Metal Roof Stain...HELP

[Mark 8262]

A local church has asked me if I could help them remove this stain from this metal roof. Does anyone have any good ideas on what would remove this stain. It appears that the cross is rusting down onto the metal roof. Do you think F9 would help. Not charging them and they were renting a lift for other maintenance.


Any suggestions would be appreciated

 

[mike barrett]

Looks like rust, I would try F9. It can't hurt to try it since they have a lift.

 

[Doug Rucker]

Definitely F9. Mix it strong like 1:1 and rinse really good.

 

[Mark 8262]

I'll give it a shot.........thanks

 

[Rapid HotClean]

Don't get me wrong because I love F9. But I tried it on rusted chrome at 1:1 and it didn't work. Maybe the chromed surface kept it from penetrating.

 

[Ron Musgraves]

After please