Selecting the right insulation company or contractor requires careful consideration. For example: 

• Choose the right professional: While some plumbers and HVAC pros may handle some insulation tasks, installation is often best left to pros who specialize in insulation. These pros have the training and tools to properly assess your home’s needs and effectively apply materials like fiberglass, spray foam or cellulose. 

• Look for licenses and certifications: Depending on where you live, a pro might need to obtain an insulation and acoustical license — or something similar. Research the requirements in your area and verify that your pro has the proper license and certificates.

• Get cost estimates and warranty information: Request detailed quotes and ask about warranties or guarantees. Make sure you’re getting a fair price and that the warranty covers the cost to fix poor workmanship and defective materials. 

• Read reviews to determine expertise: Online reviews can give you insight into the pro’s expertise and professionalism. Look for pros with mostly positive reviews that highlight their ability to complete the project on time. Also, pay attention to any mentions of customers needing to rely on their warranty to fix mistakes after the job was done. 

The national average cost to install or upgrade insulation is around $1,160 to $3,155*, according to Thumbtack data.

There are potential ways to save money when installing or upgrading insulation. For example, you can try:

• Getting quotes from several pros: This allows you to compare costs, shop around for the best price and avoid overpaying for insulation services.

• Insulating high-impact areas only: Insulating floors, walls and attics can also reduce heating and cooling costs in the long run.

• Saving money on materials: Cellulose and fiberglass typically cost less than spray foam, but spray foam offers better energy efficiency over time. Also, rolled insulation generally has a lower upfront cost than blown insulation, as it’s easier to install. Blown insulation, which can more effectively fill irregular spaces, often requires specialized equipment, increasing upfront costs. However, with its superior R-value, blown insulation may help save  heating and cooling costs in the long run. 

*Data on file at Thumbtack. For a personalized cost estimate, request a quote from a professional.

The insulation process typically starts with a professional assessment of your home to identify areas that need improvement, such as attics, walls or basements. A pro will likely recommend the best materials (like fiberglass, cellulose or spray foam) based on your needs. Installation is typically quick, often completed in a day or two, with minimal disruption. 

Once finished, you can expect improved energy efficiency, better temperature control and lower utility bills. Reputable pros will also provide tips for maintaining your insulation’s effectiveness.

The duration of an insulation job depends on several factors, including the size of the area, the type of insulation and the complexity of the installation. A DIY project using batt or roll insulation in a standard attic or wall might take a day or two, while professional installations — especially those using spray foam or blown insulation —  can often be completed in a single day for average-sized homes. 

Larger projects, hard-to-reach areas or additional prep work like air sealing or duct repairs can extend the timeline. Consult a professional for a precise estimate based on your specific needs.

Remember: The timeline for your project will vary depending on many factors. Always ask your pro to provide an estimate.

Deciding between DIY and professional insulation installation depends on many factors, including:

• Type of insulation: Batt or roll insulation is manageable for DIY, but spray foam or blown insulation often requires specialized equipment and expertise. 

• Safety risks: Safety is a concern for DIY installation, as handling materials like fiberglass or working in tight spaces can be hazardous without proper gear. 

• Compliance and permits: Professionals can help ensure compliance with local building codes and help pull permits, if needed. 

• Quality of work: A professional can help provide precise, gap-free coverage, maximizing your home’s energy efficiency. 

• Potential Savings: While DIY may seem cheaper initially, mistakes in installation could lead to higher energy costs. Professional installation is often a wiser long-term investment.