Stone keep castles were built in 11th - 13th centuries.
stone castles were built with stone
In 1066 by the Normans
Stone castles were built because they could not burn down as ealsily as wood castles can.
Stone castles were built in 1277 and usually had more that one wall, the inner wall being higher than the outer ones.
William The Conqueror. Aka William of Normandy.
Stone
Stone castles, Concentric castles, Motte and Bailey Castles
Castles were built out of stone or brick
They were built with stone and in square shapes lolololololl
Stone or square keep castles were first built in Medieval England by William the Conqueror. Stone keep castles were the natural extension of motte and bailey castles. Motte and bailey castles were only temporary features (though many mottes exist to this day) while stone keep castles were built to last. (this was copyed and pasted off the website below.)Go to www.historylearningsite.co.uk/stone_keep_castles.htm for more information.
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).