Duct Sealing: Mastic vs. Foil Tape vs. Aeroseal

Brush-applied sealant. Lasts the life of the duct system. Standard for new installs and most repairs.

OK for short-term and accessible joints. Adhesive degrades in 5–10 years.

Aerosolized sealant injected into the duct system that plugs leaks from inside. Best for hard-to-reach systems but $1,500–$3,000.

Housing stock around Somerville runs from turn-of-the-century Victorians off Main Street to 1990s colonials in Bridgewater, Raritan, and Hillsborough. That mix matters: older homes usually hide long, patched duct runs in tight joist bays, while newer builds rely on flexible duct that sags and traps debris at every bend. A air duct repair visit that ignores the age of the system ends up cleaning or replacing the easy parts and leaving the real problem in place.

New Jersey's humidity swing is the other local factor. Damp summers let dust bind to duct walls instead of blowing free, and winter heating cycles bake that layer in place. Scheduling air duct repair between seasons — spring before the AC runs hard, or fall before the furnace does — gets the most measurable result for airflow and indoor air quality.

AMG Duct Cleaning works throughout Somerville and the surrounding Somerset County towns, so every quote starts with an on-site look at your actual system rather than a phone estimate. You get before-and-after photos of the runs we touch, a written scope, and a straight answer about whether the work is worth doing at all.

• Upfront pricing with no add-ons discovered mid-job
• Photo documentation of every accessed run
• Licensed, insured technicians serving Somerville, Bridgewater, Raritan, Branchburg, and Hillsborough
• Honest recommendations — including telling you when you can wait

If anything in this article matches what you're seeing at home, see our Air Duct Repair service page for scope and pricing, or call (908) 332-0859 and we'll walk through it with you before anything gets scheduled.