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Case Study: Exterior Wall Insulation and Energy-Efficient Window Replacement in Elmont, Nassau County
Insulation installation in progress in the exterior wall

Town/Neighborhood: Elmont
Borough/County: Nassau County
Construction Type: Residential
Category: Exterior Insulation and Window Replacement


Problem:

A homeowner in Elmont, NY was facing poor energy efficiency and insufficient thermal comfort in their residence. The lack of proper wall insulation and outdated windows contributed to heat loss during the winter and heat gain during the summer. The result was high energy bills and an uncomfortable indoor environment.


Solution:

Work Area A: Exterior Walls (Approx. 410 sq. ft)

To significantly improve the home’s energy efficiency and sound insulation, our team executed the following steps:

  • Carefully removed sections of the vinyl siding to access the underlying plywood substrate.
  • Cut access ports as needed to allow our specialized equipment to blow in dense-packed cellulose insulation into the wall cavities, achieving an R-value of 21.
  • Repaired and sealed all access ports upon completion of the insulation process to maintain the integrity of the building envelope.

Note: The cellulose insulation used in this project is environmentally friendly, meets Class 1 fire rating, and is water and moisture resistant. It also offers substantial sound absorbency and contributes to a healthier indoor environment. The product is Gold Certified and enhances both energy savings and indoor air quality.


Work Area B: Window Replacement

In addition to insulation upgrades, we replaced old and inefficient windows with energy-efficient units:

  • Replaced two windows with rough openings measuring 54 inches tall by 27 inches wide.
  • Replaced one window with an opening of 47 inches tall by 27 inches wide.

These new windows improve thermal performance, reduce drafts, and contribute to a quieter, more comfortable living space.

Before and after images of insulation in the wall

Conclusion:
This Elmont, NY project highlights Zavza Seal’s commitment to sustainable building solutions and improving residential comfort. By combining eco-friendly insulation with modern window replacements, we helped the homeowner significantly enhance their home’s energy performance, soundproofing, and overall livability.

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