This is incorrect.
What GCB stated is correct, and his image is what you see when you have 1 full roll of toilet paper in inventory. So yes, 1 roll has 32 sheets, each for 12 mins of burn time, meaning a 0.2 weight roll of tp can burn longer than a log. What's more, you can light fires with a single sheet of tp.
I only just discovered this myself by chance as I happened to have a roll of tp in inventory (to bring to a trash bin) when I stopped to cook on my BBQ. I was surprised to find that it's by far the best fire fuel source in the game. And if you get a cold you can equip it to muffle sneezes like tissues too
