When you need to drive a nail, and you need to drive a nail NOW!
A tree house is a sacred trust. A tree house is a gift one generation gives to the next. A tree house says "Go on, have fun in a way the living room cannot support." And that's why a tree house needs to be made from well-driven nails. So it doesn't dissolve under the love onslaught.
Consider this Porter-Cable Nailer & Compressor Combo your first line of defense against too much love. A 150 psi max will give a little extra oomph to each and every nail that holds those boards together. You won't need to worry about jumps, skips, hops, leaps, bounces OR body slams! Your kids can be kids and their tree house will stay a tree house.
And then, if you want to use this Porter-Cable Nailer & Compressor Combo for something else as well, that'll be fine by us. As long as you finish that tree house first.