Start with the purpose of the room
Tell us whether the garage is mainly for vehicles, storage or another permitted use. Insulation is one part of the choice; the opening, surrounding construction and ventilation also affect the space.
Compare equivalent information
Ask whether a quoted value describes an insulation material or the overall door assembly. Comparing unlike measurements can make two proposals appear more different, or more similar, than they actually are.
Keep the order specific
Record the model, construction, glazing and size in the proposal. Ask how edge fit and existing conditions will be addressed, while keeping wind performance and project approval requirements distinct from the insulation discussion.
Your questions
Does insulation guarantee a particular indoor temperature?
No. Temperature depends on the wider building and how the space is used, not solely on the garage door.
Can insulation value replace wind-rating documentation?
No. Thermal performance and wind resistance describe different requirements and should be reviewed separately.
