Reply by ibewjon

Kerosene stinks. I have also seen n those heaters throw sparks out with the heated air. Sparks and sawdust and straw are a perfect combination for disaster. In place of 7/16 osb, there are thinner sheets, and even particle board paneling at about 1/8” thick. Or wrap the framed room in plastic sheeting to hold heat and stop the wind while working. The best heaters, but would cost more or be rented, sit outside and blow clean heated air in through a duct. That is the new standard for construction jobs. The best is still find another space to rent.