Rated 4.0 out of 5 by 72
Rated 5.0 out of 5.0 by Rich Great on log home
Worked great on my log home. I have used many Zep products and have been very pleased with their performance. It works great in removing dirt, soot and grime with just a soaking and then pressure washing after about ten minutes. Couldn't be happier.
May 31, 2016
Rated 3.0 out of 5.0 by Roger Good cleaner to use with the pressure washer
We used Zep Commercial House and Siding Cleaner Concentrate in 20:1 ratio with our pressure washer and got some excellent results. It does not smell like a toxic solution and easy to work with. Over all an effective product that took care of the mold, dirt and fungus from the siding and the garage floor. It did not require any scrubbing but that may be because we were using a pressure washer.
May 1, 2016
Rated 4.0 out of 5.0 by Medic31 It worked okay
It worked okay but not a lot of cleaning in terms of stain removal but did bring back the siding looking cleaner and brighter
July 5, 2016
Rated 5.0 out of 5.0 by bpgolfs Works Well if you are patient
The last time I used this product I power sprayed if off too quickly. Make sure you apply it to dry areas. Let it sit about 10 minutes and then, power rinse. It works well. I did the worst side of my house first (the north) which had the most moldy look. It works fine. Do small areas at a time 8 ft. x 10ft. is enough. Let it soak in for 10 min., then power spray off.
June 14, 2016
Rated 5.0 out of 5.0 by Macwet Works Well
I've used this product for two years on two different homes in central Illinois and southeastern Wisconsin with a 3,500 psi gas powered pressure washer. Before using the Zep Wash Concentrate I used plain water for several years. Decided to try the Zep product because it was taking two days to wash down a two story 3,000 square foot house with a 45 foot covered porch and I had to use the pressure washer at full blast to remove the dirt. With the Zep wash, I spray an area covering about half of one side using only the soap setting and then wash the other half of the side while the first half soaks and loosens the dirt. Then I go back to the first half and wash it using full pressure where necessary and a wider spray when possible. Using the wash reduces the time required to wash the house and its noticeably cleaner. I use about 5 or 6 gallon containers but it saves me about a third or half of the water I was using and about a third of the time.
June 13, 2016
Rated 5.0 out of 5.0 by Alde Good product
Excellent product for siding cleaning, decks, etc.
May 31, 2016
Rated 4.0 out of 5.0 by tallisonta Works great.
I had not pressured wash my house for 3 years. Mildew had accumulated to the point I considered replacing the wood but now it looks great.
May 31, 2016
Rated 4.0 out of 5.0 by MrRick Worked Pretty Good
I used the product according to label instructions. I had hoped that as I applied it to my vinyl siding I would immediately see some indicator that the product was loosening mildew stains. I saw nothing happening even after 10 minute wait. I then blasted the mildew off with my power washer. The mildew stains came off after a few passes with my power washer. Maybe the product did help but I'm not so sure it did.
May 18, 2016