Ordering epoxy and worried about amine blushing?

[bzajdek]

I have never used epoxy and I am worried about the blushing that might happen. Can anyone explain this process and how to overcome it? I am repairing a transom and installing two bench seats with other minor scrapes and such.

 

[Bob_VT]

Re: Ordering epoxy and worried about amine blushing?

There is no simple answer.

Google epoxy blushing and be prepared to do some reading.

 

[Bondo]

Re: Ordering epoxy and worried about amine blushing?

Ayuh,...

Short story is,...

Prep the work area,+ start laying up your work,...
If the task can't be completed in 12/ 24hrs,... Or Less...
It'll blush,+ you'll need to Sand again...

Anytime work is left for a time,...
Sanding will be necessary before you restart the lay-up...

 

[Mark42]

Re: Ordering epoxy and worried about amine blushing?

Depending on how quickly the cure rate was, and how humid it was, the blush was non-existant to bad (my hardtop project). The good news is that it just washes off with a soft scrub brush and water w/dish detergent. Follow the manufacturers instructions. Often if you are re-coating within a few hours, no sanding is needed to get a chemical bond.

I used a bucket with soapy water, scrubbed the area clean, and washed clean with the garden hose. I had read various accounts about how hard it was to remove, but I found it did not apply to my project. I used epoxy from fiberglasssite.com.

But again, the most important thing is to follow the manufacturers instructions/directions.