Most people tend to think of their homes as their happy place, like a warm embrace when entering your home after being outside in the cold. Even the walk from the car to the front door makes you long for the warmth of your home and the comfort that lies within.

Thanks to COVID, things have changed a bit, and in the face of a post-COVID world, things will continue to be different. Many of us who work from home due to COVID will continue to do so in some form. With the horrors of the pandemic came a new way of working and living.

I frequently get calls from customers who are setting up shop at home, and they aren’t physically comfortable in that space. Areas of the home that were once designated for cars, guest bedrooms, walk-in attic storage, or basement storage are now little carved out nooks for many remote workers to find a quiet place to get their work done. With so many of us re-locating within our abode and spending a large quantity of time there, we realize that these areas are suffering in the “warm and cozy” department. If you are feeling that way now, just wait until summer — if that area is not insulated or under-insulated, you will be roasting.

There is so much we can do for you at Attics and More, and we are only a phone call away. One complimentary, no-pressure visit from our friendly Attic Inspector, and you’re this close to finding comfort again. We can add blown-in insulation to finished walls, ceilings, and floors; we can install batted and unbatted insulation on open walls’ we can place blown-in insulation in the attic. Gaps in the attic? We air seal them.

Hot air and cold air are in a constant contest to see who can reach the other following the shortest path. We will send out a friendly Attic Inspector with his infrared camera at the ready and take pictures to show you where the air is escaping. ( We will email the images to you as well.) We wrap ductwork, create an insulating barrier for bedrooms that live above your garage and are colder than the other rooms on a second floor. We hunt down all the little places where air escapes and burdens your furnace in winter and air conditioning in summer by making them work overtime. I always explain it this way: “It’s simply science.” And science doesn’t lie.


Give our super-friendly Customer Experience Team a call today to get the ball rolling and make your new workspace worthy of its own “Welcome” mat.



Adding insulation to your attic is one of the most effective ways to save money on electricity bills and make your home energy efficient.

However, there are many things to consider when applying attic insulation, as it involves buying the right equipment, knowing how much material to buy, and hiring the right type of labor. Not only that, there are federal, state, and local regulations regarding home insulation that needs to be taken into account before embarking on this process.

North Carolina homeowners will need to optimize these various components to make sure they’re getting the best possible attic insulation for their homes. In this article, we discuss which components North Carolina residents need to keep an eye on to make sure their attic stays cooler in the summer and warmer in the winter.

North Carolina Attic Insulation Guide

What type of insulation is best for North Carolina attics?

Depending on which parts of your attic you’re trying to insulate, we recommend two different types of insulation material.

North Carolina Attic Insulation Types

Floor Insulation

For attic floors, there are two main types of insulation: roll and batt insulation and loose-fill or blown-in insulation. Batt and roll work best between joist and stud spaces, or for wide-open spaces or crawl spaces. Blown-in insulation works best for extremely tight spaces, or if an area already has insulation installed but needs a little more to top it off. They’re also useful for filling wood joists, as they allow air through the spaces and require insulation.

Get a free attic inspection and quote to insulate your attic.

In North Carolina, it’s more likely than not that your attic is going to need insulation in tight spaces. Blown-in insulation is perfect for that scenario, as it provides better coverage in smaller areas and is less expensive than roll and batt insulation. You can purchase fiberglass or cellulose insulation, whichever you prefer. Just remember that installing blown-in insulation is going to require a special machine that you’ll likely need to rent.

Roof Insulation

For insulation under your roof, we recommend using multi-layer reflective insulation. That might sound complicated, but we assure you it’s quite simple and is extremely beneficial for efficiently heating or cooling your home.

During the summer months, the sun’s radiant energy heats your roof shingles, which then transfers that heat into your attic through conduction. Your attic then becomes much hotter and stuffy, and the heat travels down into the rest of your home, making the entire house hot. During the winter, it has the opposite effect, as the heat generated by your heaters escapes through the attic walls.

Multi-layer reflective insulation addresses this issue by reflecting radiant heat rather than letting your attic absorb it. Thus, radiant heat can’t get through your attic roof and walls as easily, allowing your attic and the rest of your home to be better air-conditioned. During the winter, the heat generated from inside will also be reflected back into the attic and home, making your home that much warmer.

Depending on where you live, an average summer in North Carolina varies depending where you live. It can be as mellow as 80 degrees in the mountains or in the 90s in places like Fayetteville. Winters typically range anywhere between 20 to 45 degrees. Suffice to say, having multi-layer reflective insulation in your attic will allow your house to be more energy-efficient, and save a considerable amount on your electricity bill.

Knowing which materials to use is a key step in the process. The subsequent component deals with just how much attic insulation you’re going to need for your North Carolina home.

How much attic insulation do you need in North Carolina?

To determine how much insulation you’re going to need, measure the length times the width of the attic or whichever space you’re trying to insulate to get the square footage. For blown-in insulation, reference the back of the package to determine the proper height to get the correct R-value for your project.

The R-value is a measurement of thermal resistance, or how much the insulation can properly resist heat flow. The higher the R-value, the better the insulation will be in keeping warm air in or out of your attic. 

Depending on where you are in the United States, the R-value that you’ll need is going to differ due to varying climate conditions. In fact, there are 8 different climate zones designated by the U.S. Department of Energy that has different R-value recommendations for attics, basements, and other walls. Due to the differences in climate between different parts of North Carolina, the state is split into three different climate zones.

North Carolina Attic Insulation - R-Value Map

Climate Zone 5 is host to Alleghany, Ashe, Avery, Mitchell, Watauga, and Yancey. Climate Zone 4 has 64 other counties, while Climate Zone 6 only houses the other 62.

Some counties might experience harsher winters and therefore require higher R-value insulation. The R-value will also depend on whether or not there is already insulation installed in your attic prior to the procedure. Typically, attics without any prior insulation is going to require higher R-values for better insulation.

Thus, square footage and R-values are important determinants of how much insulation you’re going to need for your attic. If you’re unsure about exactly how much insulation you’re going to need, there are R-value calculators online, or you can call a contractor for an accurate quote.

How much does attic insulation cost in North Carolina?

Once you’ve figured out what insulation you need and how much needs to be installed, you’re on your way to contacting a contractor and starting the process. But before you do so, it’s important to understand the costs involved with attic insulation.

Get a free attic inspection and quote to insulate your attic.

Generally speaking, attic insulation can cost anywhere from $1,700 to $2,100, or between $1.50 to $3.50 per foot, depending on the material you choose and how much space you need to cover. As we noted earlier, blown-in insulation is the cheapest option. However, contractors often charge around $70 an hour, and in some cases you might need to hire an electrician to  make sure you aren’t disrupting any junction boxes or cables when insulating the attic. Electricians charge up to $85 an hour.

For North Carolina homes, the cost of insulating your attic doesn’t necessarily vary a whole lot, but it’s still important to research average costs depending on where you live. Every house is going to be different, and every city or county is going to have different code regulations. Make sure you check your local building codes for not only R-values but also vapor barrier requirements.

For example, homeowners in Raleigh, North Carolina paid on average $1,445 for attic insulation. Compare that to another city in North Carolina, say Charlotte, the average cost is about $1,296.

Manta’s database estimates attic insulation costs based on each city in North Carolina, making it a reliable tool for determining your budget. Even Manta, however, recognizes that their estimates do not include things like permit costs, inspection fees, and labor fees, as that often varies depending on location and contractor rates.

Before contacting a professional to start applying insulation, ask yourself these questions about attic-dependent work outside of insulation:

  • Is everything in your attic air sealed? Do you need to fix your ductwork to prevent moisture buildup?
  • Does your attic have good ventilation? Does everything that’s ventilating into the attic have a way out of it?
  • Is there any mold in your attic? Have you contracted someone to come remove said mold?

If you have all of these bases covered, your attic insulation budget will be far more accurate. Contractors will also have an easier time getting your attic checked and insulated if you’ve taken care of the listed components.

Incentives, tax credits, rebates, and savings programs

The North Carolina Energy Efficiency Alliance is currently partnered with different private energy vendors to offer various incentives for residential energy-efficiency practices, including attic insulation.

Duke Energy offers rebates of up to $600 for installing attic insulation, among other energy-efficient practices.

How to hire a North Carolina attic insulation contractor

Once you’ve figured out your attic insulation cost, what types of insulation you need, and how much of it that’s needed, it’s most likely time to find the contractor who can handle the process.

Get an attic inspection

An insulation contractor will be able to properly inspect your attic and decide the necessary steps to take for updating your home’s insulation. You can consult with contractors about what type of insulation to use, R-values, and many of the other components we discussed earlier. 

Get a free attic inspection and quote to insulate your attic.

But choosing the right contractor is going to make or break the process, and it can be difficult to choose between tens of dozens of professionals who claim that they’re the best in the business. We’ve identified a few things to keep in mind when hiring an attic insulation contractor.

Make sure they are thorough

First and foremost, pick someone who is thorough and transparent about your attic. If your contractor comes by your house for an inspection, and they perform various diagnostic tests and look through every corner of your attic, that’s an indication of their experience and reliability. Beware of contractors who take a quick peek in your attic and simply suggest putting in a few inches of insulation. A good contractor should initiate conversations about your attic’s insulation and ventilation issues, and provide detailed steps on how to move forward. 

Check online reviews

But don’t base your decision on just a single interaction with the contractor. Go online and look through their services and offers. If they provide things like lifetime warranties, that means a contractor is not only confident in their work, they’re willing to follow up on their services to make sure you’re getting your money’s worth. Check their online reviews as well to see what others are saying about a contractor. If reviews are generally positive, that’s a sign of a reliable contractor. 

Attic insulation is anything but simple, but North Carolina homeowners will greatly benefit from doing the proper research and spending their money on the right services and products. A properly insulated attic translates into a much more comfortable and energy-efficient home. 

Knowing the average home temperature for each season is important for a variety of reasons. Primarily, it’s helpful to establish seasonal benchmarks so you can identify potential opportunities to improve your home’s overall energy efficiency.

If you constantly find yourself adjusting the thermostat to get comfortable, it might be a sign that you have a problem. But what are the average home temperatures for winter and summer?

In this article, we’ll be exploring those averages and the various factors that can impact those numbers.

Average Home Temperature in the Winter

Average Home Temperature in Winter

The average home temperature during winter is often debated. Both Popular Science and recommend 68 degrees during the winter, but homes tend to hover over or under that mark.

This is because of factors like personal comfort, where you live, how your home is constructed, and how well you’ve insulated your home. Let’s take a look at some of these factors in detail to see how they affect your winter home temperatures.


Where you live is going to have a big effect on your home temperatures, as Floridians likely have warmer home temperatures than folks from Alaska.

With that being said, it’s important to recognize how climate and weather affect average state winter temperatures. If you live in a warmer climate, your home temperature will likely be higher, and vice versa.

The warmest U.S. winters are in Louisiana, Florida, and Hawaii. The average winter temperatures for these states range anywhere from 50 degrees Fahrenheit to up to 70 degrees. This is because of their proximity to either the coast or simply being in warmer southern climates.

Unsurprisingly, southern states like Texas and Georgia have average temperatures of about 45 to 50 degrees Fahrenheit. California also boasts a similar average winter temperature, at around 50 to 55 degrees.

Meanwhile, states like Minnesota and Alaska experience frigid winters, with average temperatures ranging anywhere from 10 to 0 degrees Fahrenheit. Many east coast and northwestern states hover in the 30 to 15-degree range as well.

All of this is to say that the average home temperature in some states will be much lower or higher when compared to others.

An average home in Alaska probably won’t crank its heaters to reach an internal temperature of 68 degrees because it will need to work significantly harder, thereby increasing the utility bill.

On the flip side, a home in Hawaii might keep its temperatures below that level given how warm it can get near the equator.

Home Design

Outside of geography, individual homes can vary in home temperature simply due to how they are constructed.

One of the most important factors in home design as it relates to indoor temperatures is where your home is situated relative to the sun. For example, homes that face southward might have higher average temperatures since they’ll be in the sunshine longer.

Your home’s orientation can also cause fluctuations in average temperatures between rooms. Rooms that are in the center of the home or without windows might have lower temperatures due to lack of sun exposure.

As such, those fluctuations can affect your home temperature since some rooms will be warmer during the day than other rooms.


The amount of insulation you have also impacts your average home temperature. Because heat naturally flows to cooler parts of your home, having insulation to block that warmth from escaping can greatly affect your interior temperature.

Research shows that homes with insulation can save up to 15% on their energy costs, indicating that stabilizing home temperatures is possible through more insulation.

Homes with sufficient insulation can retain heat better, meaning they’ll have higher average winter home temperatures than poorly insulated homes. How much insulation a home has, and the quality of the insulation, ultimately affect average temperatures in the wintertime.

Time of Day and Occupancy

Save for the fact that we’re in a pandemic at the moment, most homeowners won’t be staying in their homes 24 hours a day, seven days a week. They’re also not going to be awake every hour of the day either.

When looking at winter home temperatures, we need to take into account the hours where homeowners aren’t at home or awake. Some homes might have smart thermostats that maintain temperatures when no one is awake or at home, but others might let their homes cool off during off-hours.

This can result in homes that are hovering around the 68-degree mark, or homes that are persistently colder because of these factors.

Average Home Temperature in the Summer

Average Home Temperature in Summer

During the summer, many studies say the ideal indoor temperature averages at around 78 degrees. While this is certainly a good number to shoot for when keeping energy bills low, it doesn’t necessarily reflect actual average summer temperatures in the United States. It also might not meet your “comfort level”.

Just like in the winter, things like geography, home design, and insulation all affect average home temperatures and how homeowners use their AC units in the summer. Humidity is another key factor that’s exclusive to the summer months.

Let’s look at how these elements affect average home temperatures in the summertime.


As you’ve probably expected, average summer temperatures in the U.S. are practically the inverse of our previous discussion on average winter temperatures.

Northern states like Alaska, Washington, and Maine experience average temperatures of about 50 to 55 degrees Fahrenheit. Even a lot of east coast and midwest states like Vermont or Minnesota experience cooler summers averaging around 70 degrees Fahrenheit.

As expected, southern states such as Georgia and Alabama experience warmer summers whose averages top off at around 80 degrees. Texas and Florida have even hotter summers with average temperatures of about 80 to 85 degrees.

Not only will states like Alaska have an easier time controlling their home temperatures in the recommended 78-degree range, but there’s also a good chance that they won’t even keep them that high. Meanwhile, the hotter southern states will likely have higher average indoor temperatures due to their respective climates.

Things like local utility companies and reliable access to proper air conditioning can also depend on location. These factors can enhance or reduce a homeowner’s ability to cool their homes properly.

Home Design

We mentioned how the direction your home is facing and where it’s built relative to the sun can affect winter temperatures. This holds true in the summer, as homes that are more exposed to the sun will likely experience higher indoor temperatures than others.

Homes with trees, shrubs, and other plants can also experience lower home temperatures. Not only will tall trees shade your windows and expose your rooms to less sunlight, but plants can also shade the ground and pavement around the home.

This reduces heat radiation and cools the air before the summer heat even reaches your walls and windows. As such, designing your homes around plants or near them can affect home temperatures in the summer.


Just as insulation keeps heat from escaping in the winter, the same materials can keep unwanted heat out of lower floors.

The sun tends to radiate heat onto your rooftop, which heats up your attic and subsequently makes the lower floors hotter. Depending on the type of insulation you choose, you can prevent that heat from entering the lower floors or from entering your attic altogether.

As such, homes with more insulation, particularly in the attic, will likely experience lower temperatures in the summer since they won’t have to crank their AC units as much.


Other than sunlight, humidity is a big factor in terms of what makes us feel warm in the summer.

Humans sweat to regulate body temperature, but since there’s already so much moisture in humid air, it takes longer for us to sweat in these conditions. This means more discomfort, and in many cases, hotter homes.

Heat index allows us to estimate how hot a room will feel relative to how hot it actually is. For example, 65% humidity in a 96 degree Fahrenheit room will make it feel like it’s about 121 degrees. This is what can make your attic feel so hot in the summer and why attic ventilation is key.

Therefore, humidity can elevate how people perceive how hot their homes are, and could very well affect their average indoor temperature.

Know Your Home’s Temperature

Regardless of the season, it’s important to regulate your home temperature to save energy and reduce your bills. Use this article to find out what causes your home temperature to fluctuate and incorporate it into your energy efficiency strategies.

Every summer homeowners face the same dilemma of trying to keep their homes cool without breaking the bank on their energy bills, with the average energy bill totaling about $137 a month.

What many homeowners don’t know is that their attics can be a big culprit to wasting energy.

Heat often collects in the attic from the roof and radiates into the lower living spaces. This forces homeowners to crank up the AC, raising energy bills. So what can you do?

Luckily, there are several ways homeowners can cool their attics and make their homes more energy-efficient. Through air sealing, insulation, or ventilation, you can finally cool your attic the right way.

Air Sealing

One of the easiest and best ways to help cool down a hot attic is with proper air sealing. This is particularly effective when used in tandem with insulation and other strategies.

What is Air Sealing?

Air sealing is the process of finding and closing air leakage points in and around your home. In your attic, this is usually your walls, floors, entrances, and spots in between ventilation units. These pockets of air leakage can be big or small, accounting for over 40% of all energy lost in your home.

How Air Sealing Cools Your Attic

How Air Sealing Cools Your Attic

By properly air sealing your attic, you’ll prevent cool air generated by your AC units from escaping to your attic. It’ll also prevent heat and warm air in the attic from radiating down into the lower levels.

It also prevents the formation of ice dams on your roofs in the winter. This is relevant in the summer because ice dams can cause moisture buildup which damages your attic insulation. If your insulation is weak or insufficient, your attic will allow more heat to transfer into your home in the hot summer months.

How to Air Seal Your Attic

Before You Start

If you can, obtain or create a sketch of your attic. This will help you pinpoint areas of air leakage. Pay close attention to areas like dropped soffits over kitchen cabinets, slanted ceilings over stairways, areas where the walls and ceilings meet, and other dropped-ceiling areas.

See where your attic is leaking air. Schedule a free attic inspection.

Wiring holes, gaps near plumbing and pipes, and recessed lights are also common areas for attic air leakage. Write these spots down and make sure you have the right equipment to seal them.

Alternatively, we recommend getting a professional attic inspection complete by a licensed contractor. This will provide you with detailed insights, including thermal images of your attic. Use an attic inspector’s experience and professional equipment to pinpoint the exact spots where unwanted heat transfer is taking place.

Air Sealing the Attic

Start by filling in the big holes. You can do this by wrapping insulation in plastic bags and plugging areas like open stud cavities, making sure it fits tightly.

For dropped soffits, remove the insulation and add a piece of reflective foil or rigid foam board that’s a few inches longer than the opening. Seal it in place using caulk or other adhesives.

For pipes that have small air pockets, use caulk or foam to fill the space around them. Make sure you seal the attic hatch as well with new wood stops and adhesive foam weather strips.

Attic Insulation

Attic Insulation

Insulation is usually the most common method of cooling down your attic and preventing the heat from transferring downstairs. It both prevents heat from radiating downwards while simultaneously keeping cool air from escaping to the attic.

What is Attic Insulation?

Attic insulation creates barriers between the roof and your attic, as well as the attic floor to the rest of the home. It comes in a variety of materials, including fiberglass, cellulose, and even reflective surfaces similar to foil.

How Insulation Cools Your Attic

Insulation keeps the sun’s heat from radiating into the lower floors, meaning your home will be noticeably cooler. This means your AC won’t have to work quite as hard to maintain a cool internal temperature.

Insulation also prevents cool air from downstairs from escaping into the stuffy attic since it reduces the movement of air. Overall, the EPA estimates that you can save over 15% on your annual energy bills just by adding insulation to your attics and other areas.

How to Apply Attic Insulation

Before You Start

Always check your local building code recommended R-values, or your insulation’s ability to reduce conductive heat flow. It’s also recommended that you seal any air holes prior to installing insulation.

Take note of areas in your attic with plumbing, ductwork, and wiring. For your own safety, make sure there aren’t any cracks in your attic’s foundation.

If you’re applying rolled-up batts or reflective insulation, make all the necessary measurements so your insulation fits properly. Purchase safety goggles and masks, since materials like fiberglass can be dangerous to your lungs and eyes.

Insulating an Attic

If you’re using batt or roll insulation, target areas like your skylights and cut out the necessary amount of insulation. You can secure it between the framings with staples and house wrap.

Get an attic insulation estimate. Schedule a free attic inspection.

Make sure not to compress the insulation, or else it’ll become less effective. Whether it’s the stud walls or the joists, make sure you gently fit the insulation without leaving any gaps.

If you’re using blown-in insulation, plug in the machine and feed half a bag of insulation into it. Turn the machine on and fill any areas that need insulation. Be careful not to spray the loose fill in the rafter vents.

Reflective insulation requires you to measure out the surface area of the places you’re covering and stapling the material to the wood.

Attic Ventilation

Ventilation allows your home to breathe. In the attic, it pulls fresh air through it and lets the heat escape on a regular basis. Let’s explore how attic ventilation works to cool down your home.

What is Attic Ventilation?

A balanced ventilation system occurs when the amount of air coming into the attic equals the amount leaving it. The cooler air from the intake vents pushes the warm air up and out through the exhaust vents near the ridge.

Without proper intake ventilation, the exhaust vents don’t work and the heat doesn’t have a way to escape. This can cause permanent damage to your roof, which as we discussed, can damage your attic insulation and affect your home temperature.

How Attic Ventilation Cools Your Home

How Attic Ventilation Cools Your Home

In the summer, an improperly vented attic can generate a lot of heat through hot outside air having nowhere to go. This means your upstairs rooms will be uncomfortably hot until the sun goes down.

As such, poor ventilation causes hotter attics. This means hotter upstairs rooms and more stress on your AC units. By installing proper ventilation and letting the air circulate in and out of your attic, less heat will be trapped in the attic.

How to Ventilate Your Attic

Before You Start

First, look for signs of poor ventilation by either looking at your home yourself or calling a contractor. These signs include:

  • Curling shingles
  • Roof damage
  • Excessive attic heat
  • High summer energy bills
  • Rust on metal components in the attic

Keep in mind that every attic has different ventilation needs. Calculate the right amount of ventilation for your attic beforehand. There are a few different equations you can use to determine this number.

Ventilating an Attic

Generally speaking, installing attic ventilation isn’t a DIY project. You should call a trusted professional to install the different types of attic ventilation common in most homes.

Get a quote for a solar attic fan. Schedule a free attic inspection.

There are several different types of attic ventilation that you can use to improve the air circulation in your attic. These include turbine vents that can remove over 300 cubic feet of air a minute.

Active, power vents are smaller vents that can pull hot air out of the attic using electricity or solar power. Passive vents, such as box vents or ridge vents, can use natural winds and convection to move air through your attic.

Lower Your Energy Bills With Cooler Attics

Your attic is a literal hotspot for summer heat, but that doesn’t mean you have to break the bank trying to pay your energy bills. Leverage the three different strategies in this article to create a much more energy-efficient attic today.

Attic insulation is key to controlling your home temperature throughout the year. Heat naturally collects in your attic, making your house cooler or hotter depending on the season.

Blown-in insulation is one of the most effective ways to insulate your attic. In this article, we’ll be discussing what blown-in attic insulation is, its pros and cons, and the different types of insulation on the market to help you properly insulate your attic.

What is Blown-In Attic Insulation?

What Is Blown In Attic Insulation?

Blown-in attic insulation refers to cellulose, fiberglass, and other insulation that’s thick, dense, and lumpy. It has a consistency similar to that of down feathers and can fit in tight areas such as walls or in between wires or ducts.

Blown-in insulation that’s used in homes is made from a variety of materials, such as recycled newspaper, cardboard, glass, and common waste.

The “blown-in” aspect refers to using a special machine to “blow” insulation into parts of your attic. You’d typically buy a larger block of insulation, insert it into the machine, and fill in any spots that need to be insulated.

Benefits of Blown-In Attic Insulation

Benefits of Blown In Attic Insulation

Blown-in attic insulation keeps warm air from escaping your home during the winter. It also prevents heat from entering your home during the summer.

There are, however, more benefits to blown-in attic insulation that homeowners should be aware of:

  • Insulation retains warm air generated by your heater in the winter while keeping heat out of your home during the summer. This means your AC and heater units will work significantly less, saving you on your energy bills
  • Certain types of insulation like fiberglass are completely fireproof
  • With a proper blower, installation is simple and quick
  • Fiberglass and cellulose insulation can also soundproof your attic
  • Blown-in insulation can reduce condensation by controlling your attic temperature
  • Blown-in insulation gets into tighter nooks and crannies within your attic

Blown-In Attic Insulation: Pros and Cons

Blown In Attic Insulation - Pros and Cons

While there are clear benefits to using blown-in attic insulation for homeowners, there are key advantages and disadvantages that are important to consider.

Let’s explore some of the pros and cons of blown-in attic insulation here:


  • Blown-in attic insulation can be inserted in areas that are too narrow or small for rolled-up batt insulation. It can fill the space between heaters and AC units in your attic to keep them properly insulated and make the best use of your attic’s space.
  • Purchasing insulation used for blown-in purposes is relatively inexpensive but doesn’t compromise the R-value, or the insulation’s resistance to conductive heat flow.
  • Insulation is often treated with borates that prevent insects and vermin from populating your attic.
  • Blown-in attic insulation can also easily be layered on top of existing insulation or to bolster already insulated areas.


  • Unless you’re an experienced contractor, installing blown-in insulation can be messy and often requires you to call up a professional.
  • If you put too much insulation in one area, it can cause the ceiling to sag.
  • You’ll need to thoroughly air seal and install soffit venting if needed.
  • If you’re blowing cellulose over existing fiberglass, you may need to cut and refit poorly laid batts and insulate plumbing first.
  • Blown-in insulation can succumb to mold and rot if it comes in contact with a lot of moisture over an extended period of —which is why it’s important to ensure the area is sealed before blowing.

Types of Blown-In Attic Insulation

Types of Blown in Attic Insulation

Now that we know the advantages and disadvantages of blown-in attic insulation, let’s take a look at the two types of insulation that homeowners typically use to insulate their attic – cellulose and fiberglass:

Cellulose insulation

Cellulose insulation is made out of recycled paper and is an economically-friendly option for homeowners. It also contains the chemical borate which makes it both fire and insect-resistant.

Cellulose insulation has about a 3.5 to 3.8 R-value. It won’t settle too much if you apply it correctly, meaning if you blow in about 10 inches of cellulose insulation, it’ll stay at 10 inches for a longer duration.

While cellulose insulation is mostly irritant-free, we recommend wearing safety gloves and goggles when blowing it into your attic.

Fiberglass insulation

Another popular blown-in attic insulation material is fiberglass. It’s often the cheapest insulation option between the two. It has an R-value of about 2.2 to 2.9 per inch.

Some fiberglass insulation contains as much as 53% of recycled glass which has the added benefit of not settling too much after it’s been installed. It also prevents it from catching fire, making your attic fire-safe.

Best Blown-In Attic Insulation

So which material should you choose for blown-in attic insulation?

Our recommendation for blown-in attic insulation is fiberglass for its lower cost and effectiveness. While every home has different needs, we think this is the most versatile option.

We also recommend the Johns Manville Formaldehyde-free™ fiberglass insulation as the best fiberglass option. It provides thermal and acoustic insulation for your attic, perfect for both vertical and horizontal applications.

The Johns Manville fiberglass insulation is available in a range of R-values to fit any home specifications. It’s perfecting for covering tight spaces, small gaps, or voids. It’s fire-resistant, thermally efficient, and won’t settle after installation.

As the name suggests, Johns Manville’s fiberglass is free of any formaldehyde and can even sound-proof your attic when applied tightly. It won’t corrode into wires or metal studs and is just as fire-resistant as other insulation materials.

How Much Does Blown-In Attic Insulation Cost?

How Much Does Blown In Attic Insulation Cost?

At this point you might be asking: how much will all this cost?

This is a tough question to answer since your blown-in attic insulation budget depends on a few different factors. These include:

  • The state you live in, since R-values vary by location
  • The size of your attic and which areas need insulation
  • The general climate around your home
  • The material you ultimately choose to insulate with
  • Labor and professional equipment costs

Home Advisor estimates that installing blown-in attic insulation costs anywhere from $600 to $1,200 for attics about 1000 square feet in size.

The average home should need an R-value of about 30, which means 10 to 14 inches of total insulation.

Budgeting for Blown-in Attic Insulation

So what’s your budget going to look like for installing blown-in attic insulation?

You first need to look up the recommended R-value that your attic needs to meet. This determines not only which insulation you purchase, but also how much you’ll need to sufficiently cover your home.

Then, you need to look at the cost of labor for installing blown-in attic insulation.

If you do not have the professional experience and equipment for this project, we recommend hiring a professional to handle the work.

Get an Attic Inspection

It’s crucial that you get an attic inspection before buying all the materials and hiring a contractor.

You never know what types of potential issues or considerations are hiding in your attic. Chances are, you don’t really visit your attic all that often. This means there could be all kinds of issues ranging from poor air sealing, ventilation problems, poor air quality, and more.

Attic inspectors can identify these types of issues. They’re also there to show you much insulation you’re going to need based on a number of factors.


Stop unwanted heat transfer and build an energy efficient attic. Leverage this article to know everything you need before embarking on your blown-in attic insulation project.