How To Guide
How To Measure Your RV
How To Install Your RV Cover
How To Care For Your RV Cover
Mildew Prevention and Treatment
Mildew Prevention and Treatment No matter how carefully maintained, every RV cover can be a target for a case of mildew. What causes mildew and what are the most sensible ways to prevent and treat it? Mildew is a form of fungus present everywhere in the world. It is a primitive plant form that feeds on other plants and produces microscopic, seed-like spores that float freely. It takes dark, damp conditions to encourage their growth. Synthetic cover fabrics do not support the growth of mildew. Natural cover fabrics (those containing cotton) can support the growth of mildew, but such fabrics are treated with mildew inhibitors that will, with proper care, typically outlast the warranty period of the cover. However, dirt, pollen and other environmental particles that embed between the fbers of any cover fabric are gourmet fare for mildew and therefore, no RV cover fabric can prevent mildew from growing. Most remedies rely on sodium hypochlorite (household bleach) to remove mildew. A good, strong, all-around solution is ½ cup household bleach per gallon of water. Do not use liquid detergents in combination with bleaches. Scrub the affected surfaces with a soft brush, using rubber gloves and eye protection. Rinse thoroughly. For cleaning our covers, we highly recommend 303 Marine & Recreation Multi-Surface Cleaner which is safe and effective. Be aware that repeated cleanings can diminish the water repellency of the canvas. To restore water repellency to factory-new levels, we highly recommend 303 Marine & Recreation Fabric Guard. Remember that anything used to kill or remove mildew will wash or wear away over time, so be prepared for repeated treatments as part of your maintenance routine.