Enhance Your Home's Comfort
Is Cellulose Insulation the Right Fit for Your Home?
If your home feels drafty or uneven, cellulose insulation is an effective way to increase comfort without opening up your walls.
Cellulose insulation is a blown-in material made from recycled fibers that fills existing wall cavities, helping reduce drafts and boost energy efficiency.
At Lantz Insulation, we've been retrofitting homes in Lancaster County using our two-hole technique for over 30 years.
What Cellulose Insulation Improves in Your Home
With cellulose insulation, you’ll notice lower energy bills, fewer drafts and cold spots, and a quieter home as outside noise is softened.
Cellulose insulation does more than improve comfort; it helps protect your home. From slowing the spread of fire to reducing moisture and improving air quality, it adds a layer of safety you don’t always see but can feel every day.
Fire
Makes your home safer by slowing the spread of fire, giving you more time to respond. At the same time, it supports comfort and efficiency, so you’re not choosing between safety and performance.
Mold
Controls moisture by limiting airflow into wall cavities, reducing the risk of mold and helping your home stay more durable, comfortable, and energy efficient.
Health
Supports better indoor air quality by avoiding airborne fibers found in some traditional materials for a healthier living environment.
Eco-Friendly and Efficient
When Cellulose Insulation Makes the Most Sense
Cellulose insulation is a smart fit when comfort issues are noticeable, but major renovations aren’t. It works especially well if:
- Your home is older with little or outdated insulation
- Certain rooms feel too hot or cold
- You want better efficiency without opening walls or disrupting your daily routine
How Cellulose Insulation Works in Existing Homes
We drill two small holes in the wall and blow in the insulation. It spreads out and fills the empty space inside, sealing gaps where air leaks in or out, so your home stays more comfortable without opening up your walls.
Using Cellulose to Insulate Existing Walls
Cellulose insulation can be added to existing walls without removing drywall in most cases. Using a drill-and-fill insulation approach, we dense-pack cellulose into the cavity, filling gaps around wiring and framing to cut drafts and improve comfort without major mess or downtime.
If you’re wondering how this compares to other approaches or whether spray foam can be used in the same situation, read our guide on adding insulation to existing walls.
From Start to Finish
A Smooth, Low-Disruption Installation You Can Feel Good About
The cellulose insulation contractors here at Lantz make the installation process straightforward, so you can move on with your day.
1. Quick Walkthrough & Prep
We start by reviewing your home and identifying the areas that need insulation. Then we prep the space to keep things clean and protected.
3. Dense-Pack Installation
We use a drill-and-fill approach to dense-pack cellulose into the cavity, filling gaps and helping control drafts and temperature swings.
2. Access Points Created
Small holes are drilled in targeted areas to reach the wall cavities, carefully placed to minimize impact.
4. Sealing & Clean-Up
All access points are sealed and patched, and we clean up the area so your home looks just like it did before, just with added comfort.
Cellulose vs Other Insulation Options
Cellulose is a strong choice for retrofit insulation, but it’s not the only option. Depending on your home, other approaches may offer different advantages. Some prioritize air sealing or moisture control, while others focus on cost or installation type, so it's important to choose the option that works best for your needs.
Explore
all insulation services to compare what fits your space.
Transform Your Home's Comfort
Why Homeowners in Lancaster, PA Choose Lantz Insulation
Since 1978, homeowners like you in Lancaster and surrounding areas have chosen Lantz for dependable service and home insulation solutions that deliver lasting comfort.
Local
Local presence in Lancaster and Southeast PA, backed by the experience, resources, and capabilities you’d expect from a larger company. Crews are locally trained, and we don’t use subcontractors.
Proven Brands
We stick with a small group of proven insulation brands we trust—materials we’ve installed countless times and know perform reliably in real homes:
- Applegate
- BASF
- Knauf
Attention to Detail
Every project is completed with precision and careful attention to detail, ensuring consistent results, fewer gaps, and a more comfortable, efficient home overall.
Responsiness
You get excellent communication at every step, with quick responses, clear updates, and a team that keeps you informed throughout the process.
Professional Service
We do what we say, show up on time, clean up thoroughly, and treat your home with the respect it deserves.
Customer Satisfaction
Real Reviews from Local Homeowners
See what it’s like to work with a team that respects your home, shows up prepared, and delivers on what they promise.
Common Questions About Cellulose Insulation
What is cellulose insulation, and how does it work?
Cellulose insulation is made from recycled paper fibers treated for fire and pest resistance. It works by filling gaps inside walls and attics to slow down air movement, helping maintain consistent indoor temperatures and improving overall energy efficiency.Can you install cellulose insulation in existing walls without removing drywall?
Yes, cellulose insulation can be installed in existing walls without removing drywall. Small access holes are drilled between studs, and the material is densely packed inside, then sealed—minimizing disruption while improving comfort and efficiency.Is cellulose insulation safe for homes and families?
Yes, cellulose insulation is considered safe. It’s treated with non-toxic fire retardants and does not release harmful fibers into the air. It can also help improve indoor air quality by reducing drafts that carry dust and allergens.How does cellulose insulation compare to fiberglass or spray foam?
Cellulose insulation offers better air sealing than fiberglass and is more environmentally friendly due to its recycled content. While spray foam provides a higher air seal, cellulose is often more cost-effective and still delivers strong performance for most homes.How much does cellulose insulation cost?
The cost of cellulose insulation depends on factors like the size of the space, accessibility, and whether it’s new or existing construction. On average, it’s one of the more affordable insulation options, especially when considering long-term energy savings.
You Don’t Have to Live With an Uncomfortable Home
Upgrade your home with cellulose insulation from Lantz and enjoy a consistent temperature year-round. Get a solution tailored to your space, so you can move forward with confidence that you’re choosing the right option. Start with a free estimate and see what’s possible.
