The next step in the build was getting the roof joists in place. The joists, in this case, are 2X6s that run from the centre beam, down onto the wall, and extend a bit past it to create an overhang of the roof. In theory, although it appears complicated, they should be fairly straight forward. They are cut at an angle where they attach to the centre beam. At the wall they have a notch, called a bird's mouth (it looks nothing like a birds mouth), that rests on top of the wall. The part that extends past the wall is a rafter tail, and it ends at a cut the same angle as the beam side, and both of those are plumb, or straight up and down.
Knowing the pitch of the roof should allow you to fairly easily figure these angles and cuts out, provided you know the technique, and how to use a speed square (which is one of THE handiest tools to own). This is a speed square, and it is marked with different scales, including pitch.

I won't go into the process, as it will get confusing no doubt, but trust me it is relatively simple, once you know how. So my roof is a ten pitch roof. So once I had the measurements I needed and double checked my angles and calculations I laid out my first joist and made the cuts. Now a smart man, at this point, would drag that joist up to the roof and try it.
I am not a smart man.
Thinking I was smart, and efficient, I proceeded to use the first joist as a template and cut, oh, probably 20 joists. Hey, think of the time I'll save not having to go and cut one every single time. Having done that I went up on to the scafflolding and wait, that's not right. The joists didn't fit right. I could not figure it out. I double, triple checked the measurements, my roof is a 10 pitch roof, why did they not fit?
My roof pitch, was not 10. If you remember back to when I built the gable walls, I laid out the wall with chalk lines on the floor and built it in place. Somehow I got the pitch wrong and my roof was an 11 pitch roof (meaning for every 12 inches of run it rises 11 inches). Actually its just a shade under that. So a screw up the previous fall, coupled with a massive screw up of not checking and pre cutting a bunch of lumber, left me with 20 or so useless 2x6s. Due to the nature of the cuts already made I couldn't just adapt these to be new joist. Eventually I found uses for most of them, but I needed to go and buy lumber to replace these ones so I could get on with the job. I may have used one or two bad words.
I had a few 2x6s left so I was back to the drawing board and after much consternation and fiddling I finally got the a joist to where I wanted it be, and fitting properly. Then I cut one more and put that one up. It was a lot less efficient but I only cut one or two joists at a time, install them then repeat the process. But, I was finally on my way to having the cabin framed. 
It was slow going. Occasionally I'd have Leah's dad helping me, but mostly it was me. And it would be up on the scaffolding for attaching the joist on the centre beam, then down, and then up on a ladder to attach it to the wall, cut another one, repeat. There are, let me see..., thirty-six joists on the main roof, and I was at this from end of July to mid-August.
The joists over the deck involved some creativity as I couldn't use scaffolding there. So I finished the cross piece that joined the two extensions of the top plates together, supported the middle of that with a temporary column, and then fashioned some walkways between that and the upper window.

Looks a lot sketchy than it actually was. And I had to figure out a way to deal with the twist in that centre beam. Eventually I attached the two joists to it, and then pulled them down to twist it back straight, and attached them to the plates.
And in case I forgot to mention it, it sure is pretty up there.

Eventually all the joists for the main part of the cabin were done, and I had mostly figured out how I was going to make the ones for the porch. A big step towards getting things closed in. 
Recent Comments