Although this product seemed to work, it took a lot of work and effort. High pressure power washer worked much better by itself.
Response from Rust-OleumSupportDec 8, 2016
Let's talk about this, Dean! Rust-Oleum Restore Deck and Concrete Cleaner helps remove tough stains from mildew, mold, algae, fungus and moss, and leaves the surface clean. Special surfactants penetrate the surface to safely and easily dissolve the toughest stains from dirt, oil, grease, bird droppings, tree sap, and acid rain. This helps exterior surfaces receive deep cleaning and help prep these surfaces for painting.
Jul 19, 2016
Cleaner works well
Purchased product to clean large uncovered deck, stairs and railing, all cedar and last cleaned 7 years ago. 7 years of Pacific NW weather generates lots of moss, mold, mildew and failed stain/sealer. Used 40 degree pressure washer nozzle, after application per instructions, some areas close to house were hand scrubbed. Product is not just hose off but works well and restored wood color, too. A jug makes 8 gallons, very economical.
Used this product to clean old wood on a 20 year old deck - prior to using the Primer - it worked great cleaned grease spots from the grill and mildew spots off the deck with very little effort - followed directions and sprayed on then waited 10 minutes before washing off with the power washer.
I bought my house in December and noted that the concrete patio out back look like a grill had been allowed to pop grease all over it. I also noted a good amount of green mold /algae on it. I read the directions on this product before purchasing and even bought the special little roller to make sure that I did everything correctly. It didn't take anything off, not even the mold. I reapplied and scrubbed it, even left it set longer. It did not work at all. I'm taking what's left of it back tomorrow and asking for my money back.
Purchased to clean my wood deck pre instructions from Rustoleum
I'm sure this product is good if you are trying to get ride of mold or before painting a deck if you haven't pressure washed the deck. However, I pressure washed my deck rather well. I called Rustoleum customer service and they said it was like Washing your dishes without soap if you didn't use this prep. Well, if I pressure washed my dishes I know they would be clean. This prep works well on siding, the deck, I really didn't see any results. This prep was used before application of Rustoleum's Restore 10X Advanced. The newly painted deck looks great, the Restore 10X Advanced is worth the money.
It doesn't remove stains caused by mold, mildew, fungus, etc.
I carefully read the label and saw where it specifically stated that it "removes stains caused by mold, mildew, fungus, etc.". Save your money and time and don't bother buying it!
Response from Rust-OleumSupportApr 19, 2016
Uh oh. We want to know more about your application and get to the bottom of this. Please call us at 800-373-6333 to discuss further. In the meantime, please keep in mind, we recommend allowing Rust-Oleum Restore Deck and Concrete Cleaner to remain on the surface for 5-10 minutes to allow the product to penetrate the surface.