SOD Posted September 30, 2020 Report Share Posted September 30, 2020 I tried search and came up empty so I'll give this a try. Anybody know how to clean mildew off the roof. I use laundry detergent, bleach, and warm water to clean it off hardiplank on home but will this damage the rubber roof. Any advice appreciated Quote 391RES Open Range Dodge 3500 DRW Link to comment Share on other sites More sharing options...
DanZemke Posted September 30, 2020 Report Share Posted September 30, 2020 (edited) I've used this on a rubber roofed RV twice, with good results both times, and no detectable damage. No scrubbing needed. You you dilute it 5 to 1 with water and spray it on with a pump sprayer. My old RV had been sitting under trees for several years, so it had lots of mildew and lots of lichens. A week or so later it had killed everything and removed most of the stains. I used a garden hose with a narrow high-pressure pattern to wash it off. The lichens were dead, but as I recall, I had to scrape most of them off. The roof was still stained where the lichens were, so I sprayed again, and after a week or so, and another spray with the garden hose, all was good again. If you don't already have a pump sprayer, they also sell a version that is a sprayer that just connects to a hose. I already had a gallon sprayer similar to the second link below, so I chose to buy the less expensive half gallon bottle of just the liquid. https://www.amazon.com/Forget-800003-Mildew-Algae-Remover/dp/B001GTRBMO https://www.amazon.com/Smith-190285-1-Gallon-Chemical-Cleaning/dp/B002YNSADU/ref=sr_1_10?dchild=1&keywords=1+gallon+sprayer&qid=1601483275&s=lawn-garden&sr=1-10 Edited September 30, 2020 by DanZemke Quote Volvo 770, New Horizons Majestic and an upcoming Smart car Link to comment Share on other sites More sharing options...
Kirk W Posted September 30, 2020 Report Share Posted September 30, 2020 Have you tried any of the RV rubber roof cleaning products, as there are many of them out there. Quote Good travelin !...............KirkFull-time 11+ years...... Now seasonal travelers.Kirk & Pam's Great RV Adventure Link to comment Share on other sites More sharing options...
DanZemke Posted September 30, 2020 Report Share Posted September 30, 2020 I haven't tried any of the products in Kirk's link except for the "Wet and Forget" product. I based my decision on the following thread and the Amazon ratings for the product. Quote Volvo 770, New Horizons Majestic and an upcoming Smart car Link to comment Share on other sites More sharing options...
Ray,IN Posted September 30, 2020 Report Share Posted September 30, 2020 Every time I wash the RV I mix a few oz bleach and auto wash soap into a 5G bucket of water. I then start on the roof and wash downward. That is enough bleach to kill all mold/mildew yet not damage the awnings or anything else. Quote 2000 Winnebago Ultimate Freedom USQ40JD, ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG retired;Good Sam Life member,FMCA ." And so, my fellow Americans: ask not what your country can do for you--ask what you can do for your country. John F. Kennedy 20 Jan 1961 Link to comment Share on other sites More sharing options...
SOD Posted October 1, 2020 Author Report Share Posted October 1, 2020 Thanks for the info. I've used several types of "RV roof cleaner" with no results I'll try the wet and forget, Hope I can get the white back on the roof Quote 391RES Open Range Dodge 3500 DRW Link to comment Share on other sites More sharing options...
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