Do i have to have insulation in my roof?
Maybe, you do need insulation above the ceilings (it will be between the ceiling joists/framing that also serve as the attic floor joists/framing. 1. If you have a finished attic (for a living area of some sort) then yes there should be insulation with a vapor barrier under the roof &/or between the roof framing. This will help keep heating/cooling costs down and prevent condensation from forming under the roof and doing lots of water damage over time. 2. If the attic is partially finished but used for storage only & there is attic ventilation in use also then no you don’t need insulation under your roof. 3. If your attic is partially finished or completely finished but used for storage only and there is no attic ventilation then yes you should have insulation with a vapor barrier also under the roof. You don’t have to have it since it’s used for storage only but if you start to see condensation &/or wet areas on the wood or framing under the roof then you will need insulation with a v