Amine blushing under metallic

Every winter season sees the same issues arising when it comes to amine blushing. However many installers are not aware of what amine blushing is, what causes it and how to overcome it.

The pictures below are a few examples of a metallic floor that has been installed over a basecoat with amine blushing:

This is a very obvious example, yet there are plenty of more subtle cases where installers can't see the symptoms so easily and don't know what to do about the defects they are seeing.

The video below discusses the problem in more detail:

So, what problems have you witnessed as a result of amine blushing? Let me know your thoughts in the comments below.

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Roger Hildebrand wrote:
27 Sep '20 9:25pm
It’s better to avoid it by understanding that high humidity and low temperatures cause it!
Resin Jack
Resin Jack replied with:
10 Oct '20 4:13am
Hi Amar, If the climatic conditions are only a problem on the day then you delay the start of the coating project. However if you are living in an environment where you can't delay the job then you have to choose products that are not susceptible to amine blushing. I have been working with epoxies for nearly 20 years that do not blush. Take Care @resinjack
Amar Chavhan replied with:
8 Oct '20 2:21pm
Hi but how to avoid it in humide and cold weather
Resin Jack
Resin Jack replied with:
28 Sep '20 12:06am
Thanks for the comment and yes you are right Roger. Cold and wet conditions are the most likely to catch you out. In those instances, researching a system that does not blush will save you much heartache. Take Care
Scott Cameron wrote:
27 Sep '20 8:37am
Well this is a very good topic. Maybe similar to the dew point problem. Especially with slow drying epoxy's.
Resin Jack
Resin Jack replied with:
28 Sep '20 12:04am
Thanks for the comment, Scott. It is certainly linked to Dewpoint... As for slow curing epoxies, you are right if they are susceptible to Amine blush. As Isophorone Diamine (IPD) are very common curing agents that its what most people are used to blushing. However, there are curing agents that don't blush. Yes you do have to pay more for them but if you can't control the climatic conditions you tend to consider them a good investment.

Take Care and keep smiling