The answer to this question depends on the fire pit you buy in addition to the deck you have. It would help if you never used wood-burning fire pits on a hardwood deck unless a fire pit mat is also present as a heat-resistant barrier between the wood and the fire pit. Without a wall of this kind, wood-burning cavities can cause various issues for concrete patios, including spalling, cracking, and even explosions. Brick patios and patio pavers should withstand the heat without any problems. The vast majority of fire pits and fire tables that run on propane are designed for use on decks made of wood, composite material, or concrete; nonetheless, the heat might cause discoloration. You should always check the technical characteristics of the exact model you are interested in purchasing.