I live in a college town. I can see one of the college kids doing this. Taken from KCMQ.com.

Here’s some advice to take to heart: a blowtorch is not a good substitute for a broom! Galen Winchell of Georgia set his house on fire as he cleaned cobwebs from exterior eaves with a blowtorch. After torching his home for a short time, Galen noticed smoke pouring from the attic. (Duh!!) The fire was contained to one part of the house, but the entire home had smoke and water damage.

Stay Safe,
Bruce