Canvas is generally considered weather-resistant, but its level of protection can vary based on the type of canvas and any treatments applied to it. For example, untreated cotton canvas is somewhat resistant to light rain and moisture but can absorb water, leading to potential damage or mold growth. On the other hand, canvas that has been treated with a water-repellent coating, like wax or silicone, offers much better protection against the elements, making it a popular choice for outdoor gear like tents, tarps, and boat covers.
