Cost to Insulate a House: 7 Key Factors to Consider

February 9th, 2024 BY First American Roofing

Is your home feeling a bit too drafty in the winter or too warm in the summer? It might be time to think about insulation. Proper insulation can significantly improve your home’s comfort and energy efficiency. But before you jump into insulating your house, it’s essential to understand the factors that can impact the cost of this home improvement project. In this homeowner’s guide, we’ll explore seven key factors that influence the cost to insulate a house, helping you make an informed decision that suits your budget and needs. Let’s get started on the path to a cozier and more energy-efficient home!

Inside this blog:

Keep reading to learn everything you need to know about how much it’ll cost to insulate your home and stay comfortable all year round!

1. Type of Insulation Material 📦


The type of insulation material you choose has a significant impact on the overall cost of your project. There are various insulation options available, each with its own price range. Here are some common insulation materials and their approximate costs per square foot:

The choice of material depends on factors such as your budget, desired insulation performance, and specific application needs.

2. Area to Be Insulated 🏠

The size and area of the spaces you intend to insulate directly impact the overall cost. The more square footage you need to insulate, the higher the cost will be. Consider the following areas when calculating your insulation needs:

3. Insulation Thickness and R-Value 📊

The thickness of insulation and its associated R-value (a measure of thermal resistance) can impact the cost. Higher R-value insulation materials generally cost more per square foot. However, opting for higher R-values can lead to greater energy savings in the long run. The climate in your region and your desired level of insulation performance should guide your choice of R-value.

4. Installation Complexity 🛠️

The complexity of the installation can influence the cost of insulating your home. Factors that contribute to complexity include:

5. Local Labor Costs 👷‍♂️


Labor costs for insulation installation can vary significantly depending on your location and the availability of experienced contractors. Areas with a higher cost of living tend to have higher labor rates. It’s essential to obtain multiple quotes from local contractors to get a clear idea of labor costs for your project.

6. Building Codes and Permits 📜

In some cases, local building codes and regulations may require specific insulation standards and permits. Meeting these requirements can add to the overall cost of your insulation project. It’s crucial to research and understand your local building codes and any necessary permits before starting your project.

7. DIY vs. Professional Installation 🛠️

Deciding whether to tackle insulation as a DIY project or hire a professional can significantly impact your costs. While DIY insulation can save on labor expenses, it’s essential to have the necessary skills and knowledge to ensure a successful and effective installation. In some cases, professional installation may be the safer and more cost-effective option, as it ensures proper air sealing and insulation placement.

Factors That Influence the Cost of Insulation by Type

Let’s break down the factors that influence the cost of insulation for specific types of insulation materials:

Fiberglass Insulation

Cellulose Insulation

Spray Foam Insulation

Rigid Foam Board Insulation

Calculating the Total Cost: A Sample Scenario

To give you a better idea of how these factors can interact, here’s a sample scenario for insulating an attic space with fiberglass insulation:

Now, let’s calculate the total cost:

In this scenario, the total cost to insulate your attic with fiberglass insulation is $2,300.

Live Comfortably With an Insulated House

The cost to insulate a house can vary significantly based on several factors, including the type of insulation material, the area to be insulated, insulation thickness, installation complexity, local labor costs, building codes, and whether you choose DIY or professional installation. To ensure an accurate estimate for your specific project, it’s essential to obtain quotes from local insulation contractors and consider the factors mentioned in this guide. While insulation may have an upfront cost, the long-term energy savings and improved comfort it provides make it a worthwhile investment in your home’s future. So, don’t let drafts and high energy bills get the best of you—take the necessary steps to insulate your home and enjoy the benefits for years to come! 

Contact our expert team of contractors at First American Roofing today. We’re eager to help you figure out the best course of action for your next home improvement project!