Describe the sound you want to reduce
Motor vibration, rolling hardware and a scraping section occur during movement. Traffic or other outdoor sound may remain when the door is stationary. Record the situation that matters most before asking for a quieter opener or a different door construction.
Compare relevant evidence
DASMA discusses sound-transmission ratings as a separate property of building elements. A thermal R-value is not itself a sound rating, and a quiet-drive description does not establish the acoustic performance of a closed door. Request product information that addresses the actual concern.
Include the surrounding garage
Gaps, adjoining construction and other openings may affect the result. A door-only change should not be sold as guaranteed silence for the whole room. Ask the proposal to distinguish mechanical repairs, optional equipment changes and any broader building assessment needed.
Your questions
Will insulation stop every outside noise?
No. Sound performance depends on more than the presence of insulation.
Can a belt opener cure a scraping door?
No. Mechanical contact must be assessed separately from drive noise.