How to remove stains in bay

[Woodys car wash]

I have just bought my first car wash and I’m trying to clean it up. The walls are white vinyl or pvc with iron or rust stains. I have tried a couple different cleaners and it’s not working.
Any help would be greatly appreciated.

 

[CarWashBoy]

WALL Cleaner with Hydrofluoric Acid from Kleen Rite.

 

[David Rolf]

The only chemical I use that has worked is 596-B Aluminum brightener. It costs about $75 bucks for 5 gallons. Makes my dirty vinyl very white. The key is not to let it get too bad. Always wear proper protection as well.

 

[Woodys car wash]

The only chemical I use that has worked is 596-B Aluminum brightener. It costs about $75 bucks for 5 gallons. Makes my dirty vinyl very white. The key is not to let it get too bad. Always wear proper protection as well.

Thanks so much!!

 

[Yeti55]

X2 on aluminum brighter , I get mine at truck and trailer supply store

 

[Greg Pack]

All the previous posters mention products with the same active ingredient: Hydrofluoric acid. Almost every car wash chemical manufacturer makes it. Quest makes one called Aluminate and Arcadian Chemical makes one of the most well-know called Nu-Wall. It is also sold and marketed by truck washing companies and detail suppliers as aluminum brightener. You can even buy it in a weaker solution at your local Napa Auto Parts. It works like nothing else but HF acid is one of the most dangerous products that we use in the industry so I recommend you read up on it, use it with respect and common sense. I don't trust all employees enough to use this carefully.

There are some other acid based products that don't work quite a well but they are safer to use. Quest makes one called SAW and Arcadian makes one called C3

 

[Eric H]

The walls are white vinyl or pvc with iron or rust stains.

The thing I caution everyone about in regards to cleaning PVC panels is not to use too strong of a chemical. The HF will get it clean with the least amount of scrubbing but will also burn off the glossy layer that make the PVC easy to clean.
Using a strong acid like HF will have the same effect as using acid to etch a concrete floor to prep for paint. It creates a very good surface for dirt to stick to. If your panels have a full chalky appearance when clean the finish has already been burned off.
I use Stone Soap’s Restore diluted 1:5. Apply with a pump sprayer and give a light scrub with a medium stiff “truck brush”. Restore does contain ABF which needs to be treated similar to HF.