Big day today. Have I ever mentioned how much I love rooves?

There is just something about putting together a really neat ("tight") roof.......
Anyway, a good roof starts with the plates being parallel. I spent a bit of time checking, and putting a couple of battens across as temporary ties. Then, the long job, but the job you must get right: marking out the ridge and the plates. I ordered two lengths of 5.1m 200 x 38s for ridgeboards, and the roof is 9885 long. That would have left me about 300mm to do a join. However, they actually delivered this:
195 x 45 x 5.4m. Look at all that overlap to play with!
Ooooh.......do I have an hour to spare for a little fun? Hell, it's my roof, and my time, so yes, absolutely. Without a second's hesitation, I did a quick sketch, and then marked out a locking scarf joint with folding wedges. I've seen a few of them in old rooves, but I have never made one.
Rather than mess around transferring the marking out to the other piece of board, I simply placed one on top of the other and used the first as a template for the second.
A minor annoyance is that the boards aren't of the same width:
No problem, as the important line is the top, and the bottom is irrelevant.
Then I ground to a complete halt. It took me a good 10 minutes to work out whether I was taking the marked line, or leaving it, when cutting out the second half of the joint. I ummed and ahhed, decided one thing, then changed my mind.......but in the end:
Bang on, first time!

It was worth scratching my head over which side of the line to cut. And it was certainly well worth the extra 45 minutes the joint took me. It locks absolutely solid just by tapping in a pair of wedges, which will make placing the second ridge board an absolute doddle. Those old boys way back when knew exactly what they were doing when they developed all those seemingly complicated joints:
Right, better get it up in the air, then. Here are some of the rafter locations marked on the ridge, with the markings transferred to the plates using a marked batten. That sentence hides an awful lot of work, both drawing work, and measuring and marking on site, then checking and re-checking. It's an absolute pain if you get it wrong (the standard error is to put a rafter the wrong side of the line):
There are a number of different ways of tackling a hand-cut roof alone, but it seemed easiest to me this time to put up temporary props for the ridge board:
I know how much you all worry about my safety on site, so I put up a scaffold under the centreline:
Then lifting the ridgeboard roughly into place was simple:
So long as the temporary position was lower than the final position, it isn't really important where the ridge sits. The rafters will place the ridge exactly:
Careful positioning of a pair of rafters at either end of the board (or at least, as far as I can safely reach on the scaffold), and we're away. At this point, it is really important to remember that nothing is stable. Don't grab onto any roof timbers as you are moving about the scaffold, or you could bring the whole lot crashing down. That first diagonal brace is critical, and I added a second for luck:
The pitch of the new roof is 40 degrees. The old roof is around 30 degrees. In those days, nobody used degrees. They worked on so-many-inches-rise in-so-many-inches-going, so this roof was probably 7" rise per foot. Anyway, I'm going to be replacing the old roof with a new one at 40 degrees, exactly the same as the one I'm building, but for a while they are going to look rather odd together:
After fixing the gable rafters in place (they have a different foot detail), and plumbing the gable to get the roof upright, it is a simple case of infilling with pairs of rafters. However, 2 or 3 pairs in and I noticed the tips of the rafters were just creeping down the ridgeboard a smidgeon, a sure sign that the plates were spreading. I eased the nailing open , then used a twisted rope to pull everything back to where it should be before nailing in another temporary tie:
All's square and true, and I got one or two more pairs of rafters done before a client turned up to drag me away to look at a job......so an early finish. I'm chuffed to bits to have the ridge in and a few rafters fixed. That's a good day in my book, even if a short one:
Other than oak work, there is nothing I enjoy more than building a good roof, so I'm a happy chap this evening. I'll probably just go up and check the bracing this evening, as I think we have another gale coming.