To avoid these ads, REGISTER NOW!

Metal Roof paint

gregs

Well-known member
Joined
Mar 16, 2007
Messages
1,602
I may be getting a used metal carport that is green in color. I am going to have to dissemble it and move it to my property and put it next to my building for parking, outdoor work, etc. My shop is red and tan and the green just isnt going to work. I thought while I have the panels off and on the ground it would be an easy time to repaint them. Any recommendations on paint? The existing paint is in good shape and just needs to be pressure washed, no flaking, rusting, etc.
 
To avoid these ads, REGISTER NOW!

jack stand

Well-known member
Joined
Feb 29, 2012
Messages
3,342
Location
Lakes Region Maine
I believe that "Henry" offers paint in various colors. I have only seen this at a "commercial" roofers supply house. Internet or one of the many paint (sherwin Williams for example) stores should have something that's both custom mixable and a metal roof paint.
 

karoc

Well-known member
Joined
Dec 19, 2017
Messages
2,010
Location
Hemphill Tx
I don’t think what paint you get will last before starts pealing. That original paint is bake on finish onto perfectly prepared surface. But if it was me I would clean then rough sand surface then apply best self etching primer that Sherwin Williams has then go over that with exterior urethane paint. I think this will put things in your favor, but there are also industrial paint that SW’s which is epoxy paint that hard and won’t fade for years. But you may want check see what’s available there’s still shortage.SW’s shelves were kinda empty few weeks ago which all stores stock was low
 
OP
G

gregs

Well-known member
Joined
Mar 16, 2007
Messages
1,602
I wish metal prices where lower, then I could just replace it with a better color. Read about just spraying it with gloss acrylic latex as that seems to stick to everything. Not sure how long it would last on the roof part.
 

nadogail

Well-known member
Joined
Jan 23, 2009
Messages
31,982
Location
Coronado, CA
A lot will depend on your local climate conditions.
Consider that cars have metal roofs and sometimes spend their whole lives exposed to the wind and rain.
 

That Guy Scott

Well-known member
Joined
Dec 31, 2010
Messages
139
Location
SoCal
I was considering this to paint some trim and the roll up doors of my shop. Look on their website. They also offer an oil based version too. Idk if it will work for the roof.

 

karoc

Well-known member
Joined
Dec 19, 2017
Messages
2,010
Location
Hemphill Tx
I also wish the same thing, I am wanting metal siding and roof but at present price there is not way. I read someplace that there is still a shortage of the chemicals that makes up paint for those panels.
 

FMB4

Well-known member
Joined
Jan 19, 2017
Messages
2,926
I am going to have to dissemble it and move it to my property and put it next to my building for parking, outdoor work, etc. I thought while I have the panels off and on the ground it would be an easy time to repaint them.
My limited experience with dissembling, moving, and reassembling a 12' x 16' foot metal shed is that doing so can be a tremendous amount of work. Also realize that you might have difficulty aligning the many fasteners with their respective 'holes' due to the metal 'warping' over the years that it was installed.
 

readhead

Well-known member
Joined
Dec 8, 2012
Messages
6,181
Location
Durango, Co.
The paint won't last. It would be less work to go out in the yard and burn $100 bills. Wait until the price of steel comes down and replace the sheets.
 
OP
G

gregs

Well-known member
Joined
Mar 16, 2007
Messages
1,602
It’s one of the square tube carports. There isn’t a million screws like one of those Arrow sheds. I’m pretty detailed oriented and will make a plan, number and mark everything. Even if the holes don’t match up as long as the hole falls on the tube I can just drill a new hole. Planning on using new screws as well because the rubber washers are showing signs of deterioration.

As far as painting the metal, that’s going to be the plan for now. Checking around here it’s over $3.50 linear foot and would be almost $1000 to replace. Seems like a waste of material to just throw away because of the color.
 

like2wheel

Well-known member
Joined
Oct 29, 2014
Messages
1,693
Location
On an as needed basis
Pretty sure metal roofs are painted all the time on commercial buildings. I remember years ago a factory rep (Majic?) telling me they supplied the red paint for Pizza Hut roofs. Those roofs are metal, no longer red, & still have the same type shingles, I'm sure they've been painted over.

I would ask a commercial paint supplier.

Edit;
My wife is a commercial property manager for a small firm. I just asked her, she has had it done numerous times. She recommended Sherwin Williams.
 
Last edited:
OP
G

gregs

Well-known member
Joined
Mar 16, 2007
Messages
1,602
Thanks for the recommendation. I have found that there are a lot of paints sold as DTM (direct to metal) that are designed to work with painted and bare metal. Most are water based, so if it will work in an airless sprayer I should be good. Figure on a good pressure washing and prep on the ground and spray them. Then reinstall after giving them time to cure. Cost wise I am estimating around $200 so far. If it last 5 years or more then I will be happy. It is just a carport.
 

mike93lx

ALLIANCE MEMBER
Joined
Dec 9, 2013
Messages
37,648
Location
Richmond, VA
Is it a profile that would allow you to flip the panels? Wondering if the underside might be in a condition that has a better chance of holding paint
 

FMB4

Well-known member
Joined
Jan 19, 2017
Messages
2,926
You could also consider painting your shop green (sorta kidding here).
 
To avoid these ads, REGISTER NOW!

bamawildcat

Well-known member
Joined
Jul 12, 2014
Messages
148
It's all in the prep. If you pressure wash it and paint it, it is guaranteed to peel. If the paint is in good shape now, not chalky, a good mechanical surface preparation, proper paint and primer will last until it dulls out from UV.
 
OP
G

gregs

Well-known member
Joined
Mar 16, 2007
Messages
1,602
I thought about flipping it over since its white on the bottom, but the profile wouldnt work.

Any ideas on how to do a "good mechanical surface preparation" in a efficient manor? The panels are 31' long by 3' wide.
 
  • Sad
Reactions: KML

mike93lx

ALLIANCE MEMBER
Joined
Dec 9, 2013
Messages
37,648
Location
Richmond, VA
Lol.

Nuts for doing this whole thing. Any proper surface prep on all that steel is going to take a long time and require a lot of handling and space
 
OP
G

gregs

Well-known member
Joined
Mar 16, 2007
Messages
1,602
I guess if I was going to paint it like a car (block sand, prime, block it again, 2 stage paint, cut and buff) then yeah I would be nuts.

However painting it like a building or house with an airless sprayer is easy, especially when the panels will be off and on the ground. Heck I painted the 30x50x14 shop by myself on a ladder. Thats way more sq footage than these panels.

I have been researching different paints designed just for this application. There seems to be plenty of different paint available designed to adhere to painted metal. There are even energy efficient paints designed just for painting existing metal roofs and controlling heat gain. I haven't had time to swing by the commercial Sherwin Williams store yet to see what they recommend. But I am sure I can find something that will work.

As for being nuts, yeah... maybe... But nothing ventured nothing gained.
 

like2wheel

Well-known member
Joined
Oct 29, 2014
Messages
1,693
Location
On an as needed basis
I'd bet that no one that commented here has any practical experience with what you are asking. Myself included.
You need to talk to a professional, I'm sure its very doable.

I will say this: 30 years ago I wanted to change the color of an aluminum sided house that I bought. People told me I was crazy, the paint would peel. I went to a commercial paint store, they sold me what I needed. 10 years ago, my paint was still on there, the original color was just starting to show thru. I assure you I never sanded or even primed the siding, just a quick pressure wash. Not exactly the same, but again commercial roofs are painted all the time. I'm pretty sure nobody sanded the Pizza Hut metal shingles.
 
Last edited:

readhead

Well-known member
Joined
Dec 8, 2012
Messages
6,181
Location
Durango, Co.
A lot of metal roofing here. I have yet to see a repaint last more than 2-3 years. It is always the same story. The painter or the paint store says this is the best and with proper prep will last twenty years. Now they want a price to replace the sheeting because it looks worse than if they had never painted it.
My suggestion would be to put it up as is and replace the metal in the spring when prices hopefully come down.
 

dfiler2

Well-known member
Joined
Dec 15, 2014
Messages
2,858
Location
NW Minnesota
We painted the roof on a steel building 7 years ago and it still looks good. Just went to the local hardware store and had them find out what paint should be used then pressure washed the roof and used an airless sprayer on it.
 
OP
G

gregs

Well-known member
Joined
Mar 16, 2007
Messages
1,602
My electric co-op comes around every 7-8 years to inspect and paint my pad mounted transformer. They just happened to come about a month ago before the carport became available. Two guys in a service truck that opened the cover, inspected it for leaks and tightened the connections. Then they peeled off all the decals and numbers and wiped it down with some type of cleaner. Spray painted it with an airless sprayer and some type of oil based paint. Smelled like paint for a week, was rained on the next day and it looks fine. Basically what you would call less than the best prep. The existing paint (already painted once) was a little chalky but not peeling or flaking off and the sides looked fine. I would assume it was just some industrial enamel paint like they use on equipment and trailers.

The other crazy thing I saw was a small used car lot close by that painted there office building. It is an old small concrete block house with a shingled roof. They masked off the windows and front door and sprayed the entire building and roof bright yellow. I mean everything is yellow except the glass windows and door. I'm sure they used the cheapest latex paint they could find and doubt they did any prep. Its been about 3 years and the paint is still on the roof. I figured it would have been peeling off in sheets by now.
 
OP
G

gregs

Well-known member
Joined
Mar 16, 2007
Messages
1,602
The color is the issue to begin with. Since the carport is lower and my plan is to put it next to my shop building I want it to be a similar color. The existing metal is in good shape with no rust, only some moss where part of it is under a tree.
 

bradpac

Well-known member
Joined
Sep 8, 2013
Messages
721
Location
Central TX
Metal buildings and roofs are re-painted all the time. Pressure wash it, with some degreaser if possible rinse it real good and throw some paint on it. I've seen professional crews both spray and roll them depending on the job and size. Usually they use an alkyd based paint
 
To avoid these ads, REGISTER NOW!
Top Bottom