What is the Difference Between Insulation & Air Sealing?

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Both insulation and air sealing help keep the inside of your home comfortable by controlling heat loss or gain. By keeping your home’s insulation and sealing up-to-date, you can keep your home energy-efficient and save money on electricity bills. However, insulation and air sealing are different techniques requiring specialized materials and methods. While insulation is the process of adding a material to control heat transfer, air sealing is sealing up gaps and cracks in your home’s exterior to prevent hot or cold outdoor air from entering. In this blog, we will further detail the key differences between the two and how each plays a key role in keeping your home comfortable.

air sealing window to improve home insulation and overall energy efficiency

Insulation & Air Sealing Prevent Different Types of Heat Transfer

Insulation works by slowing down the transfer of heat between two spaces, such as your home and outside. By trapping air pockets in the material, insulation acts as a barrier to prevent hot or cold air from entering your home. On the other hand, air sealing prevents air leaks and drafts by sealing up gaps and cracks in your home’s exterior. This helps to prevent outdoor air from entering your home and indoor air from escaping, resulting in better temperature control and energy efficiency.

Air Sealing is for Windows, Doors, & Exterior Walls

sealing window to improve home efficiency and keep it well insulated in all four seasons year round in massachusetts

While insulation can be installed in various areas of your home, air sealing is specifically for windows, doors, and exterior walls. These are the areas where most air leaks occur and where air sealing is most effective. By sealing these openings properly, you can prevent drafts and improve your home’s energy efficiency.

Insulation Comes in Different Types & Materials

Insulation comes in various types and materials, including fiberglass, cellulose, spray foam, and more. Each type has its own unique properties and benefits, making it important to choose the right one for your home’s specific needs. Air sealing services are performed with a special sealant or caulk to fill in gaps and cracks, creating an airtight barrier. Although different sealants have varying properties, all are designed with similar make-up and materials.

Air Sealing is Often Done Before the Insulation

While insulation and air sealing are both important for improving energy efficiency, it’s important to understand the order in which they should be done. Air sealing should ideally be done before insulation installation to ensure that your home is properly sealed and any drafts or air leaks are addressed before adding more insulation.

Schedule a No-Cost Home Assessment for Insulation & Air Sealing Upgrades in Massachusetts

By upgrading the insulation and air sealing in your home, you can improve its overall comfort and energy efficiency. Absolute Home Insulation Plus offers no-cost Mass Save home assessments to test your current insulation and air sealing performance. Our team of experts will provide recommendations for upgrades and perform the necessary services to keep your home in Massachusetts comfortable year-round. To learn more and schedule a consultation, call 888-861-0983 or submit an online request!

Request a no-cost home energy assessment!