Anytime you plan on using a urethane
Polyurethane
Polyurethane is a polymer composed of organic units joined by carbamate links. While most polyurethanes are thermosetting polymers that do not melt when heated, thermoplastic polyurethanes are also available.
Poly(methyl methacrylate)
Poly(methyl methacrylate), also known as acrylic, acrylic glass, or plexiglass as well as by the trade names Crylux, Plexiglas, Acrylite, Lucite, and Perspex among several others, is a transparent thermoplastic often used in sheet form as a lightweight or shatter-resistant alternative to glas…
How do you apply urethane clear over enamel?
Best method for applying urethane clear over enamel is to wait 72hrs after application then wet sand the finished enamel with 1200-1500 grit. Then apply a mid-coat adhesion promoter followed with 2-3 coats of prepared urethane clear. Then follow manufacturer’s recommendations for buffing.
What is the difference between urethane and acrylic enamel paint?
In conclusion, there are a few key differences between these two types of paint. Acrylic enamel is easier to work with but not as durable while urethane is more difficult to apply but will last longer. Consider your needs and budget before making your final decision.
Can you use polyurethane over enamel paint?
Polyurethane can be used over enamel paint to provide a very strong and vibrant finish. Polyurethane when used on enamel makes the paint coating resistant to factors that can ruin it like moisture and scratches. The enamel paint is also given a glossy sheen that makes the enamel color vibrant or bright. But that’s not all.
Can you mix paint and polyurethane together?
Mixing paint types is very common but when it comes to polyurethane, it’s not usually a good idea to mix with any other paint. Oil-based polyurethane especially should never be mixed with enamel either water-based or oil-based.
How long do you wait to apply urethane to enamel?
How long does it take to recoat a window?
Can you use clears over enamel?
Can you sand an AE finish?
Can you clear acrylic enamal?
Does Aklyd enamel fade?
Is Omni paint cheap?
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Could I, Should I put Acrylic Urethane Clear over Acrylic Enamel
So it's been about 50/50 split on what I have read on this subject. I have painted many backyard projects with cheap Acrylic Enamel Martin Senior or Paint for Cars Brand with good results...after wet sanding and buffing of course.
clear coat over acrylic enamel - AutoBody101.com
I've painted my Bike's fairings with an acrylic enamel two tone paint job. I did some research on this site and spoke with my cousin who has been doing bodywork for years.
Problems with applying clearcoat on enamel - [H]ard|Forum
IIRC, acrylic is ok on top of enamels and lacquers, as it is "cooler" than the other solvents, but not the other way around. My preference is to buy matching brand and series color coat and clear coat to avoid potential compatability issues.
What clear coat paint can be used over enamel paint? - Answers
yes u can use clear coat on ur enamel paint but first u hav to put primer then paint coats two - three coats depending on the requirements and then apply the clear coat single or double as ...
Help..urethane clear over enamel? | The H.A.M.B.
I've done this before with enamel and laquer it works fine, with enamel you would want to put the clear on before 24hrs and after 12hrs or you will need to sand which would be ok unless it's a metalic finish that would be require a re-coat with color and then clear within the time window.
Can You Use Clear Coat Over Acrylic Paint? – Picky Pens
In particular, we have noticed a spike in the number of people reaching out to ask if you can clear coat over acrylic paint so we wanted to publish a dedicated article going over this. Our goal is that this article will be able to help as many of our readers who are considering using clear coat over their acrylic paint as possible and help you get the best possible results.
What Type of Polyurethane Should You Use over Enamel Paint?
The best type of polyurethane to use over enamel paint is oil-based polyurethane. This is because oil-based polyurethane hosts the most benefits for enamel paints. Oil-based polyurethane is thicker, stronger, and will generally last longer on enamel paint.
Which is better, spray enamel or polyurethane?
Asides from the chemical hardening process of both topcoats, there are also differences in their finishes. Polyurethane is known to be thicker and more durable than spray enamel. Spray enamels on the other hand are known to dry faster than polyurethane, especially oil-based polyurethane.
What is spray enamel?
Spray enamel refers to enamel paint that comes in spray cans. These enamel products are usually used to seal enamel paints. This makes the spray enamel a top coat or sealant. However, it’s not the same as polyurethane.
What to do when you are done sanding enamel paint?
When you are done sanding, dust the enamel paint to get rid of sanded dust. Then you should…
Why won't polyurethane bond?
The polyurethane will not bond properly. This is because oil-based enamel when dry forms a glossy film that doesn’t allow water-based paints to stick properly.
How to protect enamel paint from splatters?
Put a large drop sheet on the floor to protect it from paint splatters. All objects and furniture on or around the enamel painted surface should be removed or covered.
Why do you sand polyurethane?
The purpose of sanding between coats of polyurethane is to remove dust nibs that landed on the coating while it was drying.
How long do you wait to apply urethane to enamel?
To apply urethane clear over harden enamel you must wait 24hrs after application. Other wise the urethane will react with the enamel and you will have a mess. Trust me, been there.
How long does it take to recoat a window?
When did you paint it? You really need to call the PPG tech line to find out but usually the recoat window is something like 24 hours. But honestly, call the PPG hot line and they will let you know.
Can you use clears over enamel?
The tech sheets for all the clears that I use all say that it may be applied over catalized (hardened) acrylic enamel. I have only actually done it once, on well cured paint, after wet sanding with 1200 grit paper, and it was beautiful. It was a metallic also but the 1200 was not enough to mess up any of the "glitter".
Can you sand an AE finish?
There is one other caution to the recommendations to sand and clearcoat your AE finish. If you have painted a solid color then sanding will not be a problem, if you have used a metallic paint then I would not recommend sanding.
Can you clear acrylic enamal?
There is a safe window that you can clear over the acrylic enamal with out sanding it . It works great :mwink:
Does Aklyd enamel fade?
The aklyd enamels will fade/chalk, particularly reds. Wax it. If it's a single stage type urethane, there's no advantage (at least that I can see) that clearing will give, it's already got the same UV protection as clear.
Is Omni paint cheap?
This omni is great cheap alternative to some of the expensive paints out there! But some colours don't cover as easily but there's always a way around that :sweat: