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Case Study: Attic & Wall Insulation Upgrade in Farmingdale, NY – Blown-In Cellulose & R-15 Batt Installation
Attic and Wall Insulation in Farmingdale - A Wall Insulated by Zavza Seal with Blown-in Cellulose Insulation in Farmingdale

Client: Selina NG

Date of Estimate: April 1, 2025

Town/Neighborhood: Farmingdale

Borough/County: Nassau County

Construction Type: Residential

Category: Insulation Installation

Table of Contents

Problem:


The client’s second floor lacked proper insulation, resulting in reduced energy efficiency and poor indoor climate control. A site inspection by our senior estimator on March 24, 2025, revealed that the insulation in the ceiling was only R-15, with multiple areas of missing insulation. While the first floor was adequately insulated, the second floor walls and ceilings needed a complete overhaul to meet modern energy standards.

Solution:

Work Area A: Second Floor Ceiling (Approx. 42 ft x 15 ft x 9 ft high)
To address the inadequate ceiling insulation, we proposed and executed a full insulation upgrade. Our team used blown-in cellulose insulation, delivering a thermal value of R-38 to all ceiling cavities. The insulation was installed through existing access hatches and knee wall openings. Where needed, we cut additional access ports to ensure proper hose insertion for complete coverage. This approach significantly improves thermal retention, reduces heating/cooling costs, and enhances year-round comfort.

Work Area B: Knee Wall Areas (Approx. 25% of total wall area)
For areas behind the knee walls lacking any insulation, we installed R-15 batt insulation between the wall studs. This targeted approach ensures that previously exposed cavities now contribute to the home’s thermal envelope. The combination of batt and blown-in insulation provides comprehensive coverage tailored to the unique layout of the second floor.

Rebate Consideration:
To make the project more affordable, Zavza Seal LLC credited the ConEdison rebate amount directly on the invoice—eliminating the need for the client to wait several months for reimbursement. We processed this as a courtesy with the expectation of the client’s cooperation in securing the rebate documentation as it becomes available.

Attic and Wall Insulation in Farmingdale - Before and After Picture of a Wall Insulation by Zavza Seal LLC with Blown-in Cellulose Insulation

Results:
By combining blown-in cellulose and batt insulation, this project now meets modern energy standards for attic and wall insulation. The client’s second floor is expected to experience increased comfort, reduced energy bills, and improved indoor air quality. The use of Class 1 fire-rated materials and strategic access port installations ensured minimal disruption and long-term protection.

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