Yesterday, I measured the distance from the axis of the tree to our "endangered" roofline.
It was 9-feet!
This photo shows the result of two "trimmings" of the deck around the tree. Our Blue Spruce has some "enlarged-blistering" damage to the bark on the other side.
There's about four feet of empty space from the deck to the ground. What appears as a very dark area below the deck is galvanized steel "rabbit-fencing". At the time, the neighborhood was experiencing serious depredations of local beavers!