Quote Originally Posted by mlochala View Post
Unless the weather is just like that all the time there or it's some kind of urgent need, I can't understand why anyone would do that in that kind of weather. Just isn't worth the safety risks.

Not only that, but wouldn't the moisture trapped behind those shingles be a bad idea as well?
The workers view not having money to feed their families if they don't work in inclement weather as an option regardless of the risk factor.
Rain would be worse than snow, snow can mostly be brushed away as the shingles are lain. Any remaining moisture left under the shingles would be minimal and eventually would evaporate away or gravity would cause it to coalesce and drain out from under the shingles eventually.