Not totally finished but so far... (click for bigger)
Original hatch
Day 1 - widen hatch and put supporting beams across existing beams. Filthy work. Didn't realise that the developer I bought it off had put a suspended ceiling in the landing area, that made things a bit more complicated.
Day 2 - Give the hatch a box/carcass
Day 3 - Architrave
It will soon be painted white.
Day 2 - Started the boarding
Day 3 - Most of the rest of boarding done
You may notice I've not laid the tongue & groove as it should be. I've gone tongue-tongue, groove-groove. My original reason was because I wanted it to be easy to lift any boards in future, and as I've been laying the boards it became an even better idea because the beams I'm screwing into aren't level/even in the slightest so getting them to align nicely would have been impossible. The house is about 150 years old so that's not a surprise.
The best way would have been to build a frame across the area to lay the boards on to ensure it was totally flat. That wasn't going to happen.
Day 4 will be laying any extra boards and bits of boards that need doing.
I'll need to make a change to the door when the ladders arrive. Once that's done I'll crack open the paint.