Pavlvs wrote: |
The real stone was there to protect the archers from fire and flaming arrows. If a flaming arrow stuck into a wooden wall which was painted, the fire would spread due to the paint being flammable even when dry. The decks were easier to extinguish but the if the castle was framed in wood, it was cladded in stone much like the houses today built of wood and covered with brick veneer. |
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That's the first time that I've ever heard of that, and I have read many articles and books on Roman military history and archaeology over the past two plus decades.
Regardless, the Romans would have had several alternatives to oil paint, and several alternatives to stone for fire-resistant coverings. For example, they covered siege towers, sheds and galleries with untreated animal hides, with or without layers of wet seaweed under the hides. If that was good enough on land, it ought to have been just as good, if not better, at sea.
Besides siege equipment, another obvious ancient parallel would be elephant howdahs (towers), some of which are also depicted in contemporary art as looking stone-built. Obviously, they would not have used real stone for elephant howdahs, and the consensus is that they used wood with hide coverings.