Cellulose insulation is a common alternative to fiberglass in Boca Raton attics — it's made from recycled paper, treated for fire resistance, and blown in similarly. But cellulose has a critical weakness: it settles 20–30% over time, losing effective R-value as it compresses. For Palm Beach County homeowners, this means a cellulose attic that starts at R-49 can drop to R-35 or lower within a decade. This guide compares cellulose to blown-in fiberglass and explains why we install fiberglass in every Boca Raton home.
Tell us where to send it and a specialist replies within one business hour.
No obligation. We never share your details.
Both cellulose and blown-in fiberglass are installed with similar equipment and both fill attic floors completely. The key difference is longevity: cellulose settles 20–30% over its first 5–10 years as the fibers compact under their own weight, while blown-in fiberglass retains its rated R-value for 30+ years without settling. A Boca Raton attic insulated with cellulose at R-49 today may perform at R-35 in a decade.
Cellulose also absorbs moisture more readily than fiberglass, which is a concern in Florida's hurricane season and year-round humidity. Wet cellulose clumps, loses R-value, and can harbor mold — while fiberglass is naturally non-absorbent.
We install premium blown-in fiberglass in every Boca Raton attic because it delivers consistent R-value for decades without settling, doesn't absorb moisture, and won't feed mold. The R-value you pay for on installation day is the R-value your Palm Beach County home has in year 30 — and that's the kind of long-term performance we guarantee.
Cellulose is cheaper per bag, but the long-term cost of settling — higher bills, reduced comfort, and eventual re-insulation — makes it more expensive over the life of your Boca Raton home. We'd rather install the material that performs for decades the first time.
Cellulose can be a reasonable choice for Boca Raton homeowners on a very tight budget who plan to sell within 5 years — before significant settling occurs. But for anyone planning to stay in their Palm Beach County home longer than that, fiberglass is the better investment.
If your Boca Raton attic currently has cellulose that has settled, we can remove it and replace it with blown-in fiberglass — or top it up with fiberglass to restore R-value. Use our instant quote tool to get started.
Fiberglass is better for most Boca Raton homes. Cellulose settles 20–30% over time, losing R-value, while fiberglass retains its rated R-value for 30+ years. Fiberglass also doesn't absorb moisture, which matters in Florida's climate.
Yes. Cellulose settles 20–30% over its first 5–10 years, meaning an R-49 install can drop to R-35 or lower. Blown-in fiberglass doesn't settle, so the R-value you install is the R-value you keep for decades in your Boca Raton home.
Yes. We safely remove settled cellulose with a high-powered vacuum system and replace it with premium blown-in fiberglass to R-49+. The process takes one to two days for a typical Palm Beach County home.
No long forms, no waiting on a callback. Answer two quick questions and your projected install range lands instantly.
Prefer to chat? Ask our Budget Assistant →Step 1 of 3
Total conditioned living space.
Real pricing by home size, attic condition, and R-value.
Why the attic is the highest-ROI surface in your home.
The right R-value for your climate and home.
The local crew that knows your county's homes.
Safe extraction of old, damaged, or contaminated insulation.
Utility rebates and tax credits that offset your project.
The highest-ROI attic upgrade for your home.
Why premium fiberglass is the smartest attic material.
Professional blow-in installation done in a single day.
Balanced airflow that protects insulation and roof.
Stop the drafts that undermine your insulation.
The local insulation company that knows your area.
Find out exactly what's in your attic — and what's missing.
Remove the old, install the new — done right.
How much you'll actually save on utility bills.
Stop ice dams at the source — in the attic.
Insulation as an investment, not just an expense.
How long insulation lasts — and when to replace it.
Whole-home insulation that cuts bills and lifts comfort.
How spray foam compares to blown-in fiberglass for your attic.
Quiet storm noise, traffic, and neighbor transfer.
When exterior walls need attention — and when they don't.
Floor comfort and moisture protection for raised homes.
Reflect attic heat before it reaches your ceiling.
The local insulation crew that's close to your home.
Compare every insulation type for your attic.
Retrofitting insulation in pre-2000 homes.
Insulation that stands up to storm season.
Complete attic insulation services for your home.
What attic insulation actually costs in your city.
Boost your attic from under-insulated to peak performance.
Get an instant insulation estimate — no callback required.
The best insulation choice for your climate and home.
Insulate bonus rooms and garages for comfort and savings.
Seal and insulate AC ducts to stop cooling loss.
Control attic and crawl space moisture in humid climates.
Insulate right the first time — before you move in.
Cut energy waste and qualify for efficiency incentives.
Blown-in loose-fill fiberglass that fills every gap.
Fix the hot second floor that won't cool down.
Stop the energy waste that's draining your wallet.
Claim the federal tax credit for your insulation project.
The professional installer who gets it right the first time.
Keep your insulation performing for decades.
Get an instant insulation quote — no callback required.
Free, itemized insulation estimates with no obligation.
What makes the best insulation company in your area.
Premium insulation at a fair, transparent price.
Reflect attic heat before it reaches your living space.
Quiet your home with dense-blown attic insulation.
Find out exactly where your home is losing energy.
Boost your attic from under-insulated to peak performance.