Ok, advice is needed. I have a idea, but am seeking advice. I have metal siding, as you can see. It was peeling about 3 or 4 years ago, so I powered sprayed and cleaned the loose pieces off. Now we are back at square one again. I used Kiltz oil based primer and then covered with a Sherwin Williams paint that had a emulsified polymer added to it. But I really don't want to be fighting a battle every few years. What's will stick to the metal siding... I even thought about clear coating it after removing all the paint....
I dont believe any product applied over top of that existing paint will keep it from peeling. Apparently the metal prep was not good originally. Or its at the end of its lifespan. I have a similar siding. Its white paint that looks like chalk and runs off with the rain
Back in my painting days I'm 99 percent sure I used tsp combined with the 3500psi powerwasher 1 coat of good porter oil bonding primer and then 2 coats of porter oil as a top coat. If it wasn't tsp I used, I can't remember what it was as its been 15 years. Possibly muratic acid? Whatever it was, it freaking worked and I guaranteed it for 10 years without a single callback. 1 question...are these the same spots u did previous or new ones?
I think it the original paint/primer taking it off. But it's acting just the same. It crinkles and falls off..... What's TSP?
Your pics scream prep issue and the typical chalking of al. Go big or go home on the prep, and any oil worth a chit should stick to al or steel but in this rare case, I'd spend 50 plus dollars a gallon on products engineered for this application. Edit to add: oil is apparently hard to get now. I'd suggest a commercial supplier and not a box store. Sw,porter, or if you have to, I'd open an account with Glidden commercial. Do whats needed to get oil paint. Wish you were closer...boots on the ground and an honest guy can get this done pretty cheap if you can get some oil.
If you don't have all the original paint off you may fight this forever. I would guess possibly the metal is contaminated under the original so it is losing adhesion and sometimes heat will cause the contaminates to rise to the surface.
There wasn't water based painted over oil based paint was there? 2 years ago we used the valspar reserve from lowes after a powerwashing. Same alum application. Good luck....
Well back to this...... got some primer for galvanized metal. So get some prep work to hopefully apply the primer tomorrow...... I forgot how fun ladder work was...
Looks like it may have been originally galvanized steel factory coil coated with PVC. If I'm right, you will need to get all the paint off or it will continue to peel in the areas that have not yet delaminated. A lot of this siding has long warranties on the coating which may allow you to file a claim if you have any documentation.
Naw... just getting back to it....I'm a bit slow at some things....... plus work last year took pretty much all my time last year, so it got put off. Its not on my "fun" list of things to do. But I have to get it done before I get on the ordinance bad list... I'm taking it down to the bare metal this time. Then see what happens. But yea, vinyl siding is in my thoughts too.
And a lot of the warranties are non transferable so your probably out of luck. The PVC coatings are thick vinyl coating but have a history of field delamination. UV exposure over time causes the failures. Can you crumble the coating up in your hand? You will need to get it all off. I don't like painting galvanized, never had the best luck with it, even when using the specific primers designed for bare galvanized. Good luck with whatever you decide.
I just got the first coat of primer on. Gonna wait for a bit till afternoon to repaint. Should I do another paint of primer or go to my house paint? If another coat of primer is needed, then I'll just do the house paint tomorrow night after work.
I'll try to take some pictures as I go... But Front section done 3 year to date almost ... is still looking good. So with a couple of days off, I figure I'd do the next section.... More pictures to follow.... Scraped: After Flapper Wheel:
Looks like you need RhinoShield. Probably very expensive, but they offer a 25 year warranty and you won't have to be up on a ladder. Although truth be told I have never used or know anyone that has used this company. Residential Exterior Paint Coatings from Rhino Shield
Primed.... I’ll either paint tonight or tomorrow morning... see how I feel and how the weather forecast looks tonight...
