Having some room upstairs has allowed us to spread out a bit, Reuben's little bedroom has been all trimmed up and painted, finally he has a private space to hangout and its a lovely room with windows that face north and south. Unfortunately the bay window, facing north, will require a bit more work as is needs to be totally rebuilt, the other window had no architrave and nor did the inside of the doorway, the room also required skirting boards and scotia trim in all the corners, all these were done with pre-primed timber products to make painting easier. The floor we covered with Masonite panels, ready for future carpeting.
Painting pine paneling like this can prove problematic if you using acrylic paint as the tannins in the knots and sap lines will bleed out through the water based paint leaving brownish stains. To seal the boards before top coating we primed the paneling with a shellac based paint called B-I-N from Zinsser. We then used copious amounts of fillers to fill all the small gaps, cracks and holes in the cheap pine linings, before painting the room with two coats of my favorite white, "antique white USA" from Dulux.
Ultimate Performance Primer-Sealer