Talk:The Corruption/@comment-58.166.252.245-20120408023845/@comment-3301714-20120408030107

Technically, Gray Bricks can't be Corrupted or Hallowed, but if there is stone/grass/sand below your house, it may become Corrupted/Hallowed and your house will be Corrupted/Hallowed due to the proximity to the infected blocks. Monsters won't spawn in your house if you have put up walls in it.