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Roof Renew Pros

Low Pressure Rinse Cleaning Method

No Bleach, No Phosphates, No Chemicals, Low Pressure = NO DAMAGE

Here are some various ways regarding the four main roof cleaning methods that are currently being used and are available to customers. After reading this you will have a greater understanding of roof cleaning methods in general which will assist you in determining the best roof cleaning.


Low Pressure Roof Cleaning Method


  • The NON-bleach, green, ECO-FRIENDLY, low pressure rinse cleaning method uses a specially formulated buffered product that is safe on all asphalt and fiberglass shingles. It will not harm any landscaping around the home, yet is 100% effective at removing Gloeocapsa-magme, lichen, and moss from shingles. No damaging high pressure is ever used and absolutely NO scrubbing or brushing.


  • FACT: Organic Roof Cleaning without the use of chemicals does NOT void any manufacturer warranty.


  • Our proprietary rinsing system, along with our eco-friendly stain removing products ensures that we clean ALL the algae, lichen and moss under the edge of every shingle.  A
    spray-on leave-on product, splash & dash, or wet & jet method or a system that claims to use no pressure simply does not use an efficient rinse system and cannot COMPLETELY remove the Gloeocapsa-Magma, Lichen, or Moss.


  • With Roof Renew Pros Proven System there is no waiting, no wondering, and no worrying if the stains will really go away. You won’t have to constantly check if that bleach or chlorine soaked red moss will eventually fall off with the rain in a few months. I mean, if you are paying to have your roof cleaned? Don’t you think it should be COMPLETELY cleaned?


  • With Roof Renew Pros System you will come home to, or see immediately before our technician begins to pack up that ALL of the Gloeocapsa-Magma (black streaks), Lichen, and Moss, will be completely GONE! And before we leave, our technicians will make sure that you are happy with the results. 


  • If our method costs more than just spraying bleach & chlorine from the ladder or the ground it’s because our skilled technicians walk the roof, inspecting it first before any work is even started.


  • Making sure there are not holes, lose seals in skylights, no lose shingles, and no issues that could arise from even cleaning your roof.  


  • A NON-bleach, Non Chemical roof cleaning method take the time to actually get on your roof, inspect it, and do the job right using high quality, eco-safe products and state-of-the-art equipment which really clean your roof.  


  • Roof Renew Pros technicians are professionals who make sure they clean every square inch of your roof without damaging your shingles or your landscaping. We also offer our stain preventative program that will provide you with the option of having a long lasting lifetime guarantee against roof stains by participating in the Annual Stain Protection.

Bleach Roof Cleaning Method

Using Bleach can corrode roof fixtures such as flashing, underlayments valleys, and boots. Consumer Reports® warns NOT to use the chlorine-bleach solution described by the Asphalt Roofing Manufacturers Association due to its damaging effects.

But how will I know if a roof cleaning contractor will be spraying bleach on my home?


  • Listen if the Contractor DOES NOT tell you up front that they are NOT using bleach? Then the possibility of them using the bleach is highly likely. A lot of Roof cleaning contractors will NOT upfront tell you that they are using bleach because of the they KNOW the damage it can cause. 


  • They may tell you that it’s ok to use per roof shingle manufacturers. Some say you can use 3% that is the equivalent of washing out your bathroom sink, not 50% bleach, 50% chlorine, and 25% detergent & water! It’s all in the wording. And why wouldn’t roof shingle manufacturers want you to have your roof having to be replaced a little earlier than 10 years?


  • Shingles have to be purchased from somewhere right? Roof cleaning contractors know that smart homeowners know about the toxins in bleach, and don’t want it around their families. But beware even some when asked directly, some may still deny that they use bleach.


  • Be insistent about your need to know. Here are some clues: If they tell you that they use no pressure and that they follow the shingle manufacturers (ARMA) recommendations, then they are using bleach.  


  • Many contractors who use bleach will use the term "Soft Wash" Or “Gentle Wash” If they tell you they are using sodium hypochlorite – beware sodium hypochlorite is the chemical name for bleach.


  • Perhaps they may mention that they are using SH, well my friends SH is the shortened name for Sodium Hypochlorite which is? BLEACH!  Some even mix fragrance in with the bleach to mask the smell so you won't know it's bleach.


  • It’s hard for you to know everything that is used in the industry as a homeowner not in the field. So? We’ve helped you.  Ask these questions like this: "How do you intend on protecting my plants while cleaning my roof?"  If you get any answer other than "We don't need to protect your plants because our product does not harm plants, this is indicative that harmful chemicals will and are being used. Let’s say they try to ease your mind with "We will wet down your plants before, during, and after our treatment to protect them," you can bet your bottom dollar that there is nothing good being sprayed on your property, because bleach or another chemical are being used.


  • Another indicator that bleach, chlorine, or lye is being used is the use of a runoff recovery system which attempts to suck up all the toxic runoff during the treatment into a containment vessel. Sometimes plastic garbage bags are used or PVC piping coming from the gutters into the street away from the grass. 


  • Beware if you are told that your plants will be covered during the roof cleaning process or sprayed with a plant protectant, that is a clear sign that your plants and landscape are in danger.


  • In the world of Roof cleaning many contractors who utilize bleach tend to concoct or create their own mix if they are using bleach. They mix significantly strengthened bleach with a recipe of varied chemicals such as phosphates, dish detergents, assorted surfactants, laundry detergents and then top it off with some odor-masking scents to hide the smell of the main source they are using BLEACH! These chemical concoctions are not stable, and call into question the knowledge that these technicians actually have about the proper techniques of roof cleaning, and the safety of the people around them while spraying these chemicals around homes, people, and our environment in which we live.  — Centers for Disease Control

Splash & Dash Method


This is one of my personal favorites, and one that really upsets me because it really takes advantage of people’s intelligence levels, as well as their wallets. Some cleaning contractors will bid a very low price, and spray a chemical on your roof and tell you to wait for weeks or months to see the results. The rain will eventually take it off. Go to Wikipedia and look up Lichen on roofs or moss on roofs. You will see these have roots that attach into the roof shingles. Do you really think the rain is going to wash these away?  People are attracted to the low price tag, and want to believe that they are being told the truth. The fact is any product which do not require rinsing, but depend on the rain to wash away the roof-attacking organisms this method is designed so that the contractor does not have to get on a wet roof or use special equipment to rinse the roof. These products often take repeated applications to achieve even marginal results. Some roof cleaning businesses actually use this consumer grade product and charge you professional rates for it. These people are known as Splash and Dash’ or Wet & Jet” They don’t even check the roof before they do the job!

High Pressure Power Method

Let’s face it your roof wasn’t designed to withstand 4,000 pounds of pressure. High-pressure washing willetch the surface of your roof making it faded and more porous. When your roof is more porous it takes longer to dry after rains and you get more mildew growth in shorter periods of time. This means more cleanings over the life of the roof, which results in leaks and ultimately shortens the life of your roof. Most roofs come with 25-35 year warranties. Pressure washing destroys roofs by loosening the limestone granules embedded in the asphalt shingles. You need these granules to reflect the sun to keep utility costs down, as well as to protect the asphalt in the shingle from drying out and deteriorating at a faster pace. Our Roof Renew Pros low pressure organic system safely removes mildew without damaging your roof or rinsing harmful chemicals onto your property.

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