Blown-in Cellulose Insulation for Your Existing Home: A Comprehensive FAQ

Blown-in cellulose insulation is a popular method for insulating attics and wall cavities. Here’s an overview of the process for both applications:

Attic Insulation

• Preparation: Clear the attic space of debris and old insulation, seal air leaks, and ensure proper ventilation.
• Installation Process: A blowing machine is set up outside the home, and insulation is blown evenly across the attic floor.
• Finishing: Insulation depth is measured to ensure consistent coverage and the desired R-value is achieved.

Cavity Insulation

• Preparation: For existing walls, small holes are drilled into each stud cavity. In new construction, the cavities are left open.
• Installation Process: A smaller nozzle is used for cavity insulation, and the installer ensures even distribution.
• Finishing: For existing walls, access holes are plugged and patched, while in new construction, a vapor barrier may be installed.

Blown-in insulation offers excellent coverage and can effectively fill irregular spaces, making it ideal for both attic floors and wall cavities.

1. What is blown-in cellulose insulation made of?
Blown-in cellulose insulation is primarily made from recycled paper products, such as newspapers, with 80-85% recycled content. It’s a highly sustainable option that helps reduce waste in landfills.

2. What are the benefits of using blown-in cellulose insulation in attics?
Blown-in cellulose insulation provides excellent thermal performance, with a high R-value of 3.2 to 3.8 per inch. It’s highly effective in attics due to its ability to fill irregular spaces, reducing air infiltration, and providing even coverage for improved energy efficiency.

3. Can blown-in cellulose insulation be used in existing walls?
Yes, blown-in cellulose insulation can be used in existing walls by drilling small holes into the wall cavities and blowing in the insulation material. This process helps fill gaps around electrical outlets and plumbing, improving insulation without requiring major renovations.

4. How does blown-in cellulose insulation help reduce energy costs?
Blown-in cellulose insulation has a high R-value, which makes it more effective at resisting heat flow. This means your home stays warmer in winter and cooler in summer, reducing the need for heating and cooling, which can significantly lower energy bills.

5. Is blown-in cellulose insulation environmentally friendly?
Yes, blown-in cellulose insulation is one of the most eco-friendly insulation options, as it is made from recycled materials and helps divert waste from landfills. Additionally, its production has a lower environmental impact compared to other insulation types.

6. Does blown-in cellulose insulation offer good soundproofing?
Yes, blown-in cellulose insulation has excellent soundproofing properties. Its dense composition helps absorb sound, making it an effective barrier to reduce noise between rooms or from outside sources.

7. How long does blown-in cellulose insulation last?
Properly installed blown-in cellulose insulation can last between 20 to 30 years. Its longevity, combined with its performance, makes it a durable and cost-effective solution for homeowners.

8. What is the installation process for blown-in cellulose insulation in wall cavities?
In existing walls, small holes are drilled into each wall cavity. Insulation is then blown into the cavities using specialized equipment. For new construction, the insulation is applied before the walls are closed, ensuring full coverage.

9. Does blown-in cellulose insulation need a moisture barrier?
In most climates, blown-in cellulose insulation does not require a separate moisture barrier, as it naturally manages moisture better than some other insulation types. However, it is essential to evaluate the specific conditions of your home to ensure proper installation.

10. How does blown-in cellulose insulation enhance fire safety?
Blown-in cellulose insulation is treated with non-toxic fire retardants, such as boric acid, which give it a Class 1 Fire Rating. This adds an extra layer of fire resistance to your home.

11. How does blown-in cellulose insulation improve air sealing in a home?
Blown-in cellulose insulation is dense and fills gaps and cracks in walls and attics, reducing air infiltration by up to 30%. This improves energy efficiency by minimizing drafts and heat loss, leading to a more comfortable home and lower energy bills. However, attic spaces typically require additional air sealing measures, such as sealing leaks around vents, pipes, and ductwork, to maximize energy efficiency and prevent heat loss. Together, these steps create a more comfortable and energy-efficient home with lower utility bills.

Rogers Insulation: A Mass Save Partner

Mass Save offers generous rebates and incentives for blown-in insulation and air sealing in Massachusetts:

• Insulation Rebates: Homeowners can receive up to 75% off approved insulation improvements. Landlords and property managers may qualify for 100% off for certain properties.
• No-Cost Air Sealing: Eligible homes can receive air sealing services, such as sealing air leaks and ductwork, at no cost.
• Eligibility: Available to Massachusetts residents who are customers of participating utility companies. A free home energy assessment is required to qualify for rebates.

To make your home more energy-efficient with blown-in insulation, schedule a free home energy assessment today with Rogers Insulation, a trusted Mass Save partner. Enjoy the benefits of energy savings, improved comfort, and potential rebates!