Just bought a house, which included a 30x40 shop. The siding on the shop is galvanized. Its about 10-12 years old. I don't care for the bare metal look, and i'd like to paint it to match the color of the house.

What's the best way to paint the galvanized siding? I've read I either need special primer, or to remove the zinc coating from the steel? Special stripers or even vinegar were suggested. I don't want to have to spend a ton of money, since I could just replace the siding at that point, but I don't want to have to repainted every year either.

What's the best way to prime the metal? What exterior paint works best? I can either roll or spray the paint.

get a garden sprayer and fill it with white vinegar,spray it down,let it dry and paint it with whatever you like.i would recomend priming it with maybe kilz and just roll it with latex to match your house or something else.vinegar is the cheapest,easiest most readily product available for the prepping.

vinegar works good in the washing machine too :D

Take pics of what you do I`m curious how it comes out... I've debated extending the side of my shop and want to use galvanized roofing but want to paint it too.

I've read that Galvanized items are best weathered for a number of years before topcoating.

I can't give you a source on that...maybe the book Industrial Painting and Powder Coating.

Also, I'm sure the topcoat in question would have to be an Industrial Polyurethane.

I'd clean it, and do a test with a paint of your choice on a small section. After it cures, see if the paint sticks well or tends to flake off.

Most paint companies offer primers for galvanized metals. Here is Sherwin Williams' product: Pro Industrial™ Pro-Cryl® Universal Acrylic Primer (http://www.sherwin-williams.com/pro/sherwin_williams_paint/products/proindustrial-procryl-universalprimer/)

Which will give better results: Priming the Galvanized as it is with a special primer, or stripping the coating with Vinegar and then using a good metal primer?

Which will give better results: Priming the Galvanized as it is with a special primer, or stripping the coating with Vinegar and then using a good metal primer?

Anyone?

You'll likely have people say the vinegar trick is just as good or better than the primer rated for galvanized, but you're not going to get any warranty on the vinegar trick. As an architect, I specify the primers for any projects we're doing.

You'll likely have people say the vinegar trick is just as good or better than the primer rated for galvanized, but you're not going to get any warranty on the vinegar trick. As an architect, I specify the primers for any projects we're doing.

Procryl is what you want and if it has weathered more then a couple years you are wasting your time with the vinegar although it wont hurt if you want to do it. There are several products on the market that do the same thing by Jasco and Krud cutter.

Take a finger nail and sctratch the surface. If it feels like a chaulk board you are fine to just clean, prime and paint. If it feels like glass then you need to etch first. Use a good quality acrylic as finish, Solo semi by Sherwin williams is great stuff too.

Wayne
Painting contractor 22 years

Procryl is what you want and if it has weathered more then a couple years you are wasting your time with the vinegar although it wont hurt if you want to do it. There are several products on the market that do the same thing by Jasco and Krud cutter.

Take a finger nail and sctratch the surface. If it feels like a chaulk board you are fine to just clean, prime and paint. If it feels like glass then you need to etch first. Use a good quality acrylic as finish, Solo semi by Sherwin williams is great stuff too.

Wayne
Painting contractor 22 years

Perfect, It feels like a chalkboard! So if i reading correctly, Procryl as a primer and Solo semi as a top coat will give a good finish!

http://www.ohgalv.com/Why_Galvanize_/why_galvanize_.html#PartiallyWeathered

Trying to back up my earlier statement.:D Here's some info either way.

Perfect, It feels like a chalkboard! So if i reading correctly, Procryl as a primer and Solo semi as a top coat will give a good finish!

Yes just clean and prime with Procryl then top coat with whatever you want. Solo Semi gloss was just what I thought of first. Sherwin Williams has lots of finishes that will be fine, go into a store and ask Sherwin Williams.

wayne

http://www.ohgalv.com/Why_Galvanize_/why_galvanize_.html#PartiallyWeathered

Trying to back up my earlier statement.:D Here's some info either way.


You were right Good boy!:flipoff2: