Cellulose Insulation Services
IN BROOKLYN, QUEENS, LONG ISLAND & Bronx, NY.

What Is Cellulose Insulation?

Cellulose insulation is made from recycled paper materials that are treated for fire resistance and durability. It is designed to fill gaps, reduce airflow, and create a consistent thermal barrier throughout your home.

Unlike traditional materials, cellulose insulation adapts well to irregular spaces. This makes it a strong option for both attics and wall cavities.

Homeowners often choose cellulose insulation because it offers:

• Strong thermal performance
• Improved air sealing compared to basic materials
• Eco-friendly composition
• Reliable coverage in hard-to-reach areas

Cellulose insulation is one of the most effective ways to improve energy efficiency, reduce drafts, and make your home more comfortable year-round. It is especially popular in older homes where existing insulation is no longer performing the way it should.

At Zavza Seal, we install high-performance cellulose insulation using proven methods that ensure full coverage, proper density, and long-term results.

Cellulose Attic Insulation Benefits

Your attic is one of the biggest sources of energy loss. Upgrading to cellulose attic insulation can make a noticeable difference in both comfort and energy costs.

Key benefits include:

• Better temperature control throughout the home
• Reduced heat loss in winter and heat gain in summer
• Lower monthly energy bills
• Improved indoor comfort

Blown in cellulose insulation is particularly effective in attics because it fills around joists, wiring, and other obstructions that traditional insulation may miss.

Cellulose vs Fiberglass Insulation

Many homeowners compare cellulose vs fiberglass insulation when deciding on the best option.

Here is a simple breakdown:

Cellulose insulation

• Higher density helps reduce airflow
• Better coverage in irregular spaces
• Made from recycled materials
• Often performs better in older homes

Fiberglass insulation

• Lower upfront cost
• Common in newer construction
• Easier to install in open wall cavities

When comparing blown in fiberglass vs cellulose insulation, cellulose typically provides better air resistance and more consistent coverage, especially in attics.

For homeowners dealing with drafts or uneven temperatures, fiberglass vs cellulose blown insulation often comes down to performance versus cost.

How We Install Cellulose Insulation

Proper installation is what makes cellulose insulation perform at its best. We use professional-grade equipment to ensure the right density and coverage.

Our 4-step process includes:

1. Preparation: We install plastic sheeting over cabinets, drawers, furniture, flooring, beds, windows, and other exposed surfaces to protect the home during installation. Temporary vapor-barrier containment walls may also be constructed approximately 2–3 feet from the exterior walls being insulated to help contain dust and debris. High-traffic walkways are protected with brown paper to minimize dust and maintain a clean work area.
2. Drill Access Holes: We drill multiple access holes, approximately 3 inches in diameter, between the wall studs to provide access to each wall cavity.
3. Install Cellulose Insulation: Using specialized dense-pack equipment, we insert a hose through the access holes and blow cellulose insulation into each wall cavity until it reaches the required density and is completely filled, minimizing air gaps and improving thermal performance.
4. Patch & Seal: Once the insulation has been installed, we patch and seal all access holes, leaving the surfaces ready for sanding, priming, and painting by others.

For homeowners looking to estimate material needs, a cellulose insulation calculator can provide a rough idea. However, a professional assessment ensures accuracy and better results.

Frequently Asked Questions

1. What is cellulose insulation made of?
Cellulose insulation is primarily made from recycled paper products, usually treated with fire-retardant chemicals to improve safety and durability.

2. Is cellulose insulation better than fiberglass insulation?
Cellulose insulation often provides better air sealing and higher density, which can improve energy efficiency. Fiberglass can be more affordable and easier to install, so the best option depends on your home and goals.

3. How long does cellulose insulation last?
Cellulose insulation can last 20 to 30 years or more when properly installed and kept dry.

4. What are the benefits of cellulose insulation?

Excellent thermal performance

Better air sealing than many alternatives

Eco-friendly and made from recycled materials

Helps reduce noise between rooms

5. Is blown-in cellulose insulation safe?
Yes, blown-in cellulose insulation is considered safe. It is treated to resist fire, pests, and mold when installed correctly.

6. How much does cellulose insulation cost?
The cost varies based on the size of the area, accessibility, and installation method. Blown-in cellulose is generally affordable compared to other insulation types.

7. Can cellulose insulation be installed over existing insulation?
Yes, cellulose insulation can often be added on top of existing insulation to improve overall energy efficiency.

8. Does cellulose insulation settle over time?
Some settling can occur, but professional installation techniques are designed to minimize this and maintain performance.

9. Where can cellulose insulation be installed?
Cellulose insulation is commonly used in:

• Attics
• Walls
• Crawl spaces

10. Is cellulose insulation good for soundproofing?
Yes, its dense composition helps reduce noise transfer, making it a great option for improving indoor sound control.