No Results Found

Refine by Rating

Customer Images (7)
  • No bleach or acids -- but it does have lye!
  • October 12, 2015

This particular solution remains mostly unused, thanks to the chemistry that I discovered after reading the MSDS. I was planning to use it on my roof to remove the staining, but I decided against it. A test spot showed that it indeed removed the staining, but I decided not to go much further, and used a solution of bleach and Jo-max instead. Many deck cleaners have oxalic acid (a weak acid), and many mildew removers require the use of bleach. I find it funny that this material boasts of not containing acid or bleach, when it does contain a 14% concentration of NaOH, sodium hydroxide (lye, drain cleaner.) NaOH is a strong base, so this is correct that there is no acid or bleach, but NaOH is, in my mind, more dangerous than oxalic acid or bleach. Aluminum and NaOH are a famously bad combination. Now, if your aluminum capping is painted, and you rinse this solution quickly, there will be no problem. But I didn't want to risk it around the gutters, capping, and other aluminum siding on the house. So for decks, I can't see any harm, but for roofs, I do wonder about the wisdom of washing aluminum trim with this solution. If nothing else, the chemistry should be advertised/warned about more prominently.

  • Top 1000 Contributor
  • Pro

gallus

Philadelphia, PA, USA
35 to 44, Male
9 out of 9 people found this helpful
more details...
By: gallus
  • works great
  • March 16, 2013
  • Recommended Product

i have been using this product for more than ten years now.i found that if you are cleaning your deck its best to do it on a rainy day,because the deck needs to stay wet the whole time. mix it 9 to 1,and spray it several times and just keep it soaked with the cleaner and a wet surface for an houre and rinse ,when the sun dries it out it will be cleaner,clean enough to stain.never p.w. a deck it will ruin the wood.

Pros Easy to Use, High Quality
  • Pro

kevin

maryland
45 to 54, Male
7 out of 7 people found this helpful
more details...
By: kevin
  • Worked as advertised
  • June 27, 2014
  • Recommended Product

Applied it on my deck through my power washer on low spray level. Used a stiff brush with light pressure to work it in a little better. Let sit for about 10-15 minutes, making sure it didn't dry by lightly spraying every 5 minutes, and power washed it off at medium to high pressure. Deck wood looks almost new. Removed all the mildew, dirt, and grease spillage from my BBQ grill. Deck is about 15 yrs. old and hadn't been cleaned in 3-4 years. Even loosened up the old peeling stain to help removal with power washer. Good product...worked as advertised.

Pros Easy to Use
  • DIY

Greeneyety

Southern New Jersey
45 to 54, Male
7 out of 7 people found this helpful
more details...
By: Greeneyety
  • This works well but requires some effort
  • January 25, 2016
  • Recommended Product

Friends, I'm sharing my test results of different roof-stain removal efforts and products, including this one, which I now recommend because it works and is worth ten bucks. Some Background: I have a 12-year old, grey colored, GAF 30-year asphalt roof that I let go too long re: black mold, blended with copper-colored and green-algae stains. Some areas have all three, others just black mold, or that strange copper tone that weirdly glistens in direct sun. I first tried a pool-shock based, DIY mixture. I mixed a cup of powdered pool shock with 1-gal of water and spayed it on my roof. I waited 10 minutes and then re-sprayed that same area with this stuff: http://www.homedepot.com/p/ZEP-128-oz-House-and-Siding-Pressure-Wash-Concentrate-Case-of-4-ZUVWS128/202751143 20 minutes later, I garden-hose-sprayed the treated area off. Some green and black mold was removed, but plenty of staining remained. A repeat treatment did little better. I lost patience. So I went back to Home Depot to try "M-1 Roof and Deck Cleaner": http://www.homedepot.com/p/M-1-1-gal-Deck-and-Roof-Cleaner-DR1G/100196451 It said mix 13 oz in a gallon of water and spray it on. I probably used 20 oz. because, well hey, my stains were really dark. I sprayed the mixture using a $16 hand-pump sprayer, something like this: http://www.homedepot.com/p/RL-Flo-Master-1-Gal-Economy-Sprayer-1401P/100188485 I came back in about 15-20 minutes and still there was no change -- UNTIL I sprayed, close-up (4” away) each shingle with my garden hose (narrowly focused spray using a standard nozzle). I didn’t want to use my pressure washer, it was too much of a hassle to get it out of the garage. It worked! All the dark mold and gunk was stripped out of each shingle. Mind you, I had to work some. I had to methodically spray each shingle up close, so that’s a lot of back-and-forth, tiring my arm. To be clear: You must stand over a patch of roof and bend over and direct-spray each shingle, from about 3-4" away, at full blast (guessing my hose was outputting at 200-300 psi or so). Yes, you’ll get wet. But all the gunk came out of each shingle, and it was satisfying to see my roof shingles restored to what they once were. And honestly, the mold I had looked like it would never come out. So, I was impressed by M-1, and pleased at the price ($10 bucks a gallon). Bottom line: From spray on to spray-off, it takes about a half hour for each 60 square feet of affected roof. I had about 180 square feet of afflicted roof area. Of course, you need to do this when the sun is brightly shining on your roof so you can see the dark mold shingles from the wet ones. I suppose the job would go faster with a pressure washer and wide enough spray head. But I was worried I'd use too much pressure and prematurely wear out my shingles. A garden hose, with standard output, will do the trick. It just takes longer. I also invested in a (more expensive) "Spray & Forget" solution: http://www.homedepot.com/p/Spray-Forget-64-oz-House-and-Deck-No-Rinse-Eco-friendly-Exterior-Cleaner-Concentrate-Makes-up-to-5-gal-SFHD64OZ/203204600 That product is designed for the lazy. You spray, then walk away. No immediate results, though. It says it takes weeks if not months to work (relies on rainfall). I don’t know if that’s true (just tried it today), but after I finished my “M-1” job, I sprayed the just-cleaned area with it. I figure it's a good way to prevent recurrence of the mold and algae that constantly afflicts my Savannah, GA roof (Savannah is a high-humidity environment and thus one is constantly battling mold and other forms of "ick" on one's home).

Pros Easy Instructions, Easy to Apply, Easy to Use
  • DIY

Geewhizicist

Savannah, GA
55 to 64, Male
5 out of 5 people found this helpful
more details...
By: Geewhizicist
  • Good but need higher pressure to get great results
  • August 03, 2012
  • Recommended Product

Good stuff for roof but I tried to get away with water pressure less than 300 PSI which they say to use. You need to get an electric or some kind of pressure washer for it to really work well. Otherwise, great product and cleaned away moss and growth from the roof as promised, but you need something better than just plain pressure from garden hose.

jims

4 out of 4 people found this helpful
more details...
By: jims
  • GREAT PRODUCT
  • August 10, 2012
  • Recommended Product

This stuff works. I used it on my roof last yr. and power washed after. I powered washed other areas without using this product and at the time it didn't look any different. But a yr later the area I did spray with this is completely clean of all mildew and moss. The other areas I didn't use the product are brown again. Summary It works great and you have to wait a yr to really see the end results.

Pros Easy to Use Cons wait a year for results

JOHND

3 out of 3 people found this helpful
more details...
By: JOHND
  • You have GOT to get this stuff
  • June 02, 2014
  • Recommended Product

Believe me, I have tried everything to clean the algae and mold off the deck and the side of the house where there is minimal sun. I have tried Bleach, shock and other deck cleaners. My neighbor told me to use this. Not only did he tell me to use this, he came over and cleaned my shed to prove it to me. I am SOLD. You have GOT to use this stuff if you have any cleaning to do on your deck or siding (vinyl or clapboard). I diluted it out 1 gallon to 5 gallons. they say to make 10 gallons. I have a pump sprayer and I sprayed it on the most mildew-y part of the house. It was green. I just sprayed it on lightly so that it was all covered. I let it sit for 15 minutes. I used a soft brush...like you would use on your car...after a light rinse and the stuff came off almost completely. No strenuous labor. No scrubbing the paint off. A light brushing and then I rinsed off the mold, mildew and algae. My house looks almost brand new. Really...I am trying to tell you what a great product this is. It saved me a TON of time and it WORKED. A second coat of this stuff and the house really is cleaner than it has been in the 5 years I've lived here. It doesn't kill the plants. It is GREAT. And after you rinse it off and see what a great job it does, in a few hours, it will look even cleaner. It is hard to get across how good this is. When reading these things, you see some good...some bad. For the people who did not think it did a good job...I really have no idea what could have gone wrong.

Pros Easy to Use, it works!
  • DIY

Steve

Plainville, MA
55 to 64, Male
2 out of 2 people found this helpful
more details...
By: Steve
  • GREAT Tree Sap Remover
  • September 25, 2014
  • Recommended Product

I went over to the house of a friend of mine. He asked me how he could remove the tree sap from his expensive patio furniture. I said wait a minute, I have a "secret formula" in my truck that should work. I had a 8:1 pre-diluted spray bottle of M-1 in it. The minute I sprayed it on his chairs I could literally see the tree sap disappearing. I let it sit on the chair for a total of 5 minutes and pressure washed it clean. I was amazed, and so was he!! NO residue tree sap and dirt was all gone. My friend said that is the best his furniture had looked since the day he brought it home. Chalk up another useful application to M-1 Deck & Roof Cleaner!! Not just for roofs and decks anymore. I LOVE this stuff!!

Pros Easy to Clean, Lots of Features, Easy to Use, Easy to Install, Looks Great, Good Size & Weight
  • DIY

Bassrbiting

Brainerd, MN
45 to 54, Male
2 out of 2 people found this helpful
more details...
By: Bassrbiting
  • best deck cleaner
  • May 28, 2012
  • Recommended Product

This is the best deck cleaner I have ever used. Follow the directions, wet the deck, then spray the mixture with a pump sprayer, let it sit, best results if you give a brush with a stiff brush then spray with a power wash, not to strong. Will not damage plants if you rinse after using.

jaymed

2 out of 2 people found this helpful
more details...
By: jaymed
  • Hard work needed
  • June 25, 2016

Label says no scrubbing. Not true. Even using it undiluted it did nothing. Had to scrub pretty hard to get rid of years of weathering. Still had to go over some spots again. It does work, but not without a lot of elbow grease.

Cons Difficult to Clean

HomeDepotCustomer

South Jersey
65 or over, Male
1 out of 1 people found this helpful
more details...
By: HomeDepotCustomer