PELLA PRO CERTIFIED
MALARKEY PREMIUM CONTRACTOR
IKO CRAFTSMAN PREMIER
Indianapolis homes lose comfort and money through under-insulated attics every season. Indy Rooftops installs Owens Corning attic insulation that keeps heat where it belongs in winter, blocks the summer heat that bakes your roof from the inside, and lowers your energy bills month after month.
Whether your attic has never been touched or the insulation has simply settled and thinned out, our roofing technicians measure what’s there, correct the ventilation, and bring your attic up to code. If you’ve been searching for attic insulation Indianapolis homeowners can rely on, you’re in the right place.
💡 Key takeaway:
The right attic insulation lowers energy bills, prevents ice dams, and extends roof life. Indy Rooftops installs Owens Corning products paired with proper ventilation, so the whole system works as one.
The right attic insulation does far more than make an upstairs room feel comfortable. It lowers what you spend to heat and cool your home, protects the roof above it, and helps stop moisture problems before they start.
Energy efficiency is the biggest reason most homeowners insulate. The less your heating and cooling equipment must run, the lower your bills and the longer those units last.
“You can typically expect to see a 100% return on your investment from roof insulation services in three to five years.”
– Indy Rooftops Team
Ice dams are one of the most common cold-weather problems we see across central Indiana, and they almost always trace back to an attic that’s not insulated well enough.
“Ice dams form when the temperature between the attic and the outside is not similar enough in winter. Snow falls on the roof, heat from inside the house reaches that attic space and melts the snow faster than it should, the melt runs down to the gutter line where it’s not heated, and then it freezes up and creates a dam. Usually, those start with a lack of insulation.”
– Indy Rooftops Team
As an experienced attic insulation company in Indianapolis, our goal is to provide you with a longer-lasting roof. We aim to keep your attic within about 10 to 15 degrees of the outside temperature. When an attic runs too hot in summer, the roof effectively cooks from the inside out.
“If there’s not enough insulation and the attic gets too hot, you can get blistering of the shingles, where the granules start to release from the roof. That really deteriorates the lifespan of the roof.”
– Indy Rooftops Team
When hot and cold air clash in an under-insulated attic, condensation can form on HVAC lines, dryer vents, and pipes. Keeping that attic at a steadier temperature helps keep moisture, and the mold that accompanies it, in check.
Most buyers never think about attic depth until an inspector flags it. Bringing your attic up to the required standard removes that red flag and becomes a genuine selling point later.
“Not enough people know how much insulation they should actually have, which in Indiana is 16 and a half inches. A lot of homes here do not meet that criteria when they’re built – we bring insulation levels up to code.”
– Indy Rooftops Team
Indy Rooftops installs Owens Corning ProCat blown-in insulation on most residential jobs, with the commercial-grade L77 product available for larger buildings. We install these products for a reason: ProCat is dense, it does not settle over time, and it’s moisture resistant, which helps resist fungal and bacterial growth if water ever finds its way into the attic.
| Owens Corning ProCat | Owens Corning L77 | |
|---|---|---|
|
Best for |
Most residential jobs |
Larger commercial buildings |
|
Installation |
Blown-in |
Heavier truck-mounted machine |
|
Standout trait |
Densest product on the market; does not settle; moisture resistant |
Covers larger square footage efficiently |
“Cellulose is just shredded newspaper, and it settles. If you spray it to 16 and a half inches, you might come back in two years and it’s down to 13. ProCat does not settle.”
– Indy Rooftops Team
For commercial applications, we install Owens Corning L77 with a heavier, truck-mounted machine. ProCat remains the densest product on the market, while L77 covers larger square footage efficiently. Either way, our roof insulation services pair the right product with proper ventilation, because the material is only half the job.
On paper, the do-it-yourself bags at the hardware store look cheaper. The catch is coverage, density, and ventilation, and getting any of those wrong creates bigger problems than it solves.
| Professional Installation | DIY Hardware-Store Bags |
|---|---|
|
Correct coverage and full density |
Less coverage; not as dense or heavy as ProCat |
|
Intake ventilation baffled correctly |
Blocked intake is the biggest homeowner mistake |
|
Proper density packed around the eaves |
Easy to under-pack where ice dams form
|
“You might think you could buy 25 bags at the store for the same price. The problem is you’re not going to get the same coverage. The do-it-yourself bag is not as dense and not as heavy as the ProCat.”
– Indy Rooftops Team
Proper installation also means baffling the intake ventilation and packing the right density around the eaves where ice dams form. Our roofing technicians install baffles as part of every job so the roof keeps breathing the way it should.
“The intake getting blocked off is the biggest mistake a homeowner can make doing it themselves. If you don’t get that part right, you’re going to create so many other issues for yourself.”
– Indy Rooftops Team
From the first call to the final cleanup, here’s how an attic insulation project with Indy Rooftops typically works.
“It’s easier and more affordable to do insulation as part of a roof replacement. We can remove a sheet of OSB and do the whole thing from the exterior, so it’s less intrusive.”
– Indy Rooftops Team
Many homeowners tell us they wish they had bundled insulation with their roof replacement, since doing both at once saves money and disruption.
When our roofing technicians get into an attic, a few things tell us quickly whether the insulation needs to be added to or replaced. The first thing we check is always the measurement.
Cost depends on your attic, but these general ranges give you a place to start planning.
| Application | Approx. Cost Per Bag |
|---|---|
|
Standard residential installation |
$140 to $220, professionally installed |
|
Commercial L77 applications |
$70 to $140 |
Pricing varies with how accessible the attic is, how tight it is around the eaves where baffles are installed, how many separate attic spaces there are, and the total volume of insulation. Larger jobs often cost less per bag. We also offer financing with promotional APRs on qualifying projects.
As an attic insulation company in Indianapolis homeowners return to, we treat insulation and ventilation as one connected system rather than two separate jobs.
“Our goal is to make sure the problem is solved forever. We do a complete assessment of the intake, make sure it’s baffled properly, clean everything up, and do a walk-through. We even get a video from our installer to confirm the job met our expectations.”
– Indy Rooftops Team
Indy Rooftops is a Pella Certified Installer, a Malarkey Premium Contractor, and an IKO Craftsman Premier Contractor. A real representative answers the phone, inspections and estimates are free, and we back our work with more than 450 five-star reviews. When you’re comparing attic insulation services in Indianapolis homeowners trust, the difference shows in the details: a complete intake assessment, proper baffling, full cleanup, and a final walk-through.
Ready to lower your energy bills and protect your roof? Schedule a free estimate or contact our team to get started.
Yes. We run promotional APRs on qualifying projects so you can spread out the cost of bringing your attic up to code.
No. We do not install spray foam in attics because we do not want to block airflow. We strongly believe an attic needs to breathe, so we focus on blown-in insulation paired with proper ventilation.
No. We provide and install all the baffles and complete a full assessment of the intake, so adding insulation never shuts down the ventilation your roof depends on.
Indiana building code calls for 16 and a half inches. Many local homes fall short of that, which is why measuring the existing depth is the first thing we do.
Yes, and it’s the most efficient way to do it. Doing both at once is less intrusive and more affordable than scheduling a standalone insulation job later.
Whether your roof needs a simple repair, or a full roof, we will treat your home like ours. 100% Satisfaction Guaranteed!
Ask us about our Veteran discount
Whether your roof needs a simple repair, or a full roof, we will treat your home like ours. Ask us about our Veteran discount.
