Attic Insulation in Philadelphia & New Jersey

If your upstairs is hot in July and cold in January, the attic is the first place to look. Heat moves up, and in an under-insulated attic it keeps going straight out through the roof, taking your heating bill with it. In summer the process runs in reverse, with an attic that reaches well over 120 degrees pushing heat down into the bedrooms below.

Synergy3 Home Solutions has been insulating attics across Philadelphia and New Jersey for several years. Our BPI-certified crews measure what is up there now, seal the ceiling plane first, and then bring the attic to the depth it should have been at from the start. Get in touch to schedule an assessment.

Signs Your Home Needs Attic Insulation

• The second floor is noticeably hotter in summer and colder in winter than the first
• Heating and cooling bills climb year over year without a change in how you live
• You can see the ceiling joists when you look across the attic floor
• Ice dams form along the roof edge after snow, with icicles at the gutters
• The heating or cooling system runs almost constantly to hold a setting
• Rooms over a garage or porch never hold temperature
• Drafts and cold interior walls on the top floor
• The insulation you do have looks matted, dark or damp

How Much Attic Insulation Your Home Should Have

Philadelphia and most of New Jersey sit in climate zone 4, with northern New Jersey in zone 5. For those zones, ENERGY STAR recommends attic insulation in the range of R-49 to R-60. A great many homes in our area have R-19 or less, which was the standard when they were built and has since settled and compressed on top of that.

What R-Value Actually Means

R-value is resistance to heat flow, and it accumulates with depth. Every material has an R-value per inch, so the depth you need depends on what you are installing.

R-Value Per Inch by Material

• Blown cellulose: roughly R-3.2 to R-3.8 per inch
• Blown fiberglass: roughly R-2.2 to R-2.7 per inch
• Fiberglass batts: roughly R-2.9 to R-3.8 per inch depending on the product
• Mineral wool batts: roughly R-3.0 to R-4.0 per inch

In practice, reaching R-49 with blown cellulose means somewhere around 14 inches of settled depth, and reaching R-60 means closer to 17. That is why an attic with 6 inches of old fiberglass is not close to code, even though it looks covered.

Types of Attic Insulation and Which Performs Best Where

The types you will find in our area are blown cellulose, blown fiberglass, fiberglass batts and mineral wool batts. Whichever material goes in, coverage is what determines real performance. Where DIY attic projects usually lose their savings is the corners, the perimeter and the spaces around wiring: the recommended R-value is reached in the middle of the attic and nowhere else.

How to Check What You Already Have

Before any contractor visits, you can get a reasonable idea yourself in ten minutes. Take a tape measure to the attic hatch and measure the depth of the existing material at several points, since settling is uneven, pushing the ruler down to the drywall. If the insulation is level with or below the tops of the joists, you are almost certainly under-insulated. Note what the material is: gray-brown shredded paper is cellulose, yellow or pink fluff is fiberglass, and older homes sometimes have vermiculite, which should not be disturbed at all until it has been tested.

To calculate roughly where you stand, multiply the depth by the R-value per inch of the material - around R-3.2 to R-3.8 an inch for cellulose and R-2.2 to R-2.7 for loose fiberglass. The US Department of Energy recommends attics in this climate zone reach the R-49 to R-60 range, so an attic with eight inches of settled fiberglass is at roughly a third of current guidance. Homeowners who find their material is damp, matted or capped with dust deposits at the edges usually have an air leak feeding it, which is the thing to fix first. We check this as part of the assessment, including whether the existing material is dry and worth keeping.

Choosing Materials and a Contractor

For an attic floor, recycled cellulose and fiberglass both perform well when blown to an even depth; the choice usually comes down to the existing material and how the attic is built. Spray foam at the roof deck is a different approach that turns the attic into conditioned space and is quoted very differently, so compare like with like when you get proposals.

When hiring, ask for the target R-value in writing, how depth will be verified after the work, whether air sealing is included before insulating, and how bath fans, recessed lights and the attic hatch will be handled. An inspection that skips those details is a price, not a plan.

What Attic Insulation Work Involves

Air Sealing the Ceiling Plane First

Before any material goes down, we seal the openings between the house and the attic: top plates, wire and pipe penetrations, plumbing chases, dropped soffits, recessed light housings and the attic hatch. Insulation slows heat transfer, but it does not stop air movement, and blowing insulation over an unsealed ceiling is the single most common way homeowners get a disappointing result from a real amount of money.

Protecting Ventilation and Fixtures

Soffit vents get baffles so the new depth does not block airflow at the eaves, bath fans are checked to confirm they vent outside rather than into the attic, and heat-producing fixtures are dammed off where the manufacturer requires clearance. Attic ventilation is what keeps the roof deck dry, and burying it causes moisture problems that look like an insulation failure later.

Adding Depth

Loose-fill material is blown in to a marked, measured depth across the entire attic floor, including the perimeter, which is where crews in a hurry come up short. Depth markers are left in place so the finished job can be verified rather than taken on trust.

Knee Walls and Attic Rooms

Finished attic space, bonus rooms and knee walls need a different approach than an open attic floor, because the thermal boundary follows the walls and sloped ceilings instead of the joists. These areas are frequently the reason one upstairs room is unusable in summer.

Handling the Old Insulation

Dry, uncontaminated material can usually stay in place with new insulation added on top. Material that is wet, rodent-contaminated or fire-damaged has to come out first, which we handle as insulation removal before the new work begins.

The $199 Whole Home Energy Audit

We price attic work from an assessment, not from a phone call. For $199 you get professional testing of your insulation, airflow and energy loss, a clear picture of where the house is leaking, and good, better and best options with upfront pricing on each. The fee is credited toward your project if you move forward.

Blown-In or Batts for an Attic?

For an existing attic floor, blown-in material is almost always the better choice: it fills around framing, wiring and irregular joist spacing, and it reaches into the perimeter where batts have to be cut and forced. Batt insulation makes more sense in accessible, evenly framed bays, knee walls and new work. We will tell you which applies to your attic and why. Read more about blown-in insulation.

What Attic Insulation Costs and How Homeowners Pay for It

The price of an attic project comes down to square footage, the R-value already in place, how accessible the attic is, whether ventilation work or removal is needed, and how much air sealing the ceiling plane requires. Those are the levers, and they are why an honest number comes after someone has been in the attic.

Financing with approved credit is available. New Jersey homeowners may also qualify for utility energy-efficiency programs, including those offered through Elizabethtown Gas, Atlantic City Electric, and PSE&G, that help offset the cost of insulation and air sealing. Synergy3 Home Solutions estimates that an attic brought up to R-60 combined with a new high-efficiency heating and cooling system can cut heating and cooling costs by up to 30 percent.

Related Services

• Air Sealing
• Blown-In Insulation
• Batt Insulation
• Crawl Space Insulation

Helpful Guides

• How Much Does Attic Insulation Cost?

Our Guarantees

Every project is backed by our 365-day satisfaction guarantee. Our insulation crews are BPI-certified, pricing is upfront and presented as good, better and best before the work is scheduled, and we protect and clean the areas we work through in an occupied home.

Because Synergy3 Home Solutions also services HVAC systems, the recommendation you get accounts for both. If your attic is the problem, we say so. If the equipment is undersized or the ducts are leaking into the attic, we can tell you that too, instead of selling insulation and letting you find out in January.

Why Philadelphia and New Jersey Homeowners Choose Synergy3 Home Solutions

Synergy3 Home Solutions is family-run since 2006 and still privately owned rather than private-equity backed. We hold a 4.9-star rating with 500+ Google reviews, and have served over 2,000 customers. Because we handle both the building envelope and the heating and cooling system, we can say honestly whether your comfort problem is the attic, the equipment or both.

Get in touch or request an assessment online, and we will measure what your attic has, show you what it should have, and price the difference in writing.