Does burning damage stack in any way?

Question

I am trying a guardian build which revolves around burning as many foes as possible for as much damage as possible. However, when I quickly use two burning skills, I notice only one burning icon on the foe.

Does burning stacks in any way? Or does casting two burning spells on the same target amount to nothing?

To elaborate a little, suppose spell A deals 100 damage over 10 seconds and spell B deals 200 damage over 10 seconds. I cast spell A, and after 5 seconds I cast spell B. What is the expected behaviour?

What is the behaviour if I cast spell B instead of spell A and vice-versa?

Answer 1

Burning, Poison, Chilled, and Crippled stack in duration instead of intensity. It will show only one stack, but if you watch you'll see the duration increase. If you apply multiple conditions with different damages, the duration will seem to increase. This, however, is no more than an attempt to unclutter the UI (user interface). Once the duration of the first condition completes, then the second condition will begin. Despite these separate durations, however, cleansing a condition will remove the entire condition (no matter the duration or intensity).

Example:

You use Skill A to burn a foe, and then Skill B to burn the same foe. Skill A's burn lasts 10 seconds, and Skill B's burn lasts 5 seconds. When applied, the burn duration will be 15 seconds. Skill A's burn will run for the listed 10 seconds, doing the damage as described in Skill A. When this finishes, Skill B's burn will start to tick, doing the damage as described in Skill B.