If you have concerns about this formula on a particular material, test a small spot for several days to see if there are any adverse reactions before proceeding with a full treatment. Pets and children should be kept away from the treated surface until the application has dried. Spray and Forget Outdoor Cleaner should not be used on surfaces that are designed for eating or food preparation. The trigger can be moved about freely and is attached to the bottle by a flexible tube, which allows the solution to be sprayed. For particularly stubborn stains and discolorations, beach-based cleaners might be the way to go. They’re so strong, in fact, that you don’t even need to scrub or rinse the roof down for them to work. Simply apply them to the roof and let them dry. The bleach will eat through the dirt and grime all on its own.

Bob Vila has been America’s Handyman since 1979. As the host of beloved and groundbreaking TV series, including This Old House and Bob Vila’s Home Again, he popularized and became synonymous with “do it yourself” home improvement. Tougher materials, like asphalt, metal, or slate roofs, can take much stronger chemicals. You’ll be able to use bleach or chemical-based cleaners without worrying about what they’ll do to your roof’s finish. Chemical Composition Don’t rush out and set up the ladder quite yet. You first need to educate yourself on the different types of roof cleaners available. They all work a little differently, and some are much harsher on the environment than others. It’s important to do a little research before you choose the best roof cleaner for your needs. Bleach-BasedYou can apply this concentrate at full strength or dilute it for lighter stains. The application requires spraying the roof surface and letting it break down the stain. Once the stain disappears, rinse the roof thoroughly. If the stain remains after the roof dries, another application of Star Brite should remove the rest of the mildew. This outdoor cleaner is already mixed and ready to go, just spray on and then walk away. Rinsing is not necessary. Test a small area on your patio furniture cushions before applying a full treatment. While it should be safe to use on every outdoor surface, make sure that very delicate materials are given the same spot test so that you do not damage anything. This bottle will treat roughly 200 square feet. Protect from Over Spray

Spray and Forget offers four versions of this particular solution, each of which comes in a very different bottle, so that you can choose the right one for you. 32 Oz Bottle

How long will Wet & Forget take to work?

Although the Spray and Forget Revolutionary Roof Cleaner is non-corrosive and eco friendly, it could still cause potential damage to very delicate plants. People who have lower tolerance for fumes as well as people who have breathing difficulties of any kind should use protective gear including face masks and gloves before applying this product. Eye protection such as goggles is also a good idea.