3 Uses For Spray Foam Insulation To Improve Your Home's Energy Efficiency

Environmental Blog

The most common use for spray foam is in new construction. The high R-value of spray foam insulation means it can provide a more effective thermal barrier with less thickness. Closed-cell spray foam can even act as a vapor barrier, helping to control humidity and keep moisture and pests from entering the home.

However, you don't have to give up on the benefits of spray foam if you live in an older home with existing fiberglass insulation. While tearing down walls and removing your old insulation probably isn't cost-effective, there are other ways to use spray foam insulation to improve energy efficiency. Below you'll find three spray foam upgrade options for every budget.

1. Low Cost: Draft Sealing

If you own an older home, there's a good chance you have numerous drafts from doors and windows. A home energy audit is often a great way to locate these problems, but there are plenty of do-it-yourself methods if you want a cheaper option. You'll often find that drafts originate from the trim around your doors and windows.

Replacing older windows and doors is one option, but it may not solve the problem entirely. Instead, a relatively low-cost approach is to add spray foam insulation to the gaps behind the trim. This seal can help keep out drafts and reduce your energy bills. Note that using the wrong type of insulating foam can cause issues, so you may want to consider having a professional perform this job.

2. Medium Cost: Attic Insulation

Attic insulation is a relatively low-cost way to improve your home's energy efficiency drastically. If you have a modern home, there's a good chance you already have blown fiberglass or fiberglass batts in your attic. While these materials help, they can't offer the same insulating qualities as spray foam. Additionally, it may be harder to use fiberglass to insulate tight corners and hard-to-reach areas fully.

Although replacing new insulation may not be worthwhile, tearing out old and worn fiberglass can be a substantial upgrade. Not only will you help to stop heat from escaping into your attic during the winter, but you'll also help reduce the heat load on your HVAC system during the summer.

3. High Cost: Basement Insulation

Insulating a basement is often one of the most cost-effective upgrades you can make for your home. Despite typically costing more than other insulation options, you may be able to recoup your investment in just a few years. Spray foam can be an excellent option for this task, potentially saving you a substantial amount on your home's heating costs.

While upgrading your insulation may not be as exciting as some other home renovations, it's an improvement that will pay off in the long run. And, even better, by taking steps to make your home more energy-efficient, you'll save money on your utility bills that you can reinvest into other projects around your home.

For more information about using spray foam insulation, contact a local company.


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The ways humans are obtaining energy for heating and electricity is changing. Years ago, most homes were heated by the burning of coal or wood. Electricity was largely generated by burning coal, too. As we began to realize that burning fossil fuels was not great for the environment, we made changes. We began turning to greener energy sources like solar radiation and natural gas. If you're as passionate about sustainable energy use as we are, you're going to love this website. We've compiled articles about all sorts of energy-related topics. Learn how to use less energy at home and how your choices impact the planet. The sky is the limit!