Greatland Construction & Siding is one of the leading home improvement companies in Alaska. It specializes in exterior home and building renovation, restoration and remodeling services. The company offers a range of vinyl and fiber cement siding. It installs products from several manufacturers, such as CertainTeed Corporation and Trimlite. Greatland Construction & Siding provides single-hung, picture, awning, garden, casement, slider, bay and bow windows. It offers patio doors that feature fusion-welded mitered corners and meet the standards of the American Architectural Manufacturers Association (AAMA) and the National Fenestration Rating Council (NFRC). The company provides pre-engineered vinyl sheet membrane systems from Duradek for balcony, equipment room, gymnasium, garage and washroom applications. In addition, Greatland Construction & Siding operates a division, Greatland Steel Buildings, which designs buildings that comply with the standards of local and national building code agencies.