Your most common options are to either hire a professional roof cleaning contractor, power washer ("pressure washer") or DIY.

Let's talk about the first option. Hiring a professional roof cleaning contractor is the best option when you are not comfortable going up on your roof, inexperienced or you do not have the required tools and safety equipment needed to clean the roof safely and effectively. Most people fall into this camp because the majority of homeowners do not have the capability of cleaning their roof the way a contractor would. Using a pressure washer, low-pressure, will deliver the best moss, mold, algae and lichen removal results but a pressure wand in inexperienced hands can cause serious problems to a roof so consider this valid concern. Before hiring a professional to clean your roof, there are questions you'll want to be prepared to ask. See below.

The DIY option is twofold. We have customers who do many of their own household repairs, including cleaning their own roof. These customers tend to be handy, experienced with other large-scale home improvements. Having a walk-able roof is often the case here, in which case they rent or already have a pressure washer to do the cleaning. Then there is the most common homeowner approach, which is a spray and leave on "let Mother Nature" do the work cleaning where Roof Wash is applied in the Fall and goes to work throughout the Fall and Winter and results are seen in the Spring. This method requires patience but it's popular if you're looking for a DIY method and hiring a professional is not a viable economic option. It's also used as a maintenance method for people who want to stay on top of roof cleaning to ensure it doesn't require drastic measure down the road.

We strongly caution against the use of bleach to clean roofs and home exteriors. In fact, one of the main reasons Wash Safe™ formulas were invented was to address the problem of how to clean a roof without the use of toxic chemicals. Instead of sharing how to clean a roof, we're going to include below the top reasons you should never clean a roof using bleach.

Our mission is to provide the world's best and most environmentally conscientious formula to clean your roof. Our Roof Wash is ideal for cleaning and removing stains from moss, mildew, lichen or black algae on roofing shingles including asphalt, metal, tile, wood shake and rubber roofs. It's an oxygen-based cleaner made to remove dirt, debris and stains from moss, mold, algae and lichen. The oxygen-based formula is safe and effective with an active life of only 4-6 short hours before it biodegrades, making it the safest in the industry.  

Yes, Wash Safe™ offers discounts to contractors through our PRO Program as well as discounts on all pressure washing chemicals ordered by the pallet. Email Info@wash-safe.com to request PRO Program pricing materials.

The way our roof cleaning formula works is for every pound of product used, you will yield up to 1,000 square feet of surface area cleaned. You will increase the product concentration for more dirty, built-up surfaces.

Morning or afternoon is the best time of day to clean your roof. When cleaning your roof, it is best to avoid high heat in the middle of the day.

The best time of the year to clean your roof will vary with every situation. No two roofs are identical and every situation will be different. It depends on what your case. Sometimes an insurance company will demand a roof is cleaned within a number of days or a homeowner is looking to prepare a home for a sale. In these cases, as soon as possible. Otherwise, Spring through Fall works for a total cleaning and Fall is best for a "Maintenance" cleaning. We'll explain the maintenance cleaning more below.

In this instance, you'll let the application dry for an hour or two then repeat the process. This ensures good absorption. Leave the product on for the rain to wash off. After the first significant rainfall, you should see up to an 80% difference. The roof will eventually be 100% clean after. Please keep in mind that because two applications may be necessary, you may need to purchase double to amount of formula so you have enough for both applications.

You can clean your roof naturally (without pressure washing) by letting the rain do it using the Mother Nature method which is explained above. Apply a coat of Roof Wash yearly or bi-yearly. Consider bi-yearly if water is nearby, if there is a lot of shade or trees, if your roof faces north, if your neighbor is infected or if you live in a humid climate. The best time of year for maintenance cleaning is Fall so winter's rain, snow, sleet, etc; can help clean the roof. No spraying necessary —the rain does the work!

Warm is best but you can use cold if you do not have access to warm water. The product works because of the oxygen, it develops when it is mixed with water. The oxygen needs time to warm.

Our products are designed to be applied to a completely dry surface. If the surface is wet, it makes it difficult for the product to adhere to it. It's key that the product adheres to the surface in order to go to work on the moss, mold, algae and lichen. A dry surface is optimal for the products to deliver the best results.

You can only rinse with a pressure washer. Foaming action helps the product to stay on the surface to work. Putting it
through a pressure washer or a soap type siphon dilutes the product .It also does not give it enough time to be activated. The product works because of the oxygen. It develops when it is mixed with water. The oxygen needs time to form.