>>4337645This, also in Europe, if you had the money, you would white wash them, next to making the fort white, it also made it very fire resistant. So while not technically impossible, it would be a bitch to catch it on fire.
As, fucken lot of city trash here, even dry wood does not just burn from fire being put in it, it requires a ton of heat, so either concentrated heat(flame thrower, Byzantine Empire has this), or a shitton of heat , think barrels of flammable stuff thrown at the wall, then set ablaze by a fire arrow, or three.
Lastly almost no one would make an100% wooden object, stone, dirt, and mud, and even man made chemicals would be put in as mortar, all of which had a cooling effect. Fact is few castles ever fell, the two combatants normally would parlay before things got that bad. After all, why even attack the damn thing, unless you wanted it to begin with, if all you want is for the inhabitants to die, then siege them, and let them starve, or die of the plague, of something.