This is something we need to be careful of. In some instances you may not have a choice, but putting water in a vented roof while on the roof is risky. Master streams, especially elevated if available and accessible would be ideal. But, again, we are limited by our resources.
Of course, if we are going to go this route, we must have a very good idea of how far this fire has traveled in the attic space. We certainly don’t need firefighters on the roof if we are taking a defensive position.
In addition, safe roof operations would dictate that we work off of a roof ladder. The pitch is not that steep, but the roof is wet and it is just safer and appropriate to work off of the roof ladder.
Keep putting ’em out and stay safe. Anyone see anything else I missed here?