2006-09-14 11:40:23 · 9 answers · asked by Fritz 1 in Home & Garden ➔ Maintenance & Repairs
Hiya Fritz...
More info is really needed before this one can be answered properly...However, yes - vinyl-acrylic paint will stick direct to galvanized steel.
If this galvanized is new, the surface should be solvent washed with mineral spirits to remove surface oils before painting...If the galvanized is old and weathered, it's always a good idea to detergent wash the surface to remove dust, dirt and oxidation (the white filmy substance on galvanized) - then "pickle" the surface with a vinegar and water solution to neutralize the zinc's alkalinity before painting. Vinyl Acrylic and Acrylic paints will stick very well to prepared galvanized...
Now for some caveats - Galvanized steel can sometimes be a tricky substance to paint - In the galvanizing process, a layer of zinc is joined to a steel substrate...this zinc (non-ferrous) sacrifically protects the steel (ferrous) from oxidation. Zinc will oxidize in the form of "white rust" - the white filmy substance on exposed galvanized. This oxidation will not attack, or eat into its host as the oxidation (rust) from steel will. Unfotunately, this white rust can sometimes be a problem for latex paints (acrylic, vinyl-acrylic etc.) to adhere to and must be addressed prior to painting...
The other issue is that zinc is very alkaline, thus the need for "pickling" with a mild acid treatment (there are several commercially packaged acid cleaners on the market designed for treating galvanized prior to painting, a vinegar and water solution works also)...Since zinc is so highly alkaline, NEVER use an alkyd coating for direct contact with galvanized. This includes alkyd metal primers and alkyd modified latex coatings... Alkyd resins will react to an alkyd surface and - if moisture is present - saponification will occur and result in paint peeling.
Galvanized Metal Primers and Epoxy Primers work best for coating galvanized in extreme environments. Depending on the manufacturer, Galvanized Metal Primers resins may be water soluble (acrylic, vinyl-acrylic) or solvent soluble (solution acrylic, chlorinated rubber, epoxy esther etc.) - regardless, they will adhere very tightly to properly prepared galvanized and usually may be topcoated with any type of conventional coatings.
Keep in mind that when painting with most latexes (acrylic, vinyl-acrylic etc.), the cure time (time at which product reaches maximum adhesion and hardness) of such products may be anywhere from 7 - 45 days - During this time period, care should be taken to protect the paint film from abrasion or extreme handling.
I hope this information is more helpful than confusing...and sorry my response has been so lengthy (believe me, I gave you the abbreviated version)...If I can offer additional info regarding this matter, please feel free to e-mail me. Good luck on your project.
Ric
2006-09-15 01:43:33 · answer #1 · answered by ricknowspaint 3 · 1⤊ 0⤋
I've been in the paint business for several years, and I have to say that all the answers posted so far are somewhat correct. Here is what I suggest:
Vinyl acrylic (a co-polymer) will not adhere to galvanized, or any other steel, without a primer applied under it. And as much as the general population loves Kilz, it's really not a very good product, and it is for indoor use only. Additionally, depending on the condition of the steel, it may need to be slightly etched with a galvanized etching liquid (similar to alcohol) before the primer will adhere properly. At the very least, clean the galvanized with lacquer thinner before anything else. After cleaning, apply an alkyd (oil) based primer. Typically there will be one packaged for galvanized and aluminum surfaces. After that is cured for 24 hours, you can then put your vinyl acrylic paint on the steel. Remember, the glossier the better for this application. Abrasion resistance and adhesion is the key here.
Also, I recommend a good paint company such as Dunn Edwards Paints or Benjamin Moore. I would never, ever go to a big box retailer for paint related issues. Stick to the real paint specialists - the ones that manufacture and test the products. I hope this helps. Good luck!
2006-09-14 17:22:33 · answer #2 · answered by seanphamilton 2 · 0⤊ 1⤋
Paint For Galvanized Metal
2016-11-10 09:15:31 · answer #3 · answered by ? 4 · 0⤊ 0⤋
No. Even if you get it to go on the way you want it will very quickly peel and flake off. If you want to paint steel then you have to buy paint that is made especially for painting over metals.
2006-09-14 11:52:26 · answer #4 · answered by spiderspell 3 · 0⤊ 0⤋
for painting over galvanized steel.first use a 2 packs etching primer for primer wait for it to dry,follow by finishing coat.
Remember,must use etching premier for undercoat ,only then will the finishing adhere to the paint
2006-09-17 21:05:02 · answer #5 · answered by leo 4 · 0⤊ 0⤋
If you are talking about latex paint, the answer is yes. You have to prime first. Best primer is Kilz. You can buy it at Home Depot or Lowes or any other hardware store.
2006-09-14 16:28:50 · answer #6 · answered by nonna_barbara 2 · 0⤊ 0⤋
Very simple. Get a good metal primer first and cover.let it dry completely Then your ready for the paint job.
2006-09-18 10:56:27 · answer #7 · answered by robosscat 2 · 0⤊ 0⤋
It may last for a short time but will begin peeling with excessive heat and even cold temperatures.
2006-09-14 11:49:20 · answer #8 · answered by skyeblue 5 · 0⤊ 0⤋
No.
Vinyl paint will not work on steel.
You need an enamel based paint.
Also, you cannot use vinyl paint on enamel paint.
2006-09-14 12:09:03 · answer #9 · answered by ICG 5 · 0⤊ 1⤋