It allows for quick building. It takes a long time to build a stone castle. In those pre-gunpowder days, wood was fairly resistant to most forms of attack. All you needed was a good watchguard and a supply of water in case the eneny tried to burn the place down. Otherwise they had to assault the place with ladders and battering rams.
wood and stones
Medieval castles were built for protection and not for comfort. The first castles were built using wood but, were found to burn easily. Stone was then used in replacement of wood.
Stone castles were built because they could not burn down as ealsily as wood castles can.
William the Conqueror first built stone keep castles to show that he is not scared of the British
Early castles were built of earth and wood covered with plaster. The Normans were the first to make widespread use of masonry in the British Isles in the 11th and 12th centuries.
Castles were built out of stones or bricks.
Castles were built out of stones or bricks.
Early castles were made of wood, and were built on small hills. Later castles were usually made of stone, though when a castle was needed quickly it might still be made of wood, and some castles were made of brick.
motte and bailey castles were built out of wood
This depends on what type of castle your referring to. In the Norman times, there were two different types of castles built. There were Motte and Bailey castles and Stone keep castles (Stone castles). The Motte and Bailey castles were made out of wood and the Stone keep castles were made out of stone (obviously).
It was stronger the wood
Castles were first built in 1066, this was mainly due to the battle of hastings