How Blanket Insulation Will Save You Money on Your Monthly Energy Bills

When it comes to improving your home’s energy efficiency, few upgrades offer as much impact per dollar as proper insulation — especially blanket insulation. Also known as batt or roll insulation, this material is widely used in both new builds and retrofit projects because it’s affordable, easy to install, and highly effective at slowing the transfer of heat.

But where you install blanket insulation matters just as much as the type you choose. If you're looking to get the most energy savings for your investment, here are the key areas in your home where blanket insulation can make a big difference.

1. Attics: Your Home’s #1 Heat Loss Zone

Heat rises — and in winter, it escapes right through your attic if it’s not properly insulated. In the summer, a poorly insulated attic can also trap radiant heat, forcing your AC to work overtime. Installing blanket insulation between the attic joists helps regulate indoor temperatures and keeps energy costs down year-round.

If your attic already has insulation, adding another layer of blanket insulation (as long as it's not compressed) can further increase your R-value and improve efficiency.

2. Exterior Walls: Critical for Comfort and Efficiency

Exterior walls are constantly exposed to the elements. Batt insulation installed between wall studs creates a thermal barrier that keeps conditioned air inside and outside air where it belongs. This not only helps lower heating and cooling bills but also improves indoor comfort by reducing drafts and cold spots.

For homes undergoing renovations or additions, it’s the perfect time to add or upgrade wall insulation before drywall goes back up.

3. Basement Walls and Rim Joists: Hidden Energy Leaks

Many homeowners overlook the basement, but insulating this space is essential — especially if it's partially or fully above ground. Blanket insulation can be installed between framing studs on finished basement walls, or in the rim joists around the perimeter of the basement ceiling.

These areas are common sources of heat loss and air leakage. Properly insulating them improves energy performance and can also help prevent moisture problems.

4. Floors Over Unheated Spaces

If you have a room above a garage or crawl space, chances are it’s colder than the rest of the house in the winter. Blanket insulation can be installed between floor joists to prevent heat loss into the unconditioned space below, improving the comfort of the living area above.

This is also a great solution for bonus rooms, sunrooms, and enclosed porches that often suffer from uneven temperatures.

5. Interior Walls for Sound and Temperature Control

While not directly tied to energy savings, adding blanket insulation to interior walls can help regulate room-to-room temperatures and reduce noise. It’s especially useful between bedrooms, bathrooms, or home offices for added comfort and privacy.

Maximize Savings, Minimize Waste

At Custom Insulation Company, Inc., we specialize in helping homeowners identify where insulation upgrades will make the biggest impact. Blanket insulation remains one of the most versatile and cost-effective materials available — and when it's installed in the right places, the savings add up quickly.

If you’re unsure about your home’s current insulation levels or want expert advice on where to insulate next, our team is here to help.

Contact Custom Insulation Company, Inc. today to schedule a home assessment or request a quote. Let’s make your home more comfortable, efficient, and affordable — one layer of insulation at a time.