Minecraft wiki entry for Thunderstorm_survival, associated text: First of all, the only border between you and the outside must not be wood, or any other flammable material unless you have a Lightning Rod. If it is, one lightning strike could set your whole house on fire, which could destroy your home, possibly set you on fire, and allow mobs to get in. If you don't want your house to be burned down, consider making it out of non-flammable material. Otherwise, you will need to completely cover up your house with a material that does not catch fire, such as cobblestone. If you don't mind your house burning down but want a quick way to be enclosed from the outside for your own safety, make a tiny hut around yourself, made of cobblestone, dirt, or another in-expensive non-flammable block. Although wooden doors can catch fire, they will not burn away or spread the flame so you do not have to worry about them.