Re: waxed gelcoat?
I'm going to be making some gelcoat repairs myself soon and have asked the same question about using multiply layers. The latest and greatest info out of Jamestown Distributors indicates that I can use a prevail sprayer with a wax gel and apply muti layers without sanding as long as each coat is put down within minutes of each other. I want to use thin coats however I also want to have sufficient layers to gain maybe a 20 mil thickness. Not sure how many layers would be needed for that thickness. Still learning.