Central PA Spray Foam
Fast, affordable, and proven. Blown-in fiberglass fills ceilings, attics, and cavities with a uniform, gap-free layer of insulation — cutting energy bills without the cost of spray foam. Central PA Spray Foam installs blown-in fiberglass for homes and businesses across central Pennsylvania.
Blown-in fiberglass is loose fiberglass fiber installed with specialized equipment that distributes it evenly into attics, ceilings, and cavities. It settles around trusses, wiring, and obstacles that batts can’t cover cleanly — delivering complete coverage with no voids.
For maximum air-sealing in critical zones, blown-in fiberglass pairs well with spray foam insulation — foam at the rim joists and seams, fiberglass across the open attic. We install trusted Owens Corning fiberglass, and every project starts with a free, no-obligation inspection and estimate.
Homeowners, builders, and business owners across central Pennsylvania choose blown-in fiberglass because it delivers where it counts:
Recommended R-values vary by building component:
These follow Department of Energy guidelines for our climate zone. Hitting them is what turns a modest upfront cost into real savings every heating season.
Blown-In Fiberglass Applications
We install blown-in fiberglass wherever fast, cost-effective, gap-free coverage matters most — throughout central Pennsylvania.
Let’s Talk
Blown-in fiberglass is a fast, affordable way to boost your home’s efficiency. Reach out for a free, no-obligation estimate on your attic or wall insulation.
(570) 412-5613 Get a Free EstimateWe install both, so we have no reason to push one. In most central Pennsylvania attics the real question isn’t which material is better. It’s where the insulation goes. If the attic stays vented and unheated, the insulation belongs on the attic floor, and blown-in fiberglass is the value pick. If you want a conditioned attic (for ductwork, a bonus room, or knee-wall space), the insulation moves to the underside of the roof deck, and that’s closed-cell spray foam work.
| Attic factor | Blown-In Fiberglass (Owens Corning) | Closed-Cell Spray Foam (Natural Polymers) |
|---|---|---|
| Where it goes | On the attic floor, over and between the ceiling joists | On the underside of the roof deck and gable walls |
| R-value | About R-2.2 to R-2.9 per inch, built up by depth to the R-38 to R-49 central PA attic target | R-7.1 per inch |
| Air sealing | None on its own; ceiling penetrations and top plates need separate sealing | Seals as it expands; the foam is the air barrier |
| Moisture | Needs a dry attic and working ventilation | Built-in vapor control |
| The attic afterward | Stays vented and unheated | Becomes part of the conditioned space |
| Upfront cost | Lower, typically 30 to 50% less per square foot | Higher, with more air sealing per inch |
| Install time | Most attic projects finish in a single day | Depends on roof area and thickness |
Choose blown-in fiberglass when:
Choose spray foam when:
A hybrid approach often wins: blown-in fiberglass across the attic for value, closed-cell spray foam at the rim joists and seams for air-sealing. We assess your space and recommend the balance that fits your goals and budget.
Older homes around Lewisburg, Harrisburg, and State College often have a thin, settled layer of old insulation and plenty of air leaks around chimneys, plumbing stacks, and light fixtures. Those are the same leaks behind the ice dams that form along the eaves every winter. For those attics, sealing the leaks and blowing fiberglass to R-49 is usually the best value. Closed-cell spray foam insulation at the roof deck makes more sense when ductwork or equipment sits in the attic, when the roofline is complicated, or when you plan to finish the space. Not sure which fits? The inspection is free, and we’ll tell you which one we’d choose.
Your Questions Answered
Blown-in fiberglass typically costs 30–50% less per square foot than spray foam, which makes it the budget-friendly choice for large open areas like attics. Spray foam still delivers better air sealing in critical zones. Every project starts with a free inspection and an upfront, itemized quote for your specific space.
Blown-in fiberglass settles slightly in the first months, then stabilizes and holds its R-value. We account for settling in our coverage depth so the finished insulation meets the target R-value long-term.
Yes. Blowing fresh fiberglass over settled or thin existing attic insulation is one of the fastest, most cost-effective ways to restore performance—as long as the existing insulation is dry and mold-free. We inspect first.
Fiberglass itself isn't harmed by brief moisture, but wet insulation loses R-value until it dries and can invite mold in the cavity. That's why we recommend it for dry, protected spaces and use closed-cell spray foam where moisture is a concern.
Most attic and ceiling projects finish in a single day with minimal disruption. Larger commercial areas or wall retrofits may take longer; we provide a clear timeline during your free inspection.
It depends on how you use the attic. For a standard vented attic with an open floor, blown-in fiberglass over a sealed ceiling is the cost-effective choice. If ductwork or equipment sits up there, or you want to use the space, closed-cell spray foam on the underside of the roof deck usually wins. We install both and inspect first.
Yes, and it's often the best value. We use closed-cell spray foam to seal the leakiest spots, like rim joists, top plates, and gaps around pipes and wiring, then blow fiberglass across the attic floor for depth. You get foam's air seal where it matters most and fiberglass's lower cost everywhere else.
Look across the attic floor. If you can see the tops of the ceiling joists, there isn't enough insulation. Other signs are upstairs rooms that run hot in summer and cold in winter, icicles or ice dams along the eaves, snow melting off your roof faster than your neighbors', and rising heating bills. A free inspection measures what you have.
Any time of year works, but spring and early fall are ideal. Attic temperatures are comfortable to work in, and finishing before heating season means you save from the first cold snap. Summer and winter jobs are fine too. Most attic projects finish in a single day, so timing is mainly about when your savings start.
Heat escaping from the house warms the roof deck and melts the snow on it. The meltwater runs down to the cold eaves, refreezes, and builds a ridge of ice that backs water up under the shingles. Air sealing the attic floor, adding insulation, and keeping attic ventilation clear keep the roof cold and stop the cycle.
We install blown-in fiberglass insulation throughout central Pennsylvania — and we’ll cross state lines for the right project. Because we’re family-owned and operated, you get the same honest work on every job.
Our home base. Full insulation service for Lewisburg, Mifflinburg, Milton, Danville, Sunbury, Selinsgrove, Bloomsburg, and the surrounding communities.
Homes, businesses, and new builds across Harrisburg, Camp Hill, Mechanicsburg, Hershey, Carlisle, and the greater capital area.
Insulation for the Centre County region — State College, Bellefonte, Boalsburg, Philipsburg, and the surrounding valleys.
Between those three points is our core service area, and we cover plenty of ground around them — including Williamsport, Lock Haven, and Lewistown. If your town isn’t listed, call us. We’ll cross state lines for the right project, too. Learn more on our service area page, or reach out to confirm coverage and schedule a free inspection.
(570) 412-5613 Contact UsBlown-in fiberglass is proven, affordable, and fast. Whether you’re upgrading an attic, insulating new construction, or covering a large commercial ceiling, our team helps you choose the right material and application for your budget.
We’re family-owned and operated, licensed in Pennsylvania (HIC #PA197062), and every project starts with a free, no-obligation inspection and estimate. Wherever your project is in central Pennsylvania, we’ll travel — even over state lines.
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