Count your blessings southern seacrafters

[oldfielder]

One thing I learned about propane heaters last winter redoing an 18 foot Steiger deck and stringers is that they create quite a bit of vapor, so depending on what you are doing just keep an eye on that. Depending on the dew point, temp, etc,once you turn them off you can actually create a situation where you create enough vapor inside your structure that you will get condensate once you shut the heater down.
It was more important when painting than when glassing.