sounds like a patter of long neglect. Galvanized that wore down to rust gave him many chances to fix it.

Now he has rust breakthrough. If he does not watch it he might already have rustthrough (does he have leaks?)very soon as any water will now be trapped beneath the elastomeric coating and may well quickly rust the roof through in many places.

This needs to be looked at structurally, as many galvanized steel roofs are also contributory structural elements, and if they fail so might the roof. Is there any potential for snow loading here? or are you in the warm area of the globe?

This might be very expensive to fix properly. And if this guy is so cheap that he paints a roof to fix it, he might shy away from a proper fix, or blame you if a cheap fix that you do at his insistence fails.

Some jobs you just need to walk away from. Maybe first try to determine if this was an honest mistake. If so, and the client is willing to spend the money for a proper fix, OK. If they want a cheap fix for the cheap fix, walk! -- JHF

No, yes and remove the elastomeric coating—inspect roofing and structural integrity to determine appropriate process required.

Well, as cheap as he is, I' would reccomend to:

1.- "spot the spots"

2.-power wire-brush 'em.

3.- use weld-on patches.

4.- use a coating that you know will work.

Yahlasit

Hi ZZZGrinch!

Are you a painter? If you are, you are a dreamer like many of them. In my life I saw many paint jobs turning to disasters by not respecting the principle of painting, surface preparation. Now, after a price-cutting or time-cutting processes you cannot repair what is done. You can hide the coming through rust for a certain time but the rust will be the victor, and need to start over again the hiding process. My suggestion is to light sand-blast the whole roof and more the rusting parts and repaint once more everything. The first savings need to go and repair a faulty solution by a good one. I think, this painter will never make this kind of "non solution" for a solution. Wish good work, Gil.

Elastomeric, I used to work for them in the 80s, which should imply the durability of their products. As previously stated strip, assess, and replace as needed. I would suggest using elastomeric coatings as preventatives not repairs...