Awning fabrics are impregnated with a water repellent finish and will remain resistant to rain during brief periods of light rainfall when used according to manufacturer's specifications and at an inclination angle of at least 14°. During extended periods of wetness and/or heavy rainfall, the awning must remain closed or retracted to prevent damage. Once the fabric cover has become wet, the awning must be extended again to dry immediately after the rain to avoid mildew stains.