The various materials used in set construction and the nature of the pyrotechnics involved require the use of different flame retardant chemicals and coatings. The set for the above movie " Miracle " was relatively easy to accomplish as the nature of the pyrotechnics were minimal. The flame spread protection in this case involved the use of " Escape SM " powder applied both as a liquid penetrant mixed with water and also as a coating mixed with latex paint.
Other movie set projects were more challenging to various degrees. Here are a few examples :
I SPY involved a 5 second fireball which required a penetrating chemical applied over all combustible materials on the entire set and a clear intumescent coating on the " target area ".
THE NEW ADDAMS FAMILY SERIES involved little " pyromaniacs " tossing lit matches anywhere on the set and again required a combination of chemicals and coatings.
FREDDY VS JASON involved significant pyrotechnics and therefor required the extensive use of intumescent coatings.
HRT - HOSTAGE RESCUE TEAM involved fire shooting up all four walls of the set, inside the sound stage, in multiple sustained burns. Extensive use of intumescent coatings were required. As a foot note the set was totally undamaged however they did set off a fire sprinkler in the sound stage.
