How to Insulate Home Against Aircraft Noise

Sound travels from the exterior to the interior of a home in two ways: through solid structural elements and through the air. Although sound energy in the form of vibrations can be deflected by solid structural elements of a home – such as walls – some of those vibrations can make it through the walls and into a home. Openings in a home, such as space around windows and doors, mail slots and vents, allow air to travel directly from the exterior to the interior of a home. Wherever air can infiltrate a home, sound can as well. Building Renovation Services in Pune and Mumbai

Reducing Sound Transmission into a Home

Some primary approaches for reducing sound transmission into a home are:

1. Eliminating openings

2. Using higher ‐ rated Sound Transmission Class (STC) windows and doors

3. Adding mass to walls or ceilings

4. Adding absorptive materials between the studs or joists in a wall The STC rating is a measure of a material’s ability to insulate against sound; the higher the STC rating, the better insulating properties the material will have. The sound insulation program uses a standard of 40 STC. Generally, windows allow more noise inside a home than do walls. Because of this, the more space windows take up on a wall the more the overall noise protection decreases. Typically, using acoustical windows does more to improve the sound insulation performance than any other design modification does.

Windows and Doors

A home’s interior noise level can be reduced through differing degrees of treatment. For instance, some homes may only need their windows and doors in Pune and Mumbai re ‐ conditioned, while others may need all new windows or a combination of the two. To ensure the tightness necessary to achieve an STC 40 rating, homeowners may be able to re ‐ condition their home’s existing prime windows or doors by:

• Re ‐ glazing panes that are loose

• Replacing cracked or broken panes

• Installing weather stripping (both windows and doors)

• Adding insulation to weight cavitiesInstalling vinyl jamb liners

• Trimming sides of existing sashes to fit with new jamb liners In more severe cases, complete replacement of window sashes or the entire window or Sliding door in Pune and Mumbai may be necessary.

The research showed that adding an operable acoustic storm window to a tight ‐ fitting prime window results in an STC rating of 40. (A typical window with storm can provide an STC rating between 27 and 30.) New acoustic products are superior, but are also more expensive. Acoustical storm windows and doors are significantly different from regular storms. They may have thicker glass and a higher grade of aluminum, which act to prevent sound from entering a home, and are also very 6 effective at reducing air infiltration. (These products are not available through the standard building supply stores.) When acoustical storm windows and doors are installed, two inches of dead air space is created between the prime window or door and the storm. This dead air space acts to prevent noise from entering a home. Casement windows alone do not provide a high STC rating and acoustical storm windows cannot be installed outside the crank ‐ out windows. Some options for casement windows include:

• Replace windows with custom, acoustically ‐ rated casement windows with extra ‐ thick glass

• Replace windows with a new slider or double ‐ hung window with an acoustical storm

• Add an interior glazing panel to the existing casement window at the screen location (not recommended for bedroom windows for safety and code reasons)

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