a little more progress on The World’s Most Awesome Treehouse(s)! i made space around the trees with cripple joists, added the remainder of the floor joists and added deck blocking for stability. i think i decided to double up the end joists along the 16 foot side like i did along the 14 foot side for just a little bit more rigidity so i still have that to finish.

but after that i’ll be ready to add the decking and then the guard rail and balusters!

one big remaining decision – to use pressure treated decking or not? i think i’m leaning towards pressure treated to help prevent decay. i’m thinking that anything i put on unfinished decking to prevent rot is going to be at least as unfriendly as pressure treated lumber. suggestions?

here you can see a bit of how i put in the cripple joists to give the trees room to grow while having 16″ on center joists. it’s hard not to get a little vertigo looking 12 feet down through the joists!