Your crawlspace is one of those areas in your home that you don’t often think about, but it is always working hard
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New Jersey’s trusted attic insulation contractor. Fast installs, complete old insulation removal, and rodent proofing results you feel the same day.
40%
Save up to 40% on heating and cooling costs
140°+
Attics can reach 140°+ without proper insulation
#1
Top-rated attic insulation contractor in NJ
1 Day
Most installs completed in a single day
The average under-insulated NJ home wastes $400–$800/year in energy costs.
Blown-in attic insulation stops the leak at the source.
free – No Obligations
Call (800) 285-4009 or fill out the form below
We’ll assess your attic and give you an honest recommendation with upfront pricing.
Blown-in insulation is loose-fill material, cellulose or fiberglass, machine-blown into your attic space. It conforms to every surface and fills every void, making it the go-to choice for most existing attics and retrofit projects.
best for most attics
Not sure which is right for your attic? Every attic is different. During your free inspection, we’ll assess your space and recommend the insulation type that makes the most sense for your home’s layout, condition, and budget. Master Attic installs both blown-in and batt insulation.
One upgrade. Multiple benefits you’ll notice every single month.
Most homeowners see a 20–40% reduction in heating and cooling costs after proper attic insulation. The upgrade often pays for itself within 2–3 years.
Feel the difference the same day we install. No waiting weeks for results, your home’s temperature balances out immediately.
Blown-in insulation reaches every corner, junction box, and irregular space, eliminating the hidden gaps that waste energy.
Most blown-in attic insulation jobs are completed in a single day, typically 3–5 hours with minimal disruption to your household.
We seal entry points and rodent-proof your attic as part of the job keeping critters out and your insulation intact for years to come.
Proper insulation keeps heat in during winter and out during summer. Your HVAC runs less, lasts longer, and your home stays comfortable 365 days a year.
From inspection to completion — here’s exactly what to expect.
1
We assess current insulation, check for air leaks, moisture, and rodent activity — then give you a clear recommendation with upfront pricing.
2
If your existing insulation is damaged, contaminated, or infested, we remove it completely using professional vacuum equipment.
3
We lay down protective plastic and seal off your living space so nothing contaminates your home. Then we seal air leaks and rodent-proof entry points.
4
Our crew machine-blows insulation to the precise R-value your attic needs. Even coverage, no gaps, no shortcuts.
5
We show you the completed work, verify R-value depth, and clean up completely. You’ll feel the difference that night.
Don’t take our word for it — hear from homeowners who fixed their attics.
Master Attic provides blown-in attic insulation, old insulation removal, and rodent proofing to homeowners across New Jersey, Eastern Pennsylvania, and Delaware. Our crew can typically schedule your install within the week.
From North Jersey to the Shore we’ve got your attic covered.
NJ
Bucks County, Montgomery County, Philadelphia suburbs and beyond.
PA
New Castle County, Wilmington, Newark, and surrounding areas.
DE
Same-Day
Service Available
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10+
Towns Served
Answers to the questions we hear most from NJ homeowners.
Most NJ homes cost between $1,500–$3,500 depending on attic size, current insulation levels, and material choice (cellulose vs. fiberglass). If old insulation removal is needed, that’s quoted separately. We provide free estimates with exact pricing before any work begins — no surprises.
Cellulose: Made of recycled paper treated for fire resistance. It has a higher R-value (insulating power) per inch and is better at blocking air leaks and sound.
Fiberglass: Made of spun glass. It’s naturally fire-resistant, doesn’t settle as much over time, and is generally more moisture-resistant than cellulose.
The old material is moldy or water-damaged.
There is a history of rodent infestation (to remove droppings/pheromones).
You want to perform “air sealing” (plugging holes where wire/pipes go into walls) before adding new layers.
Sealing entry points with steel wool or hardware cloth.
Sanitizing the area if there was a previous infestation.
Using borate-treated cellulose, which acts as a natural deterrent to many pests.
Under ideal conditions, it can last 20 to 30 years. However, its effectiveness can decrease if it settles significantly or gets compressed. Fiberglass tends to stay “fluffy” longer, while cellulose may settle by about 20% over a decade, slightly reducing its R-value.
Blown-in is almost always better for attics. * Batts (the big blankets) are hard to fit around joists and wires, leaving “thermal bridges” where heat escapes.
Blown-in creates a seamless monolithic layer that fills every nook and cranny, providing much better coverage.
For a standard NJ attic (approx. 1,000–1,500 sq. ft.), the actual blowing process usually takes 2 to 4 hours. If you include prep work and old insulation removal, it can become a full-day job (6–8 hours).
Answers to the questions we hear most from NJ homeowners.
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Get a free attic inspection and blown-in insulation estimate from Master Attic. No pressure. No obligation. Just honest answers about what your attic needs.
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