Definitive Development 's principals have been constructing in Alaska for 43 years--The wide range of building experience allows us to totally evaluate your Complete Roof System --including: structural,insulation,ventilation,and actual roofing. Definitive has completed hundreds of re-roofs of residential and commercial properties. Definitive has solved many condensation/ ventilation/ icing problems. Definitive has always given the longest warranties and consequently has never been sued for anything. Definitive continues to serve all our clients with a serious effort for integrity and honesty.