. Furthermore, it effectively removes and prevents the formation of mold, algae, mildew, and lichen on decks, driveways, and roofs.

But the most unique feature of this product is that it comes ready to use. Just spray it on the stained surface, leave it and forget nothing else! You don’t have to dilute it with water or even scrub the stain after application. Hence, making it one of the easiest options for preserving outdoor surfaces.

Another good thing about CITRA-Shield cleaner is that it is environmentally safe and pet-friendly. All thanks to its non-toxic formulation.

This cleaning solution comes in a 1-gallon bottle.

And that’s enough to cover an area of about 200 sq. ft. However, the coverage will depend on the spray you use to apply the solution.

10. Rust-Oleum JOMAX Cleaner with Hose Attachment

Highlighted Features:

  • Bleach, ready-to-use formula
  • Lightweight hose application
  • Safe to use


  • Manufacturer: RUST-OLEUM
  • Size: 1 quart
  • Coverage: 1,500 sq. feet

We’ll wrap up with another wonderful stucco cleaner by RUST-OLEUM.

The company is also highly known in the USA, offering superior products for protecting and cleaning various surfaces. One of those being this Rust-Oleum JOMAX House wash! This powerful non-bleach cleaner disinfects and cleans the surface at the same time.

Just spray the surface, and leave it to work!

Its formula effectively kills mold, bacteria, and mildew on hard surfaces. This product also removes any odor caused by those organisms, leaving your surface smelling revitalized and looking clean. Also, since this product doesn’t contain harsh chemicals, you can use it near shrubs and plants.

You can apply it on various outdoor surfaces. To name a few – stucco, wood, metal, asphalt, vinyl, brick, and aluminum. However, you can also use it on indoor surfaces such as fiberglass, plastic, ceramic, Formica, and painted surfaces.

It’s worth noting that it comes ready-to-use. Besides, it easily removes unsightly streaks, mildew, and dirt on the surface. Not to forget that it’s safe on both trim and siding. Considering all these applications, this cleaner is perfect for regular house cleaning.

As for the packaging, the cleaner comes in a convenient 1 quartz bottle. With that, you can easily cover an area of about 1,500 sq. feet. And, the garden hose application enables you to spray the cleaner up to the 2nd store of your house.

Overall, if you want to clean moss, lichen, or algae on the stucco surface, it never goes wrong with this Rust-Oleum JOMAX House Wash!

Stucco Cleaner Buying Guide: Things to Consider

Situations are not the same for everyone. It varies from person to person and based on that a certain product might not serve you the best if not chosen carefully. That’s why we’re giving you a few important things you should consider before finally purchasing one.

So, you don’t have to regret it later at all!

1. Ease of Use

While some cleaner requires a spray system, others don’t. So, if you’re a person without a sprayer, buying one that requires it, won’t be able to handle that comfortably. Consequently, if the cleaner itself doesn’t do a very good job, you shouldn’t really be able to see its magic!

Besides, some of them come ready to use, while others don’t. So, they require diluting with water to create a working solution.

2. Action Duration

For instance, 30 SECONDS’s products work very fast. While our top pick requires about 24 hours. Fast-acting products are good for those in rushes. But if you can wait and use a slow dissolving one, you will be surprised by its performance.

Because you know that it takes time to remove something tougher, right?

3. Safety

Saving the home surroundings is as important as cleaning your stucco exterior. So, you must pick one that doesn’t harm the living of the shrubs and grass around the landscape. Moreover, animal life’s matter!

Hopefully, you get all those cared already with one of them on our list!

4. Amount

Consider the purpose area of the application. Several products offer multiple package options for large surface area applications. Hence, making an informed decision about the right package would release the work agony and keep the process fast and simple.

Top 7 Stucco Cleaner Brands

Top products will come from top-rated brands, simple! All the same, we’ve listed 10 products from 7 different brands. So, we’ve repeated a few of them from any of the 7 brands of stucco cleaner.

Let us give you an overview of these brands:

1. Wet and Forget

This is the winner brand today and most recommended. As you can see we’ve listed wet and forget as our first pick (below). Surprisingly it’s an outstanding innovation by the manufacturer. Although it takes a bit of time (almost 24 hours), it returns what you expect to see!

2. CLR Store

CLR is an NSF-certified manufacturer in the USA. They’ve got a huge variation of collections for fighting against tough-to-remove grime and dirt. The one we’ve listed in the 2nd position on our list can even be applied in food service facilities if needed.


We’ve picked 3 toppers from this brand. Guess how it participates in the competition. Their motto is “It’s clean, when YOU want it clean!”. The company produces several amazing outdoor cleaners. Among which, we’ve got the best 3 for you to use for cleaning your expected stucco surface.

4. Sunshine Makers, Inc (SIMPLE GREEN)

Its cleaner is committed to safely clean the dirt without harming the environment. This brand meets the Safer Product Standards by U.S. EPA.

5. Mold Armor

Now, this is the 5th most rated brand on our list. With the combination of modern technology and biology, they’ve been bringing value for about 6 decades. The company is fairly growing by keeping pace with its consumer’s needs.

6. CTS Group LLC

CTS Group has developed CITRA-SHIELD EXTERIOR ALGAE CONTROL SYSTEMS for about 18 years. It’s a ready-to-use product that’s most suitable for novices. So, there won’t be any hassle of diluting it with water as it’s already prepared to keep the right proportion.

7. Rust-Oleum Corporation

The last one on our list is the RUST-OLEUM brand. Good for small area DIY stucco cleaning projects. And, it’s the second ready-to-use product maker on our brand list.


That’s it for today! Hopefully, you know the situation better than ever before. And your stucco cleaning gets mastered with our best selection guide. So, if this article helped you find your best stucco cleaner product; please share this content with others.

Stay safe and bye!


1. What is stucco? How often should I clean it?

Answer: Stucco is a popular exterior finish that is found in various homes. It’s simply an environmentally-friendly material that contains a mixture of sand, limestone, and concrete. It’s recommended that you clean the stucco siding at least once every year.

2. Is power wash allowed to clean stucco?

Answer: That will depend on the type of stucco. If it’s synthetic, you should avoid using a pressure washer to avoid damaging the finish. But if it’s traditional stucco, you can use it.

3. Can I use bleach as a stucco cleaner?

Answer: If you notice stains, mildew, and mold on the surface, you can use a bleach solution to remove them. This solution should contain one part bleach and one part water.

4. Does stucco cleaner affect my paint?

Answer: No, stucco cleaner will not affect your paint. Instead, it will keep your stucco free from algae, mold, and mildew.

5. What causes rust stains on stucco?

Answer: Rust stains on stucco are caused by rust on nearby metallic objects like grates or vent covers. Moreover, if you’ve got a synthetic stucco exterior made up of foam board layers, the studs securing the boards underneath may also rust. Hence causing rust stains that might appear on the wall surface.

6. Can I pressure wash synthetic stucco?

Answer: It’s not recommended to use a pressure washer when cleaning a synthetic stucco wall. This is because synthetic stucco is very fragile and pressure washing can damage the finish.

7. Is hard water stains on stucco removable at all?

Answer: If hard water stains are left to sit for long, they can become permanent or hard to remove. For that, you should remove those stains regularly.

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