Final answer:
Chimney flashing is indeed necessary to prevent water penetration where the chimney meets the roof, and wood can conduct electricity, allowing lightning to travel through a tree.
Step-by-step explanation:
True: Chimney flashing should be installed where the chimney stack meets the roof covering to prevent water penetration. This is an essential component of roofing that ensures the joint between the chimney and the roof is watertight, which is critical to prevent leaks and water damage to the structure of the home. Similarly, despite being an insulator, wood can indeed conduct electricity, and therefore lightning can travel through a tree to reach the Earth. It's also worth noting the mention of a wood stove as an efficient device, which is designed to minimize heat loss through the chimney by containing most of the heat for use within the home.