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You would need one powerful flame such as oxy acetylene and be torching directly on that flooring to get it to flash. That is all it would probably do..is flash. No one is going to do that....even if a whole flaming glass rod landed on the floor and rolled around it probably wouldn't do anything except break.
Edited to add: My whole horse trailer is aluminum. Top, bottom, sides, floor...all of it. That is what Featherlites are known for.
Lorraine
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