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How To Clean A Roof With Bleach

How To Use Bleach To Cleanroof Shingles

Cleaning a Roof with Oxygen Bleach

Using bleach is a fast and efficient way of cleaning and keeping your roof shingles clean. It can be is used to clean stained and dirty roof shingles.

Some of the items you will need for the method below include water, chlorine bleach, 1 cup of powdered laundry soap, a stiff roof broom/brush, ladder pump garden sprayer, a large bucket, a ladder, gloves, apron, goggles and rubber soled shoes with good gripping.


Bleach irritates mucous membranes, the skin and the respiratory system. Do not forget to put on protective gear gloves, lab coat or plastic apron, and goggles

Bleach reacts readily with other chemicals, so caution should be exercised when using this chemical. Ensure the area is well ventilated when diluting or using bleach.Cold water should be used for dilution as hot water decomposes the active ingredient, sodium hypochlorite, rendering it ineffective.

Spring Cleaning Start At Top: Clean Shingles

If your drive for spring cleaning demands a clean house inside and out, you may wonderwhat to do with those dirty shingles.

Before you pay high costs to replace your roof, try cleaning it.

In high-humidity areas, roofs often turn dark brown or black within five to seven yearsbecause fungi and algae feed on dirt in shingles.

The fungus can start growing on a new roof right after the first shingle is laid down,says Dale Dorman, a housing specialist with the University of Georgia Extension Service.

“The growth first appears as black streaks or wedge-shaped areas that spreadacross the roof,”> Dorman says. “After a few years, the discolored areasmerge, and uniform discoloration eventually results.

“Fungus and algae growth is usually heaviest on west- or north-facing roofs or onthose shaded by trees,” she says. “Dew dries more slowly in these areas.”

The good news is that these stains don’t mar the roof’s strength or service life.Research at Mississippi State University found several chemicals can remove shinglediscoloration caused by fungi, algae and lichen.

“One of the best cleaners is liquid household bleach,” Dorman says. “Andit doesn’t damage the shingles.”

Apply a 75 percent solution of household bleach to asphalt shingles. Use one gallon of solution per 30 to 50 square feet of roof surface.About 15 gallons of bleach will treat 1,000 square feet of roofing.

“Roofs will remain clean for at least five years if sprayed with the 75 percentbleach solution,” Dorman says.

How To Clean Your Homes Vinyl Siding

From dirt to grime to the fertilizers you spray on the lawn, home siding takes a beating. Fortunately, vinyl siding is relatively easy to clean so you can keep your home looking neat and well-maintained.

Youll find many recipes for homemade siding cleaning solutions online. A good all-purpose mixture is 70% water and 30% white vinegar. This mixture is perfect for tackling light dirt and mold. Simply apply it using a soft cloth or a soft bristle, long-handled brush. Work the solution from the top down to eliminate streaking.

If stains are stubborn or tough, its okay to try a household cleaner like Murphys Oil Soap or Windex. However its always a good idea to spot check the cleaner first to make sure it doesnt discolor the vinyl.

Never use steel wool, nail polish remover, or other harsh solvents or products on vinyl siding.

Pressure washers arent always the best option to clean vinyl siding. Some siding makers dont recommend pressure washing at all, while others may recommend using a specific amount of pressure. If you know which company manufactured the siding, check its website for recommendations.

If you choose to pressure wash your homes exterior, point the stream straight at the siding. Pointing the stream at an angle increases the chance youll get water behind the siding, potentially allowing water to get into your walls.

Did you clean roof shingles or siding but your home still looks shabby?

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Cleaning Roof With Bleach And Water

Cleaning the roof with bleach and water is one of the easiest and most efficient ways to take care of your shingles. However, following the right procedure is essential to consider in ensuring you experience good results. Here is the step-by-step process on how to go about it.


  • Bleach


  • Use the ladder to climb and inspect the roof so that you can find areas affected by algae, moss, mold, bacteria, mildew, and other micro-organisms.
  • If you have vegetation and plants around your home, make sure you wet them first to protect them from the bleach mixture.
  • Mix the equal parts of the bleach and water in a 50:50 ratio to form a bleach cleaning solution.
  • Pour the mixed solution into the garden hose sprayer.
  • Take your ladder and climb the roof, and then spray the shingles with the solution.
  • Wait for the solution to work on the roofs surface for about 20 to 30 minutes.
  • Finally, rinse with water thoroughly.
  • If you plan to use this method, ensure you do it during morning hours when cloudy and without rain. Also, avoid cleaning on a sunny day because the bleach will evaporate. If you clean and some organisms remain, repeat the process until the roof is sparkling clean.

    Can You Clean An Asphalt Shingle Roof

    How to Clean Roof Shingles with Bleach

    You can clean an asphalt shingle roof, and you should if you notice any type of damage occurring on it. There are numerous products available to clean asphalt roofing the aisle that sells shingles at your local home reno store will also probably sell cleaning products.

    Cleaning of asphalt shingles is primarily done via chemical means. Using brunt force to scrub or scrape shingles is not a good idea and will only exacerbate the wear on the shingle itself, shortening its lifespan more. There are several recommended cleaners, but using a bleach mixture is usually best.

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    Will Bleach Damage Concrete Roof Tiles

    Is Bleach Safe for Tile Roofs and Does It Cause Damage to Roof Tiles? According to data issued by the Consumer Reports organization, the commonly implemented chlorine-bleach solution is NOT recommended due to the damaging effects it can cause to roof tiles. Chlorine is a toxic gas that has corrosive properties.

    Benefits Of Using Bleachfor Roof Cleaning

    Bleachis readily available and one of the fastest ways of cleaning algae from theroof and shingles. It is a strongcleaner that kills algae and fungus and removes stains that comes with it. Itmakes it easy to get rid of dirt on the roof and shingles.

    There is no need of rinsing or inspecting theroof after the application.

    Oxygenbleach is recommended because it does not harm plants and animals in theenvironment. It saves time and energy because there is no need of wateringplants and vegetation before cleaning the roof with bleach.

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    Roof Cleaning With A Pressure Washer

    Some may believe that you can clean your roof simply with a pressure washer, and while that would probably work theoretically, using a pressure washer for roof cleaning is the kiss of death for the integrity of that roof. Especially if you are trying to clean an asphalt shingle roof. The granules will start to come off and will end up in the gutters, which can and does happen normally with age, but speeding up the aging process for the roof, is not the best idea and is something we avoid.

    How To Clean Moss Off Roof With Vinegar

    Does bleach damage my roof and what do you use to clean a roof?

    Vinegar can be amazing at getting rid of moss. All you need to do is to follow these 3 steps:

  • Spray undiluted vinegar directly onto the moss.

  • Leave for 10 minutes.

  • Scrape off with your brush.

  • If all of the moss isnât budging you can let the solution sit for a day, and the acid in the vinegar should shift it.

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    How To Remove Moss From A Roof

    If your roof has sprouted a moss infection, you can remove it before it becomes serious enough to impact the performance of your roof. Moss is tough and typically you will not be able to remove it by hand. However, you can use a chemical solution to loosen the moss without damaging the shingles. We dont recommend that you step on the roof for moss removal.

    Materials Youll Need

    • A ladder .
    • A moss-specific cleaner that does not use bleach and is rated by the EPA.
    • Or your own cleaner mix of mild bleach or mild detergent mixed with water in a spray bottle. You may mix 2 cups of chlorine bleach with 2 gallons of water. Or you can use 8 ounces of dish soap with 2 gallons of water.

    How To Remove Moss From a Roof

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    A Word About Pressure Washing

    A pressure washer is often the best choice of equipment for cleaning an entire roof, but using one takes some preparation. Take note of anything near the house that could be damaged by wet spray and cleaning products from the roof. Close your windows and doors tightly. Move or cover garden furniture, decor, and vehicles. Turn off the electrical mains to your outdoor lighting.

    Soak plants around the house to dilute cleaning products that fall on them, then cover large shrubs and other plants with drop cloths. Trim back any branches hanging near the roof and remove objects such as Christmas lights and stray toys.

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    Asphalt Shingle Roof Cleaning: What Not To Do

    Cleaning a roof is a simple process, but there are easy ways to seriously damage your roof. Therefore, it is prudent to avoid the following when cleaning your roof:

    • Never use a pressure washer.
    • Spray roof from top to bottom. Spraying from bottom to top will force water up and under your shingles.
    • Do not clean in the winter, as you risk having excessive amounts of water freeze on your shingles. Freezing water is expanding water, which means water could travel up and under your shingles.
    • Dont let bleach or vinegar stay on your roof indefinitely. Vinegar or bleach left to sit can permanently disfigure your roof shingles or cause them to degrade prematurely.

    Best Answer: Can You Use Bleach On Metal Roof

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  • Why is my metal roof turning black?
  • If you have tough stains, you can use a very mild dish soap like Ivory along with bleach. In this case mix one gallon of bleach with five gallons of water and add one cup of dish soap. This is effective for mildew and fungal growth. Next clean your panels using a wet cloth, sponge or soft bristled brush.

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    Can You Power Wash Asphalt Shingles

    No. You should never power wash a roof. A garden hose sprayer is the highest pressure a roof shingle should experience no higher than 70 psi. Since pressure washers commonly spray up to and beyond 3000 psi, they should be avoided. Shingle manufacturers even ask that shingles not be walked on, much less pressure washed.

    Using a pressure washer to clean your asphalt shingles can void their warranty and speed up the decay of your shingles. After pressure washing, youll likely notice tons of roof granules in your gutters because youve blasted your shingles too much. Avoid.

    Benefits Of Cleaning Roof Shingles With Bleach

    Bleach is one of the most powerful as well as versatile cleaning agents. With this cleaning solution, you can clean anything like home, tiles, windows, and much more. It is a powerful cleanser that eliminates fungi and algae, as well as the stains that these organisms leave behind. It makes it simple to clean the dirt off of the roofs and the roof overall.

    Cleaning roofs with Bleach can help them last longer by preventing them from degrading over time. This makes it ideal for cleaning many areas of your home at once or when you’ve run from other cleaning agents. You may use a power washer to spray cleaning solution to the roof instead of doing it by hand.

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    Bleach & Water To Clean Your Roof

    Have you noticed black streaksdistracting from the beauty of your roof? These blemishes usually indicate thepresence of blue-green algae. If the stains appear to be lighter in colour, youlikely have green colonies of moss growth.

    Luckily, you can use a solution oflaundry-strength chlorine bleach and water to fight off these stubborn moss oralgae stains:

  • Mix equal parts of water andbleach to create your cleaning solution.
  • Pour the solution into a gardensprayer. Make sure to pick a garden sprayer that can withstand harsh chemicalcompounds.
  • Once youre on the roof, wetthe surface with the sprayer. Allow the solution to sit for 15 to 20 minutes.
  • Scrub the area to attack thestreaks more aggressively. Once you finish, rinse the area using a garden hosewith low pressure.
  • Warning: A bleach solution couldstain your asphalt shingle roof if you apply too much at once or dont wash theliquid off properly.

    Is Roof Wash Bleach Safe For Shingles That Have Been Painted

    How to wash your roofing shingles (Roof Cleaning Tips)

    No! Roof wash bleach will discolour certain types of metals including zinc, copper and aluminium which can cause serious damage to them.

    If you are using this product on an asphalt or tile roof with a paint job, make sure it is at least three years old before using this product as the paint will be more likely to peel off.

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    How To Clean A Metal Roof

    How to clean a metal roof like a PRO!

    By Roof Cleaning Pro – Pierce Parker of

    Cleaning a metal roof can be a very tedious and lengthy process depending on which way you decide to go about it. There are many types of metal roofing types, coatings to work with, and variables involved on every job. Every metal roof cleaning evolution is different with no two being the same ever!

    How Will I Know If A Roof Cleaning Contractor Will Use Bleach On My Roof

    If the Contractor DOES NOT tell you up front that they are NOT using bleach, then they are probably using bleach. Roof cleaning contractors who use bleach often don’t advertise or tell you that they use bleach because they know homeowners don’t want bleach used around their homes. Even when asked directly, some may still deny that they use bleach. Be insistent about your need to know. Many contractors who use bleach use the term “Soft Wash”. Here are some other clues:

    • If they tell you that they follow the shingle manufacturers recommendations, they are using bleach.

    • If they tell you they use sodium hypochlorite , they are using bleach bleach.

    • If they tell you they will water down, cover, or spray your plants during the process, they are using bleach.

    • If they tell you they use of a runoff recovery system to suck up the runoff, they are using bleach.

      If they tell you their ‘soaps’ breakdown into SALT, they are using bleach.

    • Many contractors who use bleach use the term “Soft Wash”.

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    What Are The Safest Chemicals To Clean Roof Tiles

    The vast majority of pressure washers come bundled in a detergent kit to use with high power equipment and low-pressure products like the concentrated Krud Kutter formula multi-purpose house wash that produce large quantities when mixed with water at an appropriate dilution rate. A single biodegradable, non-toxic gallon of Krud Kutters is capable of cleaning nearly 4,000 square feet alone. It will get into roof tile surfaces to lift out unwanted fungi and stains. Krud Kutter is also biodegradable and non-toxic to vegetation and animals.

    Many biodegradable products such as Defy Roof Cleaner concentrate are suitable for roof cleaning as they are far less rough on the tiles. It is recognized as eco-friendly and non-pollutant due to its formulation of detergents in combination with sodium metasilicate with soda ash and sand. Diluting to a 6:1 ratio in one-gallon containers, the product is considered completely harmless to vegetation and rinses away easily with water.

    Some professional roof cleaning contractors recommend using sodium hydroxide based products for tile roof cleaning. They not only act as an effective degreaser but are also considered environmentally friendly and safer roof washing method.

    In essence, regardless of which cleaning solution you decide to use for washing your tile roof, you must check with the manufacturer of the roof and follow their guidelines. Using the mildest chemical possible is key to achieve desired results.

    How To Use Bleach To Clean Other Types Of Roofs

    Roof cleaning and maintenance tips

    Some types of bleach for instance oxygen bleach, can be used to clean other types of roofs. It is environment friendly and it does not damage the color of the roof on wooden roof shingle shakes. This procedure requires the bleach and water

  • Inspect it for algae, moss, mold, mildew, dirt and stains.
  • Dilute a solution of oxygen bleach with water and pour the solution in a pump sprayer,
  • Use a ladder to climb the roof and wet the whole roof with plain water using a garden hose.
  • Spray the affected areas of your roof.
  • Leave the solution on the roof for 15 minutes.
  • Use a garden hose to rinse the roof with water.
  • Repeat the same process until you get all the stains off the roof.
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    Choose The Right Day And Prepare The Area

    Check the weather forecast and choose a cool or overcast day with little to no wind so the spray hits your shingles, not the neighbors. Those conditions allow the cleaning solution to soak deep into the algae colonies without evaporating too quickly.

    Next, repair any loose shingles or flashings, and clean the gutters and downspouts so they can drain freely.

    Then prepare the area by moving lawn furniture and covering vegetation, because youre going to have overspray. Even though the product we chose isnt toxic, the runoff can be pretty ugly. So a little prep work will save you cleanup time later.


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