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How Much Does It Cost To Clean A Shingle Roof

A shingle roof is a popular choice for many homeowners, and this is because it is relatively inexpensive and easy to install. However, shingle roofs can become dirty and covered with moss buildup over time, affecting their appearance and efficiency.

The cost of cleaning a shingle roof can vary widely depending on several factors. These may include the size of the top, the type of debris, and the property's location. In this article, we will look at the cost of professional roof cleaning services. Also, we'll go over the factors that can affect the price and the signs that tell you need your roof cleaned.

How Much Does It Cost To Clean A Shingle Roof

Factors Affecting the Cost Of Cleaning Asphalt Shingle Roofs

Below are the factors that can affect the cost of cleaning asphalt shingles.

1. Roof Size

The roof size is one of the main factors affecting roof cleaning costs. Roofs are available in various forms, sizes, and slopes, and a large, steep roof will cost more to clean than a smaller, flattened roof.

Likewise, the time and labor spent washing the roof are proportional to its size. So while comparing pricing bids, remember the durability of the task. The greater the roof cleaning project, the higher the cost.

Furthermore, if you're unsure about your roof size, there is a general formula to calculate it;

1.5 x square footage of home = Square footage of roof

Once you've determined the approximate roof size, you may compute the total cost of roof cleaning based on the common range of $0.15 to $0.68 per square foot or the average rate of $0.41 per square foot.

2. Roof Cleaning Method

There are several roof cleaning methods, each with a different price. The material and type of moss buildup will determine the best approach to cleaning your roof.

For instance, a flat rubber roof will require a different style of cleaning than asphalt shingles. And the demands of a roof with a heavy covering of lichen or moss will differ from those of a top with only dirt, leaves, and loose materials. Pressure washing or soft washing is less costly than a cleaning method like chemical wash or hand scrubbing.

The average cost for Chemical wash is $0.20–$0.30 per square foot. Likewise, the price for high-pressure wash and low-pressure wash is between $0.20–$0.70 and 0.30–$0.70 per square foot. Lastly, soft wash costs $0.30–$0.75 per square foot.

3. Roof Condition

A roof that is in good condition and requires only light cleaning will generally cost less to clean than a roof that is in poor condition and needs extensive cleaning. There may be a need for specialized cleaning methods if a roof has severe mold or mildew. Likewise, it will take your contractors far longer to clean the roof if you haven't cleaned it for a long time.

Factors such as the height of the roof, slope, and accessibility of the roof, can also affect the roof cleaning cost. Roof cleaning companies will offer you a precise estimate of how long the job will take to complete and the most effective cleaning method for moss removal.

4. If Any Repair Is Required

Repairing an asphalt shingle roof can increase the cost of cleaning it. This is because any repair that needs to be made may require specialized equipment or materials. And this can add to the overall cost. It's also possible that the need for repairs may be discovered during the cleaning process, which would add unexpected costs.

Roof Cleaning Costs: Types Of Roofing Material

Roof Cleaning Costs: Types Of Roofing Material

Roof cleaning prices can vary depending on the type of roofing material. Thus, different roofing materials need other cleaning methods. And the best cleaning method depends on the kind of material. Likewise, a roofing material like wood shingles needs gentler soft washing methods.

Here are a few examples of common roof materials and their associated cleaning cost:

1. Metal Roof Cleaning Costs

The standard cost for metal roof cleaning is between $0.20 and $0.70 per square foot. Metal roofs can endure the mighty blast of a high-pressure wash, and this is because metal roofs are very sturdy and resilient. This cleans the surface, getting rid of most of the moss and lichen, as well as dirt and detritus.

A metal roof can withstand pressure cleaning with hot water, and it will be more effective in clearing dirt, moss, and other particles from the roof's surface.

2. Tile Roof Cleaning Costs

The overall cost of this tile roof cleaning is between $0.30 and $0.75 per square foot. Ceramic and clay tiles are sensitive materials that do not hold up well to high-pressure cleanings. The ideal solution is a mild wash that offers a complete yet delicate clean, and it gets rid of moss and algae without breaking, or any form of roof damage.

3. Tar And Gravel Roof

Most professional roof cleaning services often use bleach on tar and gravel roofs. The average price per square foot for a chemical wash is between $0.20 and $0.30. A chemical wash that removes mold and mildew patches works best on a tar and gravel roof.

Besides that, many roof cleaning services use plastic rakes or leaf blowers to get rid of any moss growth. The surface can then undergo a moss-prevention treatment to guarantee that it is spotless and in excellent condition.

4. Clay Roof Cleaning Cost

Soft wash cleaning costs for clay roofs range from $0.30 to $0.75 per square foot. A gentle wash works better for this material than a harsh one. Since clay lasts for many decades when properly maintained, it is essential to choose the best cleaning solution.

After cleaning, you might as well buff the clay. The reason for this is to restore the roof's appearance that was harmed during the cleaning process.

5. Wood Roof Cleaning Cost

The average cost to clean wood roofs ranges from $0.30 to $0.70 per square foot. One disadvantage of this material is that it sometimes fails to withstand high-pressure water blasts.

Therefore, the ideal cleaning solution is a low-pressure wash. Roof cleaning professionals use carefully chosen chemical mixtures that are kind to wood yet tough on moss. Lichen, moss, and other detritus can be eliminated using this method.

6. Asphalt Shingle Roof Cleaning Cost

Soft washing, which costs between $0.30 and $0.75 per square foot, thoroughly cleans the surface without endangering the tiles. A mild wash is the finest cleaning solution if your roof is of asphalt shingles.

Since they are soft and flexible, you must handle asphalt shingles carefully. A high-pressure wash typically results in issues like roof damage or shingle loosening. Moss and algae are frequent on this material. Thus, you need to clean your own roof regularly.

Shingle Roof Washing Cost By Method

Below are the common roof cleaning methods available and their cost;

1. Roof Power Washing Cost

Power washing is an excellent roof cleaning method to remove dirt. But it is not always an appropriate option for your property. If not done well, the pressure might remove protective coatings, even damage the roof material, cause leakages, and lead to roof replacement.

Roof cleaning with a power washer costs between $0.20 and $0.70 per square foot. The power washing method uses high-pressure jets of extremely hot water, and heat improves its ability to remove any debris attached to the roof. Also, it may act as a roof moss removal when you direct massive amounts of hot water at it.

If you're looking for a professional roof cleaning contractor, Roof Cleaning San Antonio is your best bet!

2. Roof Soft Washing Cost

Soft wash is a popular gentle method used in roof cleaning. Soft washing is akin to low-pressure wash in that it mixes pressurized water and chemicals. But the difference is that soft washing uses a softer stream of water and a specific chemical mixture. It sometimes contains bleach to remove algae, moss, mildew, germs, and certain stains.

Soft washing costs more than pressure washing. And the average cost for soft washing ranges from $0.30 to $0.75 per square foot. This is because it needs more labor-intensive treatments, including using low-pressure hoses, scrub brushes, and cleaning solutions like bleach to lose debris, algae, moss, mold, and germs.

However, the chemicals most roof cleaning companies use for a soft wash may harm the roof over time.

3. Roof Chemical Wash Cost

If the major issue with your roof is moss, algae, or lichen, a chemical wash may be the most practical and cost-effective solution for you. Chemical roof cleaning costs roughly $0.20 to $0.30 per square foot. With this method, you will no longer find living organisms on it.

Chemical wash does not use a pressured stream of water, which might be helpful or harmful. High-pressure washing can harm some roofing materials. Yet, chemical washes are mild enough for almost any roof. However, without that pressure leaves, thorns, or caked-on filth may not remove.

Pressure Washing Roof Cleaning Cost (Low Pressure or High Pressure)

4. Low-Pressure Washing

Low-pressure power washing is a psi of less than 1,000. This means it is far less abrasive on your roof material and safe for usage on a broader range of roof kinds. Because low-pressure power washing is less harmful than high-pressure power washing, you may use it safely on a wider range of roof materials.

Low-pressure power washing can still invalidate your roof warranty. Plus, it has the potential to harm asphalt, clay, and slate roofs. However, when performed by a skilled roof washer, low-pressure power cleaning may be safe on most roof types.

Consider low-pressure wash to be a nice balance between chemical and high-pressure washing. It is more costly than both. And the average cost by most roof cleaners ranges from $0.30 to $0.70 per square foot.

Low-pressure washing is gentler than regular power washing. It makes it suitable for some shingle roofs yet powerful enough to remove dirt. This cleaning method also uses mild chemicals for roof moss removal and other plant growth.

5. High-Pressure Washing

Pressure washing roofs costs between $0.20 and $0.70 per square foot. Pressure washing is the most popular and widely used method of roof cleaning. It entails blasting high-pressure unheated water with a pressure washer to remove debris, grime, stains, and some moss and algae. It is less expensive than some more complex procedures. Furthermore, the forceful stream blows away all types of filth and grime.

On the other hand, the high-pressure nature of this cleaning procedure may harm weak tiles or shingles. Furthermore, because it does not remove moss at its core, there may be a need for a chemical-based cleaning if your roof has a lot of plant life.

High-pressure wash may also damage the clay roof and remove the tiles' protective coating. Thereby making them more porous, promoting roof leaks, cracking roof tiles, and nullifying your roof warranty. Regular pressure washing is not an option for roofs with moss buildup. This is because it does not destroy the moss.

Hence, we do not recommend standard pressure washing for roofs with asphalt shingles, slate shingles, wood shakes, or any tile.

How Much Does It Cost To Pressure-Wash Or Power-Wash A Shingle Roof?

On average, homeowners can expect to pay between $300 and $1,000 to have a shingle roof pressure-washed or power-washed. However, some professional roof cleaning companies may charge more or less depending on the cleaning process. It's always a good idea to get a few quotes from different service providers to compare prices and ensure that you get a fair price for the work.

Shingle Roof Moss Removal Cost And Prevention

Moss is one of the most common problems that homeowners face on their roofs. Small amounts of it can appear harmless. But larger amounts can increase and cause harm, adding moisture to your roof that might deteriorate tiles. It could even spill over into the drainage and block it.

Moss absorbs heat, which may impact your annual energy costs. The most common roof cleaning method, such as chemical cleans and mild washes include moss removal. It implies that as long as you pick the proper type of cleaning, you may not spend extra on moss removal. Roof moss removal costs roughly $1,200 for a 1,700-square-foot roof. The price per square foot for this is between $0.20 and $0.70.

The sooner you remove moss, the better. Many experts advise calling a professional roof cleaning company as soon as you find any amount of moss on the surface. Others argue that minor levels of moss don't require immediate attention. But in wet locations in particular, the longer you leave moss alone, the more it will spread.

Therefore, it is best to take quick action and reduce the danger. Moss removal is always labor-intensive. It may be easy to manually remove the moss from some roofs. Yet even the best equipment may cause harm to some roofing materials.

As an alternative, there are eco-friendly roof moss removal products. They are baking soda, dawn dish soap, vinegar, or a commercial roof cleaner approved by the U.S. Environmental Protection Agency (EPA) Though, they are a bit expensive.

Roof Moss Prevention

Moss removal is time-consuming, expensive, and possibly harmful to the environment. Preventing roof moss from growing is a better option than waiting for it to grow on your roof and searching for roof cleaning services. There are certain things you can take to lessen the risk of roof moss and save money.

To begin, avoid growing trees near your home. Trees provide shade and can improve your home's energy efficiency. Nevertheless, the shade increases the possibility of roof moss formation.

Furthermore, get professional roof cleaners to clean your roof at least once a year. Moss forms where organic material already exists. Regular roof cleaning removes tree debris and other organic waste.

Putting metal roofing strips is an alternative. Though, it is not eco-friendly. Most of these strips include copper or zinc, gently washed away and curing your roof whenever it rains. Because these metals can be detrimental to the environment, we don't suggest them unless you have serious roof moss problems.

Also, consider algae-resistant roof shingles. These shingles function like metal strips because they are infused with zinc or copper. This is by far the most expensive option since it necessitates the installation of a new roof. Even though it is not environmentally friendly, it is highly effective.

Lastly, you can keep up with your cleaning. All you need do is apply a natural degreaser to your roof and wash it off with a garden hose once a season. This will aid in the removal of organic debris that might cause moss buildup. Sometimes, you don't even need to go up on your roof to apply these chemicals.

Shingle Roof Cleaning And Coating Cost

The cost to coat a roof varies between $0.55 and $4.50 per square foot. However, this depends on the type of coating you pick and the form of your roof. For example, a level roof is more accessible for roofers to work on and has reduced labor expenses. But a steeper roof has higher labor costs.

There are numerous benefits to coating your roof with silicone or another sealant. One major perk is that it keeps stopping leaks. Also, it lowers the indoor temperature, thereby lowering AC expenses. It also prevents metal roofs from rusting.

Besides, roof coating makes it waterproof. And specific layers also make it heat-reflective, flame-resistant, and corrosion-resistant. With all these benefits, coated roofs can endure for several years longer than non-coated roofs. Coating costs vary depending on the type of coating used, ranging from $0.50 to $5 per square foot. Silicone is the greatest roof sealer, and it is also the most costly.

Signs That You Need to Have Your Shingle Roof Cleaned

Several signs indicate that it is time to clean your roof. These signs will help you maintain and protect your roof to avoid roof repairs in the future.

1. Visible Plant Growth

Plants like moss and lichen can grow on shingles and dig into them. Each root produces a tiny path for water to enter and eventually pass through the shingle. Sometimes, damaging the seal that holds the tiles together. If uncontrolled, it will result in leakage and call for roof repairs.

Since moss loves storing water, it will create an ideal habitat for the growth of black algae. Remove moss from your roof to keep it looking nice and functioning.

2. It Hasn't Been cleaned In Six Months

Debris and grime on your roof may not always look visible. But if you haven't washed it for about six months, you can bet they're there. They silently cause harm to your shingles and roof structure. Hence, you must have your roof cleaned on a regular basis.

3. Clogged Gutters

The main goal of a gutter system is to gather water from the roof and create a path for it to safely disperse into the ground. It preserves the home's roof, siding, and structure. If you have blocked gutters, clear your roof. If your drains are blocked, you risk having more problems than a leaking roof.

An overflowing drainage system will enable water to run down the siding and onto the foundation. Blocked drains can result in foundational issues, damage to the walls and ceiling, and infestations of insects. If you notice that your gutters are blocked, book an appointment with a roof cleaning contractor to get your roof cleaned.

4. Discoloration And Dirty Roof

Moss and black streaks may not be visible on your roof. But they can discolor due to dirt and grime accumulation. Regular roof cleaning maintains the color fresh and makes it appear as good as new.

5. Roof Shingles Start Shifting

It's possible for your roof shingles to separate from the surface components when leaves, dirt, mildew, and moss build up. The shifting of shingles exposes your roof to water damage and leaks. Roof cleaning removes material that has accumulated beneath the shingles.


Is Roof Cleaning Necessary?

Cleaning your roofing materials is essential, and this is because it avoids moisture damage which may happen if you let moss grow on your shingles for an extended period. Also, dirt and grime can cause shingles to break from the roof deck, exposing weak areas of the structure.

Does Cleaning Your Roof Damage It?

Cleaning a roof can potentially cause damage if it is not done well. The use of harsh chemicals or high-pressure water can damage shingles. Also and using the wrong techniques can cause leaks or other issues.

It is essential to use a soft-bristled brush and mild detergent when cleaning a roof and to avoid using high-pressure water. Additionally, it is crucial to be aware of any potential hazards, such as power lines or steep angles, and to take necessary safety precautions. It is best to hire a professional roof cleaning contractor to avoid roof repair.

How Do I Know When To Replace Roof Flashing Or Shingles vs. Washing?

To determine if you need roof repairs or simply replacement, you should inspect it for signs of wear and damage. These are the signs if you see missing or cracked shingles or if your flashing is bent or missing.

On the other hand, if your roof is still new and in good condition but has become dirty or discolored, a good cleaning may be all it needs. If you are unsure, it is best to consult a professional roof cleaner for an inspection and advise on the best course of action.

How Much Does Roof And Gutter Cleaning Cost?

The cost of roof and gutter cleaning can vary depending on several factors, including the size of the roof, the type of roofing material, and the location of the property. On average, roof cleaning cost and gutter cleaning range from $100 to $400 for a standard-sized single-story home.

However, getting a quote from a roofing contractor in your area is best to get a more accurate estimate for your specific needs.

Roof Cleaning Costs: DIY vs. Hiring Professional Roof Cleaners

DIY roof cleaning costs will vary depending on the materials and tools required for the specific type of roof you have and the size of your roof. Generally, DIY roof cleaning will be lower than hiring roof cleaners.

However, hiring a professional roof cleaning service can be more efficient and may result in a better overall cleaning job. Additionally, roof experts often have the right equipment and training to clean a roof safely. Whereas trying to do it yourself could result in injury or damage to your roof. It's important to weigh the roof cleaning cost and risks before deciding whether to clean the roof yourself or hire roof cleaners.

You can can count on us to do and excellent job on your roof. We know the best methods and materials to use to avoid harming your roofing system. Contact us today for all of your roof cleaning needs!

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