Garage Insulation
Insulation added to garage walls, ceilings, and the garage door to moderate temperature in attached or finished garages.
Quick answer
Garage Insulation: Insulation added to garage walls, ceilings, and the garage door to moderate temperature in attached or finished garages. Typical cost: $1.50–$4 per sq ft for batts; $2.50–$6 for spray foam..
Why it matters
An uninsulated attached garage steals heat from adjacent living spaces; insulating the shared wall and ceiling is the highest-priority upgrade.
Typical cost
$1.50–$4 per sq ft for batts; $2.50–$6 for spray foam.
Pros
- • Reduces adjacent-room HVAC load
- • Quieter living spaces above
Cons
- • Code requires fire-rated drywall over foam in attached garages
Common uses
- • Attached garages
- • Workshops needing heat/cool
Alternatives
Insulated garage door only (partial fix)
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Frequently asked questions
- Where to insulate first?
- The shared wall to the house and the ceiling — those touch conditioned space.
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