I have a beefier 2x2 construction canned ham. Its a 1969 Terry. I have this top bunk across the front over the window and lower couch/bed. This upper bunk has an additional pull out area to extend it and has special aluminum machined brackets to support the movable extension. We currently ise this area for storage but it has cute tiny windows on either end and a decent amount of space. I am considering using this space for one of my kids. They have outgrown sleeping in the same twin bed in the dinet area. I'm just concerned about the weight limit. If we put a bed and a kid or both kids are playing up there its going to be about 150 lbs with heavy movement. I also worry about my roof panels as they are crazy little boys. Has anyone had issues with the bunk not holding? Ours is supported by three walls.
Also, What type of mattresses do you all use for these bizarre beds? I want to have something comfortable.
Lucky for you, the Terry isn't a canned ham, thus, more strength for the bunks. If you have rebuilt the walls and are sure the wood behind the bunk brackets is sound, it should support two kids easily. If it hasn't been rebuilt, I wouldn't chance any weight in the bunk.
My daughter has used the hammock style bunks in both the Shasta Compact and the Airflyte, and my friends kid uses hers in her Frolic which has a wood bunk. Both of our kids are 7, mine weighed 50lbs and has had another 50lb child up there with her at the same time.