u/Big-Science-7611

I installed the TABs for my treehouse about a year ago and the one at the bottom of my tri-beam has a lot of shiny black liquid around it. The one at the top looks clean (two pics of each). The TABs were installed about a year ago, but I think the black liquid only appeared in the last 4-5 months. I’m nervous that there is an infection that will kill the tree. So far there is no movement in the TAB itself. Has anyone else experienced this?

The black stuff has a slightly sweet smell and a bit of a slimy texture. The tree is a Tulip poplar, probably around 100 years old and about 3.5’ in diameter at the lower tab.

I had originally planned to putting a window AC unit in, but I have an old AC unit. The problem is it’s too big, so temporary solution to make the temperature inside reasonable while I work today. It’s going to be 90*F+ this weekend.

Should I buy an AC that fits in my windows or cut a hole in the wall for the AC to fit?

My thought was if I put it in the wall, I can put it up high and get better circulation. Obviously if I put it in the window it’s easier to take in and out.

I am leaning towards just a new small window AC unit, but looking for opinions. I am not concerned about the cost difference. A new AC is ~$150, I’ll probably spend 8 hours framing, flashing, etc the hole in the wall and maybe another $50-$100 in materials between trim, bracing the bottom, etc.

I have been building this two pole one tree treehouse. I originally wanted to have either a table with bench or bench chair between the two poles, but I have quite a few a bit of sway in the treehouse. I had temporarily added some 8’ boards from the posts to the beam and that helped quite a bit, but there was still some movement side to side.

Recently I put an X between the poles with enough room to have the bench, but it seems like it did very little being up so high. There was less sway with the temporary boards. I had also previously put the corner braces, but they are just hanging there for right now with small screws. The X is bolted with 5/8” carriage bolts.

I feel like I have three choices:

1. Give up on having the bench and just do a X from the bottom to the opposite top on both sides. Maybe enough room for a small seat on each side.
2. Do a brace from the bottom of the pole on each side to the top center of the beam. Leaves room for a smaller bench or table in the center. Plus figure out how to fill the holes I drilled since none will be used.

Also wondering if I should put additional braces on the front support of the deck.

Any other thoughts on the best way to reduce the swaying?

Edit: Adding more details from below:

The full platform is 10’x16’. The house itself is 10’x9’ (deck is 10’x7’). The roof pitch is 12/12. It is about 13.5’ tall. From the bottom of the floor joist to the top of the concrete pillars is 8.5’. Roof is also 3/4” plywood with 2x6” rafters and a 2x8” ridge board.

It’s triple 2x8 beam sitting on 6x6s. The corner braces are 36” at the longest point. Floor joists are 2x8” and spaced 12” OC except that in front of the tree because I wanted to center the deck post.

Chest height of my tree is about 42”, it’s a tulip poplar.

The floor is 3/4” plywood inside the house screwed every 12” with 1 5/8” screws. The outside is Smartboard, nailed about every 12” vertically. 16” OC 2x4 studs.