The Problem:

A homeowner in Williston Park, NY was having trouble with poor insulation in the eave space of their home. This area included long sloped joists that ran from inside the eave up into the attic, along with side gables that were not properly sealed.

Because of this, the home was losing heat in the winter and getting too hot in the summer. The rooms felt uncomfortable, and energy bills were higher than they should be. Part of the problem was that some of the joists above the eave were blocked by old batt insulation, which made it impossible to properly insulate those areas.

There was also too much air moving through the space. Over time, this can lead to moisture problems, which may cause mold or damage to the structure.

The Solution:

Our team created a simple and effective plan to fully insulate and seal the eave space so the home could hold temperature better and stay protected.

Eave Space Preparation

We began by preparing the area so we could reach every part of the space. Some of the old batt insulation was carefully removed where it was blocking access to the upper sections of the joists. The insulation that was still working well on the walls was left in place.

This step made sure we could fully treat the entire length of the joists, including the sections that extend into the attic.

Vapor Barrier Installation

Next, we installed a vapor barrier across the entire area, including the sloped joists and the side gables. This layer helps control moisture and protects the structure over time.

Small openings were then made in the barrier at each joist and stud space. This allowed us to properly fill each cavity with insulation without leaving gaps.

Dense Pack Cellulose Insulation

Once everything was ready, we filled the space with dense packed cellulose insulation. This material was blown into all the joist and gable cavities, making sure each area was tightly packed.

This type of insulation helps stop air movement and keeps indoor temperatures more stable.

Final Result:

The eave space is now fully insulated and sealed. The home stays warmer in the winter and cooler in the summer, and there is much less air leaking in and out.

This improvement helps lower energy costs and makes the home more comfortable to live in. It also helps prevent future moisture problems, which protects the structure over time.

Why This Project Matters?

Eave spaces are often ignored, but they play a big role in how a home performs. When these areas are not properly insulated, it can lead to discomfort and higher utility bills.

This project shows how fixing one hidden area can make a big difference in the overall home.