Rust and Hard water on Drivit

[Phoenix]

Can anyone help me with getting hard water and rust stains out of drivit? I know I have to be careful about hitting it with a lot of pressure and possible soft spots, but any of you find a chemical that works best? Im using 3000psi and 180F if needed.

 

[Bill B]

In the past I have used a dilute solution of SureKlean (muratic acid based) - brushed on and allowed to dwell for a minute or two, then rinse off. Could try some oxalic acid.

 

[Bill B]

Sorry, that was to remove rust stains. MAY work on hard water stains, but I'd go to Walmart and pick up something for that.

 

[Mike Hughes]

I'm not sure what to use on the stains, but you better not use anything over about 800 psi on that dryvit.

www.dryvit.com

 

[Larry L.]

Alum. brighter with HF acid will do the trick for hard water stains.

 

[ron]

ron p

www.prosoco.com ferrous stain remover contains sulfuric,oxalic,and phouspheric acids.
Your local block/brick/paver yard can get it for you.
The HF acid Bigboy suggested should work. Oxalic acid would be next on my list to try, followed by the shur-clean product.

 

[the_GUNN_man]

I use some stuff called Harvey's rust remover. It comes in a powered form. I paid like $2 for it. I put it on a damp sponge and it wiped right off. I couldn't believe it worked so easy. The sponge starts to get hot it must have some kind of strong reaction with the rust. Best stuff I have ever seen. I used CLR but had to scrub and scrub and it still didn't take it all off. I bought this stuff and it worked like a dream. I bought it at Menard's. I am not sure how big that chain is. It is like a Home Depot/Lowes but on a lower scale. I hope you can find this stuff. Here is the manufacturer.

William H. Harvey Company
Omaha, NE 68117

Sorry no phone number, Good Luck