OLYMPIC PREMIUM DECK CLEANER - This product deep cleans decks, wood siding, shakes, shingles, and fences. Recommended for use on concrete, brick, stucco, tile, and vinyl. Excellent on composite decks and concrete. Removes dirt and mildew in 10 minutes. This product is ready to use with no mixing and biodegradable. No scrubbing is required. Covers approximately 250 to 300 sq. ft. per gallon.
This is an amazing product. It works exactly as described on the container - it removes mildew, algae, and nasty stains on wood.
I have a deck with closely spaced white vertical 2x2 railing bars. The deck is on the shady side of the house, facing North. For years I've tried to get the mildew off those rails, green scrub pads, soap, simple green... nothing worked; until I used this product. I used a garden pressure sprayer, everywhere I sprayed this stuff, the black mildew disappeared in about three or four minutes, absolutely no scrubbing.
Some down sides to this product. It does have a fairly strong sanitizer / bleach odor. Once you flood the area with water, the smell disappears. Those vertical 2x2's are painted with solid white stain (I use Sikkens) and I tried this on white latex paint - this product didn't harm the paint at all. The main part of the deck is cedar and stained with a semi opaque stain (Sikkens again). Where the stain was fairly thick and built up, the deck cleaner lifted the stain, looking a lot like the effect of paint stripper. I tried it on a little area of concrete, and it didn't do a great job removing black mildew stains.
You may want to heed the instructions about trying this cleaner on a small inconspicuous area. If I wasn't expecting to remove most of the stain from my deck, I would have been very disappointed by the stain lifting. This project went great because I don't have to paint those darn white railings. Remember to rinse the area really well with a lot of water.
This is a great product. I can't believe that it removes mildew this well. It is a miracle to me.
Since there isn't a great product description here on Amazon, I'll highlight some information from the label. Coverage - 625-750sq ft.Read more ›
So far every year I have used a pressure washer to remove mildew and "nastiness" from my 20 year old deck, but for some reason this year it didn't do the job. I purchased this from a local hardware store and within an hour I had a "new" deck again. It work great just using a garden hose, but I recommend using a pressure washer if your deck is in really rough shape. If you're redoing your deck and want to stain it I HIGHLY RECOMMEND this product to do so.