Question: what is the difference between waterproof and weatherproof?
Answer: WATERPROOF: In a nutshell, “waterproof” means no water in, no water out. ... WEATHERPROOF (aka water-resistant or water-repellent): A weatherproof fabric is coated with a finish that is resistant but not impervious to penetration by water. Water-resistant fabrics will often bead up rainwater, forming drops on the surface.