Home maintenance & planning · Checklists and planning · Updated November 2026
Home Improvements That Help Reduce Outside Noise
Sound gets in wherever air gets in, and through the weakest parts of the walls: usually windows and doors. Sealing gaps first, then upgrading windows and doors, gives the most noticeable improvement.
Start with gaps
- Weatherstrip doors and operable windows, and add door sweeps (weatherstripping vs. caulk).
- Caulk gaps around window and door trim.
- Seal openings around pipes, vents and wires on exterior walls.
Windows and doors
- Laminated glass reduces noise better than standard glass of the same thickness.
- Double-pane units with different glass thicknesses block a wider range of sound than identical panes.
- Look for an STC (Sound Transmission Class) or OITC rating; higher numbers block more sound.
- Interior window inserts can help without replacing the window.
- Solid-core or insulated exterior doors block more noise than hollow doors.
Budgets: see the cost to replace 10 windows and our door cost guide.
Walls, attic and other upgrades
- Blown-in insulation in exterior walls and attics reduces some noise (insulation cost guide).
- An insulated garage door helps if the garage faces a street (insulated vs. non-insulated).
- Fences and dense plantings help a little with direct line-of-sight noise; solid fences work better than open ones.