When in doubt follow the guidelines from the American Burn Association's course of Advanced Burn Life Support (ABLS). Which states that leave all blisters intact, cover all wounds with a WARM DRY Sheet, I say again DRY Sheet. Also, acceptable are dry dressings like Kerlex, Don't worry about the dressing sticking to the wound bed or bullea. The dressings will be moisten and cut away, also during transport all partial thickness wounds will weep w/ serous fluid, another way to keep dressings from sticking.
The rationale behind this is very important for burn patient, KEEP THEM WARM AT ALL COST. These patients will loose body heat through evapouration, convection, conduction, radiation, and also the skin is damaged and will not retain heat. The worst thing someone can do is to wrap a wound with wet dressings, does nothing for pain, that is what Morphine and Fentanyl are for. One last point, if this is a partial thickness burn that is inspected after debridement and cleansing, it could possibly be covered with a synthetic dressing such as biobrane or transcyte. If any pertrolum product or cream has been placed on the wound, non of these synthetic dressings will adheare to the wound bed, therefore allowing serous fluid between the wound bed and the synthetic dressing, bad for wound healing.
It is always good to have a protocol set up with your nearest burn center. They would be happy to work with you.