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How To Pressure Wash A Shingle Roof

With Power Comes Responsibility

Roof Cleaning

Keep your eyes open and watch where you’re spraying. Don’t directly spray light fixtures, windows, vents, or eaves. The high pressure of the water could cause serious damage when aimed poorly.Once you’re done, move onto the next pressure washing adventure. Clean your decking, strip off old paint, or even clean your sidewalks.

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Not Inspecting The Roof The Following Week

When cleaning a roof, often the results are not immediate. If there is lichen and moss on the roof, what happens is when we apply the cleaning solution the moss and lichen turn white and die while still remaining on the roof. In the following days, they will dry up and crumble off the roof.

In order to make sure that we cleaned the roof thoroughly, we always check in with you and the house in a couple of days. This follow-up is something that will continue to separate us from the roof cleaning contractors who just clean and leave.

Electric Vs Gas Power Washer

You can use either a gas or an electric pressure washer. Choose from the following PSI for the job at hand.

  • Light Duty up to 1900 PSI – Ideal for washing cars, trucks, motorcycles, boats, outdoor patio furniture, and other light jobs.
  • Medium Duty 2000 to 2800 PSI – Ideal for removing and cleaning dirt or mold from your homes siding, fences, decks, and patios.
  • Heavy Duty More than 2800 PSI – Ideal for erasing driveway or sidewalk stains, cleaning second-story exteriors and preparing surfaces for paint.

Gas Vs. Electric Pressure Washers

Type
  • Less expensive than gas models, with cheaper models ranging from $57 to $317
  • To get the power you need, they are costly
  • Have to be plugged in unless they are chargeable
  • A 3000 PSI 3.9 GPM commercial power washer … for use in 18-wheeler and big rig washing stations, heavy equipment operator sales and service, and other industries with big machinery can cost about $4,400, if purchasing equipment alone.
Gas

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The Benefits Of Removing Moss

While you may not necessarily have to remove the moss-covered shingles before a new roof installation, you should consider it. There are many benefits of removing the moss-covered shingles, including:

  • Reduce long-term costs: By removing the old roof, you keep the opportunity to double-up roof layers during your next roof replacement. The maximum layers of shingles allowed to be on the roof, according to most building codes, are two. So, once you use this strategy, you must tear off both roof surfaces during your next roof replacement.
  • Maintain home value: Are you planning on selling your home soon? A properly replaced roof is more likely to appeal to potential buyers, while a poorly replaced roof may negatively affect your home value.
  • Avoid the risk of damage: You can avoid all of the risks listed earlier in this article by simply removing all of the moss-covered shingles.

Can You Pressure Wash Slate Roof

Tips For Roof Installation When You Are Planning To Change ...

Slate Shingle

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People also ask, how do you clean slate shingles?

If you have moss, mold or rust spots that are reachable, gently scrub them with a medium-stiff brush and a solution of 1/4 cup general household cleaner to one gallon of water. Wash away soap residue and remaining bits with a gentle spray from the garden hose.

can you power wash a metal roof? When you clean a metal roof, it’s a lot different than cleaning tile or asphalt roof. When you clean metal, you can use light pressure if necessary, and you can use a hot water pressure washer. You can also simply wash it with detergent, depending on how accessible the roof is and what its pitch is.

Likewise, is it safe to power wash your roof?

Pressure washing is very effective, but may be best for metal or concrete roofs. There is a chance that the pressurized water could damage your shingles. Of course, some chemicals can harm your roof as well, and the runoff could cause problems with your landscape or parts of your home.

Can you power wash slate?

In most cases we will power wash the slate or flagstone to remove the layer of dirt and grime. We use gentle environmentally friendly detergent to remove the stains and bring back the original color of the stone.

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Is Pressure Washing The Right Method To Use For Roof Washing

Pressure washing for the exterior of your home in the Bloomington area isn’t a secret. Wise homeowners not only know about it, but they also make it a point to schedule their service once a year.

What does often get neglected is the most essential part of the home – the rooftop. Scheduling a separate service for roof washing is crucial for taking care of your home’s first line of defense against the elements.

Pressure washing may be ideal for concrete, but it’s not the best approach for cleaning more delicate materials, like asphalt shingles. Before you hire a power washing company that will blast away your shingles along with the dirt, it’s time to learn a little something about alternative methods.

S You Shouldnt Use To Remove Moss From A Roof

Unfortunately, there is a lot of bad advice out there about how to remove moss. While these methods may be effective at removing moss, they may also damage shingles in the process. We dont recommend you try to remove your moss by:

  • Scrubbing: You may be tempted to scrub the moss off the shingles because moss grips shingles quite strongly. However, scrubbing is likely to damage the asphalt shingles and remove their granules.
  • Pressure washing: Pressure washers can be very strong and certainly strong enough to break a shingles adhesive and lift it up. They also can strip asphalt shingles of their granule surface, which can ruin their performance and destroy their color. Any amount of pressure washing can cause serious problems with the roof, including major leaks. Never use a pressure washer or a pressurized stream of water on your roof.
  • Using harsh chemicals: High concentrations of bleach and other chemicals may do permanent damage to the shingles, increasing your risk for leaks.

Using any of these methods may also void your limited warranty on the roof. If youre in doubt about the safety or effectiveness of a moss removal method you want to try, consult with a professional roofer. A handful of roofers in areas where moss infections are common do specialize in removing moss. They may be able to do the work for you and, if not, may have recommendations about what your specific roof can benefit from.

Also Check: What Are Metal Roofs Made Of

Don’t Wait Until Algae And Other Debris Are Visible To Schedule Roof Washing

A homeowner should never wait until they see lines of algae or moss along roofing shingles or roof edges to schedule power washing for their home. Note why that is, and when you should have your homes roof washed:

  • Algae, moss, mold, and mildew grow best in damp, dark spaces, away from air and sunlight. For a residential roof, these spaces are typically under and around roofing tiles and shingles, in areas unseen from below or during casual visual inspection.
  • Once algae and other such debris begin to form, they will grow and spread, dislodging and softening roofing tiles. The more humid the environment, the faster these contaminants will increase so that a roof then suffers quite a bit of damage in a short amount of time.
  • Consistent washing of a roof will remove wet leaves, twigs, seeds, and other debris that can cause algae, mold, and other contaminants to grow in the first place! Regular power washing can then prevent damage to the roof and ensure it always looks its best.
  • Washing a roof after a particularly stormy time of the year will remove all storm residue and debris that can lead to mold, moss, and other buildups.

Can You Pressure Wash A Roof

NorthStar Soft Wash System Training Video: How to Setup to Soft Wash Roof, Siding, Fences + More

Pressure washing is very effective, but may be best for metal or concrete roofs. There is a chance that the pressurized water could damage your shingles. Of course, some chemicals can harm your roof as well, and the runoff could cause problems with your landscape or parts of your home.

Consequently, what is the best way to clean a roof?

The most effective method of cleaning algae and moss from a roof is with a 50:50 mix of laundry strength liquid chlorine bleach and water. Apply with a sprayer and allow the solution to dwell on the roof surface for 15 to 20 minutes, and then rinse thoroughly with low pressure water.

Beside above, is Roof Cleaning a good idea? Generally, it is a good idea to get your roof cleaned by professionals once a year. This is often enough to where if problems develop, they can be caught early on. If you have a roof that is in good shape or was just recently installed, then you may only need a roof cleaning once every two years or so.

In this manner, does cleaning your roof damage it?

Roof Cleaning is a Regular Part of Roof CareNeglecting your roof can lead to creeping damage that may be expensive to repair and could cause loss of personal property from intrusion of water and mold. Doing at least an annual cleaning and inspection will go a long way to prevent long-term issues with your roof.

Will bleach hurt my roof?

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What Is The Best Way To Clean A Metal Roof

This question is a very important one, but of course with every roof job and all the different variables that can be involved, every roof cleaning can be different! We typically create a CUSTOMER PLAN OF ACTION from preparation, protection, cleaning, clean-up & post-cleaning. This next paragraph will explain determining whether your roof is coated or un-coated.

If Your Home Does Not Have Gutters

First, we spray all areas that will get roof cleaning solution runoff with fresh water. Both before the roof cleaning and afterwards to dilute the cleaning solution. We will lay down gypsum pellets in your yard where the runoff will occur as well. Gypsum pellets are completely safe for your plants and act to neutralize the harmful effects of our cleaning solutions. We also put tarps over any plants and landscaping to ensure protection.

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Power Washing Wrecks Roofs

Roof cleaning by power washing has destroyed a lot of roofs. The way they damage roofs while cleaning them is deceptive, because from the ground, the roof may look beautiful. Moss free, certainly. Lots of debris and growths are removed. Along with that, important ingredients of the roofing material are taken away too! Ouch! Do you want to invest in something that makes your roof look good but speeds its destruction? Then choose power washing. The high pressure removes the important uv protection, the granulation from asphalt roofs. This pressurized water system cleans away marginal wood cells on a cedar roof, and exposes all the flaws, leaving behind a trail that must be repaired properly, or your roof is doomed. The high pressure water removes important and valuable resin from cedar roofs too. The resin is the cedar shake preservative. On concrete roofs, it encourages chipping of the surface. Power washers have heavy hoses that are dragged around your roof. They do their own wear and tear, as do the boots of the workers as they grind over every square foot of your roof. Beware, also, water, at high force, being pushed in the wrong direction through corners and edges of protrusions, where the roof is the most vulnerable.

Beware claims these groups make, of super long life guaranteed, well worth the thousands of dollars they charge. If it sounds too good to be true, it probably is.

Pressure Washing Concrete Prices

Soft Wash Roof Cleaning  Phoenix Clean

A simple pressure washing of concrete runs from $0.08 to $0.20 per square foot. It goes up from thereif the pavement is greasy and requires power washing plus a concrete detergent, it will cost $0.25 to $0.35 per square foot. The concrete detergent breaks up the dirt, grease, and oil and makes the pressure wash easier and faster. To clean your concrete curbs, it costs $0.25 to $0.60 per linear foot because it requires more fine-tune cleaning with a turbo nozzle.

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Average House Pressure Washing Prices

Average house power washing prices range from $0.15 to $0.25 per square foot which is great for cleaning mildew off the stucco. Rates depend on what the house is made of or sided with, and how much of the home exterior you want to be washed. Add more for windowsills and deeper cleaning on other features. It will also cost more if access to the wall is difficult because of flowerbeds, rockeries, walls, etc.

How Cr Tests Pressure Washers

We measure how much pressure each model can produce, in pounds per square inch, giving a higher score to those with a higher psi. Then we fire up each pressure washer and use it to strip paint from painted plastic panels, timing how long it takes. Models with a higher pressure output tend to perform better on this test.

We also measure noise, and you should know that almost all pressure washers are loud enough to require hearing protection. Finally, we size up ease of use by evaluating basics like the process of adding fuel and noting features that improve the experience.

Regardless of performance, its CRs policy to recommend only models that do not include a 0-degree nozzle, which we believe poses an unnecessary safety risk to users and bystanders.

Read on to find out whether it makes sense to pressure-wash your deck, siding, roof, car, or driveway.

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What Causes Black Streaks On Roof Shingles

Diagnosing what treatment to use when roof cleaning is as simple as taking a walk through the property with a professional. A professional will be able to take a look into what is actually growing on your roof, and will know the correct application in order to treat the algae and the amount of time it will take to remove it.

Lets talk about the two types of algae we come in contact with on a daily basis.

Measures To Be Taken While Pressure Washing

Angie’s List Roof Cleaning

While pressure washing your roof, always keep in mind that the power washers output pressure must be controlled accurately. Otherwise, you may end up damaging your roof severely. Another thing to pay attention to is the nozzle size of the washer. If the nozzle size is different than what is required, it can damage your roof. Also, make sure that spraying should be done from the top of the roof and not underneath.

In addition to these, pressure washing your roof may compromise the sealants used in vents, flashing, solar panels, skylights, chimneys, etc. and may ultimately lead to roof leaks. Make sure that the water temperature is not too hot and the angle of the spray is correct. Otherwise, your roof might get damaged.

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Extend The Life Of Your Roof With No

The algae, Gloeocapsa magma, feed on the limestone in and around the shingles on your roof. A roof professionally cleaned will not just look like new, but also prevent you from paying thousands of dollars for an expensive and time-consuming replacement roof.

Dont make the mistake of counting on the cold winter months of New England to kill the algae. After all, this particular variety can survive in low temperatures and continue to wreak havoc on your roof all year long.

Can You Pressure Wash Asphalt Shingles

Taking care of the asphalt shingles on your roof is more than a choreits a duty. Your roof supplies you with the most fundamental of human needs: shelter. So, as a homeowner, it becomes a matter of pride and responsibility to care for the feature that cares for you.

Streaking, discoloration, and growth are common ailments that plague a typical roof, and left neglected, these issues can chip away at your shingles integrity. You might be among the vast collective of homeowners with a power washer stowed away in your garage, so you wonder, can you care for your roof by pressure washing its shingles?

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Q: So How Can The Shingles Be Cleaned Without Causing Damage

A: By using the No-pressure methods recommended by the shingle manufacturers themselves. The Asphalt Roofing Manufacturers Association, GAF, and Owens Corning have all suggested cleaning methods and solutions to clean roofs suffering from roof algae. They recommend using a No-pressure chemical application.

The Short Answer Is No

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When you search this very same question, youll see the Internet shout back with words like never and dont. The response isnt wrong. Even with growth forming on your roofs surface, you should not break out the pressure washer on your asphalt shingles.

The reason is simple: youll do more harm than good. It takes a professional to clean a roof, and they dont employ the use of high-pressure equipment. If a pressure washer is used, the professional is trained to use minimal pressure or specialized cleaning tools to remove algae colonies, moss, and other growth from asphalt shingles. Its not a job you should undertake yourself.

What happens if you do pressure wash asphalt shingles? You could blast off their protective coating, as most modern roofing shingles are treated for optimal effectiveness against algae resistance and/or UV reflection. If you aim the pressure washer at an incorrect angle , the water could jet beneath the shingles, which could lead to water damage.

Water damage is a big no-no, especially in your roofing system because it means the damage doesnt quite stop there. The structure is at risk if the shingles are compromised, and for you that means wildly expensive repairs in your future.

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