If there is a ton of old sealant and it’s real bad I’d recommend removing it. But in this case, I went over the old stuff. In 3-4 years, if I have to do this roof again I will be removing what I put down before adding new
That fact that you have to put on so much, says that its garbage. Dicor is horrible. Use Foever Lap sealant. 100 times better. Unless you can find Premier Pro sealant.
