Graceland uses only the finest building materials. Our buildings are manufactured with skilled Mennonite Craftsmanship. Graceland buildings have the strongest warranties in the business. All shingle and metal roof products have a 25 Year Manufacturers Warranty. All treated wood products have a Limited Lifetime Manufacturers Warranty, and Graceland offers a 7 year warranty on workmanship.. The best Portable sheds,garages and cabins built and delivered to your property.