Stone and Mortar.
11th century. This is when Chepstow Castle began construction and Chepstow is the first stone castle made.
Coity Castle was made of stone.
Warwick Castle is made from Stone.
Headingham Castle seems to be believed to have been a concentric castle.However, it is a Stone Keep Castle.
warwick castle was first made out of wood then it was rebuilt out of stone :) posted by zak.g
stone
Kimbloton Castle is made of stone, with a timber foundation.
carisbrooke castle is mabe of stone
Stone?
basically a castle inside a castle made of stone
Stone
stone and cerement