In business since 2002. A lifelong resident of Nebraska City. Committed to family. Committed to doing the job right. Knapp Roofing has been voted Otoe County's best of the best four years in a row. Knapp Roofing is GAF certified, which is only offered to about 5% of roofing companies in North America. Our company has over 25 years of experience in the roofing industry and uses high-quality materials and state-of-the-art equipment to ensure that their work meets the highest standards of quality and durability. Knapp Roofing offers free estimates to help customers assess the scope of their roofing project and make informed decisions about the services they need.