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Do I Need to Remove Old Insulation Before Installing New Spray Foam in Colorado?

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Insulation is an important aspect of any home‘s construction that helps in keeping the house warm in winter and cool in summer. Upgrading insulation can be a great way to improve energy efficiency and reduce energy costs. If you’re planning to upgrade your insulation, you might be wondering if you need old insulation removal before installing new spray foam.

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Colorado Old Insulation Removal: What You Need To Know

Keep reading to explore whether or not old insulation needs to be removed before adding spray foam insulation.

Why Use Spray Foam In Your Colorado Home?

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Spray foam insulation is a type of insulation that is applied as a spray foam mixture that expands and hardens on contact with a surface. It is made of two main components, isocyanate and polyol resin, which are mixed together at the time of application to form a foamy substance. Spray foam insulation is known for its high-insulating properties and versatility, making it a popular choice for residential and commercial buildings.

One of the main benefits of spray foam insulation is its ability to fill even the smallest cracks and gaps, making it highly effective at preventing air leaks, preventing water damage, improving energy efficiency, and more. It also provides a strong and durable barrier against moisture, mold, and pests. Additionally, spray foam insulation is environmentally friendly and has a long lifespan, making it a cost-effective solution for insulation needs.

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Steps A Fort Collins Insulation Contractor Takes When Installing Foam

The steps that a contractor will take to make sure your home is insulated are:

  • Sealing: The contractor will seal any gaps, cracks, or holes in the surfaces to be insulated. This helps to prevent air leaks and ensure that the insulation will perform at its best.
  • Spraying: The spray foam insulation is mixed and then applied to the surfaces using a specialized spray foam machine. The foam will expand and fill the space, creating a tight seal that provides effective insulation.
  • Curing: After the spray foam has been applied, it will cure and harden into a solid form. This process typically takes a few hours, after which the area will be ready for use.

Related Article: Feeling Uncomfortable In Your Room Above The Garage? Follow These Insulation Tips

Do You Need to Remove Old Insulation Before Installing New Spray Foam?

The short answer is: it depends. There are a few factors that need to be considered before making a decision. Here are some key things to keep in mind:

Type of Old Insulation

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If your old insulation is in good condition, it may not be necessary to remove it. However, if it’s damaged, compressed, or has reached its intended lifespan, it’s best to remove it. Old insulation types can include –

  • Fiberglass Batts: This is a type of insulation that is made from fiberglass and comes in pre-cut batts or rolls that are designed to fit between wall studs or in attics.
  • Cellulose: This type of insulation is made from recycled paper and other organic materials. It is often blown into walls or attics to provide insulation.
  • Rockwool: This type of insulation is made from melted rocks and minerals that are spun into fibers. It is commonly used in walls, ceilings, and attics.
  • Vermiculite and Perlite: These types of insulation are made from natural minerals that are processed and expanded to create a lightweight, insulating material.
  • Polystyrene: This type of insulation is made from plastic and comes in two forms: expanded polystyrene (EPS) and extruded polystyrene (XPS).
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New Insulation Type

If you’re installing a type of insulation that is more efficient than your existing insulation (like foam insulation), removing the old insulation may be necessary. This is because the new insulation may not perform as well if it’s installed over old insulation.

Related Article: Why Is Insulation Important In Fort Collins, CO Homes?

Home Type in Colorado

If you live in an older home with many layers of insulation, it may be best to remove some of the older insulation to make room for the new insulation. This will help ensure that the new insulation is installed properly and performs at its best. There are a number of different home types that classically have insulation. These are:

  • Single-family homes: This type of home is typically a standalone structure that is designed for a single family. It can benefit from insulation in the walls, attic, and basement.
  • Townhomes: This type of home is a type of attached housing that shares one or more walls with another home. It can benefit from insulation in the walls, attic, and basement.
  • Condos: This type of home is a type of multi-unit housing that is typically owned by individual homeowners. It can benefit from insulation in the walls, ceilings, and floors.
  • Manufactured homes: This type of home is a type of prefabricated housing that is built in a factory and then transported to a site. It can benefit from insulation in the walls, roof, and floor.
  • Historic homes: This type of home is an older home that has historical significance. It can be challenging to insulate these homes because of their age and unique architecture, but it is possible to add insulation without compromising their historical value.
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Related Article: Do-It-Yourself Insulation Problems: 6 Things That Lead To DIY Nightmares


In conclusion, it’s important to hire a reputable professional to assess your insulation needs and make the best recommendation for your specific situation. Removing old insulation may not always be necessary before installing new spray foam, but it may be the best option in some cases to ensure that your new insulation performs at its best. A professional insulation contractor will be able to assess your specific needs and make the best recommendation for your home.

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Why Insulation Is Important Fort Collins CO

To improve the thermal envelope of your home and receive the many benefits that proper insulation has to offer, work with a professional insulation company for the best results. They can consider all of the necessary factors that will improve efficiency, comfort, and more. Ascend Construction specializes in insulation removal and installation, energy conservation, energy audits, whole house fan installations, and more in Fort Collins, Colorado, and the neighboring areas.

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Contact Ascend Construction for a free consultation today. We can provide you with practical solutions to address the problem areas in your Fort Collins home. All of our services are affordable, and our work is guaranteed. Click here to contact us, or click the button below to give Ascend Construction a call. We offer free, no-obligation, in-home consultations.

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Ascend Construction
301 S Howes St #1241
Fort Collins, CO, 80521
(970) 420-5495