The side is wider than the clapboard sticks. This wasn't a problem for most of it as the board run is interrupted by the kitchen bay or by windows. Where a board runs completely across, I was careful to stagger the joins.
I am getting into a routine with this and it is going a bit faster. I cut the pre-painted board to size (using cardboard templates for complicated shapes like the stair window) with either clippers or an X-acto knive, daub some paint on the cut end, apply QuickGrab (and possibly Tacky Glue) along the reverse top and bottom edges of the board, let it all dry briefly, then apply it to the house. If it is QuickGrab, then just holding it with finger pressure for several seconds is sufficient. I did this whole side with about 2/3rds of a tube of QuickGrab.
So far (touch wood) I am not worried about running out of clapboard as there looks to be loads still in the box. You can use up lots of short bits on all the complicated fussy cutting, so I don't feel that I am wasting very much.
Merry Christmas everyone! Hope Santa brought you lots of good minis.