Zep House and Siding Pressure Wash Cleaner Concentrate - 1 Gallon (Case of 2) ZUVWS128 - Construction Grade Formula

I bought what I call "The Crack House" as an investment property. The previous drug addled owners did zero upkeep in the 8 years that they owned the house. There was a thick unsightly build up of algae on the vinyl siding, especially on the nort facing sides. The house looked like crap.Today I mixed this concentrate in my pump sprayer. My ratio of Zep to water was by the instructions on the bottle for heavier buildup. I sprayed the vinyl siding, and let it sit for a few minutes, then worked it in with a soft bristled push broom. I then simply used a garden hose to rinse, and all the mold algae and dirt just melted away. I used about 3/4 of the bottle to clean about 1/4 the house, so this product goes a long way, even though I was using the higher end of the concentration mix ratio.100% satisfied with this product. It is easy to use and there are no noxious fumes or smells. Saved me a few hundred dollars since I didn't have to hire someone with a pressure washer.Check out the before and after pictures.

I’ve used Zep a number of times with my pressure washer. Does a great job cleaning the siding, gutters, garage door and leaves no residue.

I have been using bleach to kill the mildew that grows on the north side of my metal building but wanted to try something different, so I tried ZEP in my pressure washer since it was listed for pressure washers. Perhaps I was expecting ZEP to react like the bleach did, but I was a bit disappointed. I had to get within 3 feet of my building with the tip of the 3200 PSI rated power washer to get a perfect cleaning. Overall the ZEP did clean well but I was hoping for a better job on mildew.

This product does the job. Not sure for how long but a month into it and still looks great

At one time it was hard to even get a hold of this but I know if I went to Amazon I'd get it and they had it from this company

If you need to wash off just dirt it will work but this product did not clean the green algae on my siding. I doubled the strength but it just would not dissolve the "green".

I bought this to use on the underneath of a metal deck roof. It was easy to use and did a great job. The while roof is a bright white again.

Zep really did a good job with this formula - hopefully they won't dilute it in the future. It works fast with little effort. Great value, no smell, and plant friendly.