Preventative Maintenance is key to owning any Recreational Vehicle. Especialy Roof Maintenance! Please visit www.forestriverinc.com/owners for complete details. Exterior seams and seals must be visualy inspected at least every 90 days. I personally inspect my Travel Trailer every 30 days. We also bring our inventory over at least evey 90 days (usually every 50/60 days) and wash the roof, check all roof seams and seals. Then put them back over on the sales lot. If the unit is still in stock 90 days later, the same process happens again. Please do not leave any wheel chocks, hitch pins etc with units when dropping off for services.