Time to paint a 40 year old pole building

[Budweiser John]

I知 sure this topic has been covered in the past but coating technology continues to advance so here goes the question.
Given today痴 technology, who or what is the best paint product to use on a 1970s vintage steel building?
The steel is rust free, weathered to the prime coat and originally painted red. My intent is to maintain the original color and apply the new coating with an airless spray application after power washing the building.
I知 Leary of the big box store offerings after a really bad experience with some Home Depot paint products. My all time favorite paint company is Sherwin Williams but wondering what the members here might recommend?

 

[Deere Dude]

I just did my pole barn a couple years ago and used Rustoleum Hunter (or Forest) Green. It covered great with the sprayer, I did not even question SW but if it is your fav. company, do that. I used Rustoleum because of its' reviews and my history with using it. The only sure thing is to change the steel., but if you can walk on it safely and want to do it again in 5 years, I would repaint.

 

[jaydee325]

About 4 years ago we repainted our 32x32x10 pole barn. There was some rust showing on some panel edges.

We’ve always used an independent paint shop in town. He had the paint codes to match our house and recommended paint that would arrest the rust and be durable.

Good news is the paint still looks like the day it was painted. But, quality has its cost.

 

[Budweiser John]

I just did my pole barn a couple years ago and used Rustoleum Hunter (or Forest) Green. It covered great with the sprayer, I did not even question SW but if it is your fav. company, do that. I used Rustoleum because of its' reviews and my history with using it. The only sure thing is to change the steel., but if you can walk on it safely and want to do it again in 5 years, I would repaint.

Yes, I too have had good luck with Rustoleum paint on machinery so good call. This project is only the side walls as the roof has been coated with an elastomeric roof coating last year.

 

[Budweiser John]

About 4 years ago we repainted our 32x32x10 pole barn. There was some rust showing on some panel edges.

We’ve always used an independent paint shop in town. He had the paint codes to match our house and recommended paint that would arrest the rust and be durable.

Good news is the paint still looks like the day it was painted. But, quality has its cost.

The reason for my post is to determine the best coating which I know will not be the cheapest. I got 40+ years out of the factory paint and would like to be assured what ever the new coating is, I can look forward to at least 12 to 15 years or more of service.
At that future point in time i’ll Be pushing 90 and it probably won’t matter.

 

[fried1765]

I知 sure this topic has been covered in the past but coating technology continues to advance so here goes the question.
Given todayç—´ technology, who or what is the best paint product to use on a 1970s vintage steel building?
The steel is rust free, weathered to the prime coat and originally painted red. My intent is to maintain the original color and apply the new coating with an airless spray application after power washing the building.
I知 Leary of the big box store offerings after a really bad experience with some Home Depot paint products. My all time favorite paint company is Sherwin Williams but wondering what the members here might recommend?

I have a Morton building that was built in 1984 - now 35 years old.

Morton is a first class outfit, so I contacted them for advice.
Several years ago they told me Sherwin Williams, but I don't remember their specific paint type name.
I have not had the building painted yet.
You should consider both a primer, and a top coat.

 

[davedj1]

Talk to your SW dealer and ask them what they recommend.

 

[ddbackhoe]

I知 sure this topic has been covered in the past but coating technology continues to advance so here goes the question.
Given todayç—´ technology, who or what is the best paint product to use on a 1970s vintage steel building?
The steel is rust free, weathered to the prime coat and originally painted red. My intent is to maintain the original color and apply the new coating with an airless spray application after power washing the building.
I知 Leary of the big box store offerings after a really bad experience with some Home Depot paint products. My all time favorite paint company is Sherwin Williams but wondering what the members here might recommend?

This may be of some help. I prefer SW, not sure why I do not trust the big box stores for help with this kind of stuff.

https://images.sherwin-williams.com/content_images/sw-pdf-farmagric-spec-guide.pdf

Farm/Agricultural - Sherwin-Williams

 

[rgr33]

I repainted my dads old pole barn about 12 years ago, using SW 100% acrylic. He wanted it to match his house.

It still looks good. Some day I will get around to doing my own barn, but not for a while, too many other projects this summer.

 

[Cord]

There are several manufacturers that carry a paint intended for this application. Valspar is the first that comes to mind: Valspar Metal Building Siding and Roof Finish I'm certain there are other competing products out there. This paint is a bit different from other latex paints in that this is a metal application so prep is critical to getting the paint to adhere. The surface would need to cleaned of any dirt and all loose paint removed. This can be tough to accomplish given the large surfaces found on metal building. These paints are more expensive because they are formulated to help counter the lack of proper prep.