Laying tongue and groove boards in the attic - tips

PS: If you really care about time, you have to borrow a pneumatic nailer and a miter saw with laser targeting optics. That's how the pro does it. I had plank flooring in 2 apartments and it was always nailed, not screwed ;) And in some places it flexed so much that sometimes I thought if I jumped now, I'd end up sitting on the neighbor's couch below me.

Transporting 5m is still the smallest problem, it works easily with a trailer. But it doesn't matter if you can no longer get the size through the house and the retractable staircase. Basically, labor-saving planning is an advantage. Because everything always takes much longer than planned, and it's not just the joining, but also the sawing beforehand as well as working with several formats at the same time. I would definitely screw the boards; at some point, you might be glad to be able to open them without damage. You can also nail the slats. Personally, I'm not such a big fan of manual nailing, your hand quickly gets tired.

I think it's quite good for a start.

It's a pity that you used visible screws. There are special floorboard screws that are screwed in concealed.

well, there are worse things. It's "just" an attic. Here is the finished end product.

I would tighten the protruding screw heads a bit more. You tend to catch on things like that when carrying a heavy box and can’t see anything. But it looks very good, I didn’t put that much effort into it :D