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Post Info TOPIC: Acid wash metal roof for painting


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Acid wash metal roof for painting
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Anyone ever do an acid wash of a metal roof to prepare it for painting? Any advice on the type of acid to use. 



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Kleen Roof and Exterior Cleaning wrote:

Anyone ever do an acid wash of a metal roof to prepare it for painting? Any advice on the type of acid to use. 


 I would think Acid would rust a metal roof



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No, I have a customer that is going to be painting an old metal roof, and it needs an acid wash before the painting. I will be cleaning the roof, and then washing it with Oxalic acid. Just wondering if anyone has done this, and if they used a diff. acid.


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Kleen Roofs & Exteriors

1111 Nixon ave. nw

Grand Rapids, Mi 

49534

Kleen Roofs

www.kleenroofs.com

(616)914-9064

Pictures of our work



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Any acid, including Oxalic acid will create rust almost immediately!
I have been a painting contractor since 1978.
If you use acid on it and paint it quickly, the rust won't show through for a few months.
Better paint it orange.

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I would use SH.  Using Acid will open a can of worms...



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Roof Cleaning Katy Texas (281) 392-2304 wrote:

I would use SH.  Using Acid will open a can of worms...


 Marcus is right, Acid will ruin a metal roof



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Apple Roof Cleaning Tampa Florida

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Update on the roof. It was a zinc roof. The guy who owns the house owns a zinc company that builds everything zinc. The roof panels in question were 135 years old, and need to be painted. The owner said they acid wash all the zinc panels they make before painting them.

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Kleen Roofs & Exteriors

1111 Nixon ave. nw

Grand Rapids, Mi 

49534

Kleen Roofs

www.kleenroofs.com

(616)914-9064

Pictures of our work



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Well, I never do this.

I got a link and sharing here. Hope it will be helpful for DIY task

www.doityourself.com/stry/6-ways-to-clean-metal-roofing

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Great question

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