You actually didn't hijack the thread since I was the one that asked "Was that Super-O track?"
I got half the roof complete. As I said yesterday, you could do a real roof in the time it's taking to do this little one.
I was able to carefully insert the starting strip under the previously done 1st row on the roof I completed. I was able to pry up the shingles far enough to get it under. At first I tried putting in a full-length strip, but that proved problematic. I cut the strip into thirds and was able to handle them better. I used some thin white glue to re-connect the shingles down to their new attachment. While it's not perfect, far from it, it did help stabilize that first row. Slate shingles don't droop. They break, not bend.
After finishing the first big roof, I did one of the gable roofs. I needed a really sharp #11 blade to trim the valley shingles without tearing or dragging them. I ended up using two knives. One for general cutting work and one just for trimming the shingles after installation. The blade has to be REALLY sharp. In this picture you can see the new way I'm installing the cap shingles. I'm using Rusty Stumps cap material, but cutting them to .3" each and then overlapping them about 3/64". It comes out looking pretty prototypical.
I did the front small roof and then the clerestory roof. I ended the session with the dormer roof, where again I used this "new" way of capping the shingles. With all these other roofs, I used a starter strip under the first shingle course.
This pic shows how I'm handling the top shingle course. I lay the row down, crease the excess over the roof peak and then trimming the excess with a new single-edged razor blade. You have to be careful in this step so you don't dig in a cut up shingles that shouldn't be.
Here's that small roof complete, and then a shot of the entire half roof that's now "weatherproof".
The discoloration is drying permanent fixative. I figure it might help hold everything down.
Since I couldn't help myself, here's the kitchen temporarily attached so I could admire it all.
As George Peppard of the "A-Team" used to say, "It's great to see a plan come together!"