There are two main kinds of fabric that are used for rv awnings. Finding the right awning for your needs can be a matter of getting the right fabric. There are two main choices out there for the fabric that makes up your awning, and there are positives and negatives for each of these fabrics. You should carefully consider these points before making a purchase or replacing an old awning. By thinking through what kind of fabric you need or what you are looking for, you can find a great awning for all of your outdoor needs. There are two main fabrics that make up the majority of commercially available rv awnings. One fabric used for rv awnings is acrylic. This is a woven fabric, which allows for air to circulate and move through the fabric. This allows the fabric to dry quickly if it gets wet. The one main drawback of acrylic is that it is water repellant, but it is not waterproof. This means that if the awning is kept up during a storm, it will not work perfectly to deflect the rain. If you plan on traveling often during rainy times, then keep this in mind when choosing your awning. The other main fabric used for commercially available rv awnings is vinyl. Vinyl is yet another fabric that is water repellant but not waterproof. Something to keep in mind is that touching a wet piece of vinyl or acrylic on its underside will let the water seep through in that area. This is something you should keep in mind when handling an awning in a downpour. Much like a tent, the fabric will start seeping moisture through and will get you – and your protected possessions – all wet. This shouldn’t be a problem, as long as you keep your hand off of the fabric when the rain starts coming down. The other problem with vinyl and acrylic is that the fabrics are mildew resistant, but are not necessarily mildew proof. If you pack up an awning before it is fully dry, there is a good chance you will end up with some mildew. This is smelly and can discolor the awning fabric, so it should be avoided. You can clean off mildew using a soft cloth and gentle cleanser, but be careful not to scrub the fabric or to use oil cleaner and you should solve any mildew problems.