How much does insulating a house cost?

Author: Lester Stracke  |  Last update: Monday, October 27, 2025

Insulation Cost Factors. Insulation costs around $1,852 to install on average, but the price can range from $498 to $4,500, or between $0.30 to $6.75 per square foot of insulation. Your exact price will depend on a few different factors.

How much does it cost to insulate a 2000 sq ft house?

The cost to insulate a 2000-square-foot house can range from $2,000 to $6,000, depending on the type of insulation used and other factors.

Is it worth insulating an old house?

Unless your home was specially constructed for energy efficiency, you can probably reduce your energy bills by adding more insulation. Many older homes have less insulation than homes built today, but even adding insulation to a newer home can pay for itself within a few years.

Does insulating your house add value?

Moreover, homes with proper insulation also tend to have higher resale values, providing a potential return on investment in the long run. This can be especially advantageous for buyers who may want to sell their home in the future.

What is the downside of insulation?

Irritation to skin and respiratory system

Wall insulation solutions like Rockwool are made of ultra-fine fibres. While thermally efficient, they can cause skin and respiratory irritation.

How to Choose the Best Insulation for Your Home | DIY Home Renovation

Is it expensive to re insulate a house?

Expect to pay roughly $1,500 to have 1,000 square feet of old insulation taken out of your home. The average total cost to remove and replace 1,000 square feet of existing insulation with new fiberglass batt insulation is between $2,300 and $4,800.

How long does insulation last?

Signs It's Time to Replace Insulation

For most homes, it can last for 20-80 years! That being said, like all things, insulation tends to wear down over time. If you are living in an older home and encountering some of the following problems, it may be time for a replacement.

Where should you not put insulation?

Never place insulation close to water heaters, oil burners or anything hot. The backing is especially flammable and will be a major fire hazard for your home.

Are brick houses better insulated?

Because of its ability to reflect and retain heat, brick is more energy efficient than other building materials. It will help keep your home cool in the summer and warm in the winter and also lower your energy bills, as we'll explore in an upcoming blog post.

Should I remove old insulation or just add more?

Removing old insulation is generally recommended if it's damaged, contaminated with mold, or infested with pests. However, if the insulation is in decent shape and just needs a boost, adding a new layer on top can be a cost-effective option.

What is the labor cost to install insulation?

Most installers charge between $40 and $80 per hour to install insulation, so the more complex the project, the more it will cost. A few complexities that may increase the cost of labor include: Your installer needs to install insulation in hard-to-reach areas.

Is it cheaper to insulate myself?

By doing it yourself, you can avoid labor costs associated with hiring a professional, potentially saving hundreds or even thousands of dollars. Sense of Accomplishment: Taking on a home improvement project like insulation can give you a sense of accomplishment and pride in improving your home's energy efficiency.

Is spray foam insulation worth the money?

Spray foam insulation does cost more than traditional options, but over time it pays you back in energy savings, and you can't really put a price on the comfort of your family.

What is the cheapest way to insulate under a house?

As the cheapest crawl space insulation material, polystyrene is a great option for those looking for an effective, water-resistant insulation material.

Does crawl space insulation make a difference?

Little to no insulation in your crawl space is letting all of that outdoor air into your home, making it uncomfortable and in some cases unhealthy. Insulating your crawl space with spray foam can stop those cold floors plus drafts around the floorboards, freezing pipes, as well as moisture and mold issues.

What time of year is insulation cheapest?

Best Time of Year to Buy Insulation

In this case, the spring is the best time, because you will also start to see savings in the summer months. The same is true for warmer climates, just different times of year because you'll want the job finished before the heat sets in.

Can you over insulate a house?

It is possible to over-insulate your house so much that it can't breathe. The whole point of home insulation is to tightly seal your home's interior. But if it becomes too tightly sealed with too many layers of insulation, moisture can get trapped inside those layers. That's when mold starts to grow.

Is replacing insulation worth it?

New insulation can make a huge difference in your utility bills. According to ENERGY STAR: “… homeowners can save an average of 15% on heating and cooling costs (or an average of 11% on total energy costs) by air sealing their homes and adding insulation in attics, floors over crawl spaces and basements.”

What is the most cost effective way to insulate?

Overall, fibreglass insulation is the cheapest and most effective insulation option available, making it a popular choice for homeowners and builders alike.

How long does it take to insulate a house?

It shouldn't be a surprise that the bigger your home, the longer it will take to complete an insulation installation. Small homes may be completed in a few hours or one working day, while a large home will take more labor and may take multiple days.

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