Blown-In Insulation Cost in Denver [2025 Data]

 Insulation plays a big role in how well Denver homes handle the city’s long, cold spells and quick temperature shifts. Blown-in insulation averages around $1,501, with most projects falling between $933 and $2,082. The price you’ll pay largely depends on how much coverage you need, the material you choose, and the R-value required for consistent comfort.

Blown-In Insulation Cost Factors 

In Denver, CO, the cost of blown-in insulation depends on things like how much area you’re insulating and the level of coverage you’re aiming for. Knowing how these pieces fit together makes it easier to get a realistic sense of what this project will cost.

Size of the Area

The biggest cost factor is the size of the area that requires insulation. A larger area requires more insulation and labor, increasing the overall price. This metric is calculated by multiplying your square footage by the cost per square foot of your chosen insulation materials, which are detailed below. However, a general range for blown-in insulation per square foot is $1.15 to $3.10, depending on the type.

R-Value

When measuring the efficacy of any insulation material, it all boils down to the R-value. Generally speaking, higher is better, though there are two metrics to consider. There’s the overall R-value and the per-inch R-value. For example, if you want a total R-value of 30, you’ll need ten inches of insulation at an R-value of 3.0 per inch. Materials with higher R-values cost more, like sheep’s wool, but you don’t need as much material to complete the installation. 

Below is a breakdown of R-values and the corresponding prices:

Type of Insulation

The cost to install blown-in insulation depends on the type of insulation you choose for the project. Anticipate spending anywhere between $0.55 and $2.20 per square foot for materials, not including installation. Below is a breakdown of each blown-in material type and how much it costs.

Blown-In Insulation Pro Costs

The cost to hire a professional to install blown-in insulation in Denver can extend beyond labor costs alone. Factors such as permits and taxes can also impact your final costs. 

Labor

In Denver, insulation professionals charge $80 to $155 per hour, depending on the number of installers on the job and the complexity of the space. Jobs that require extra prep or additional coverage tend to take longer and fall at the upper end of the range.

Permits

Blown-in insulation alone usually doesn’t require a permit in Denver, but they may come into play if the project includes ventilation adjustments or electrical work. When needed, fees typically fall between $75 and $250, depending on the project’s scope.

Insurance and Licensing

Insulation contractors in Denver typically hold liability insurance and workers’ compensation, and most are licensed as Denver Residential Contractors, which covers non-structural residential work, including insulation and air sealing. These credentials increase contractor overhead, which affects the rates they charge, but they can also protect you and your home if there’s any unforeseen damage during the installation.

Taxes

Denver applies a combined sales tax of about 8% to insulation materials. Labor isn’t taxed, so it’s worth double-checking your estimate to make sure the tax is only applied to the insulation materials and not the installation itself.

Does New Blown-In Insulation Increase Home Value?

Blown-in insulation can make a significant difference in Denver homes by helping them stay warmer during prolonged, cold spells and reducing the frequency of heating system operation. It’s not the kind of project that typically shifts resale value, but the improved comfort and steadier energy use are qualities many buyers notice and appreciate.

How Angi Gets Its Cost Data

Home is the most important place on earth, which is why Angi has helped more than 150 million homeowners transform their houses into homes they adore. To help homeowners with their next project, Angi provides readers with the most accurate cost data and upholds strict editorial standards. We survey real Angi customers about their project costs to develop the pricing data you see, so you can make the best decisions for you and your home. We pair this data with research from reputable sources, including the U.S. Bureau of Labor Statistics, academic journals, market studies, and interviews with industry experts—all to ensure our prices reflect real-world projects. 

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