The best tent waterproofing option is to purchase a new tent specially made to resist water. You may think your existing tent is waterproof, but it may not be worth the risk to find out. You will need a specialized tent from an outdoor equipment store which has been coated with a special water resistant material. Make sure to purchase one with features that prevent dew formation inside the tent as well.
If you want to waterproof your tent more inexpensively, you can purchase the water resistant material and apply it yourself. The best tent waterproofing substances come in sprays, gels, and waxes. You will want to lay your tent in the backyard and apply carefully to every surface. Turn the tent periodically to make sure every bit of exterior surface has been covered.
Another possibility for cloth tent waterproofing is to purchase a special waterproof shield for your tent. This shield goes over the tent like a large umbrella. Because it is waterproof, water beads up on it and flows outward, toward the ground. When set up correctly, the water flow should never get near your actual cloth tent.
If you're a dedicated open-air camper, you don't need to worry about tent waterproofing, but there are some things you can do to keep yourself dry. A large tarp can be set up above your head. If erected at a slight slant, it will conduct water away from you and toward the ground. This method won't get in the way of enjoying the open air, and the tarp is easier to set up than a tent.
The best tent waterproofing methods should be able to prevent wet feet, damp sleeping bags, and water dripping onto your head. Nobody likes being cold and wet when they're trying to enjoy the great outdoors, or having to huddle around the fire first thing in the morning to dry off. Fortunately, waterproofing your tent is simple and will make camping much more enjoyable.