attic insulation best options for a home

Exploring the Various Types of Attic Insulation for Maximum Energy Efficiency

Insulation plays a huge role in maintaining energy efficiency and the comfort within your home. Whether you’re looking to replace existing attic insulation or to start anew, understanding the different types of home insulation that is available is a key element in choosing the right one. Each type of insulation offers distinct advantages and considerations that can impact both your wallet, environment, and your family’s level of comfort.

Understanding R-Value

Before delving into insulation types, it’s essential to grasp the concept of R-value. R-value measures an insulation material’s resistance to heat transfer – the higher the R-value, the better its insulating properties. When choosing attic insulation, consider your climate and the desired level of insulation needed to maintain a comfortable indoor environment for you and your family.

What is the Best Type of Insulation for a Home in the American Southwest?

In the American Southwest, where hot and dry climates dominate, choosing the right insulation is important to maintain comfort and energy efficiency. The main goal in this region is to keep the indoor environment cool while minimizing the use of air conditioning (and therefore cutting costs). There are several insulation types that are well-suited for the Southwest’s climate and conditions. The professionals at Attic Construction can help you decide which type of insulation is best for your home.

Cellulose vs. Fiberglass Insulation: Comparing Two Common Options

When it comes to insulating your home, two popular choices that often come up are cellulose and fiberglass insulation. Each has its own set of benefits and considerations, making them suitable for different situations.

Cellulose Insulation

Blown cellulose insulation is made from recycled paper products, typically newspapers, treated with flame-retardant chemicals. It’s an eco-friendly option that provides excellent thermal performance and soundproofing qualities. Cellulose insulation is often used in walls and attics, and it can be blown into existing wall cavities without extensive renovation. However, cellulose tends to settle over time and lose its R-value, creating a less than ideal situation when it comes to maximizing your home’s energy efficiency and cost savings.


Cellulose insulation is often blown into attics, walls, and other cavities using special equipment. It conforms well to irregular spaces and creates a seamless thermal barrier.

Energy Efficiency

Due to its higher R-value, cellulose insulation can provide high energy efficiency and reduced heating and cooling costs.

Environmental Impact

Because it is made from recycled materials, cellulose insulation is environmentally-friendly and has a relatively low environmental impact.

Fiberglass Insulation – What is Batt Insulation?

Fiberglass insulation is one of the most commonly used types. It’s comprised of fine glass fibers and is available in both batts (blankets) and loose-fill forms. This type of insulation is known for its affordability, fire resistance, and resistance to moisture. Fiberglass insulation is commonly used in walls, attics, and crawl spaces. However, it can be irritating to the skin and lungs during installation, requiring proper protective equipment. At Attic Construction, we use the brand Owens Corning, which is extremely safe and has received the Energy Star Certificate.

Thermal Performance

Due to its inherent properties, fiberglass insulation has remarkable thermal performance. Plus, energy efficiency can be even further improved by using thicker layers.

Allergens and Health Considerations

As with any type of insulation, the proper protective gear should be worn during installation. Contact professional insulation installers if you have any questions about installing insulation.

Fire Resistance

Fiberglass insulation is naturally fire-resistant and doesn’t require additional chemical treatments to achieve fire-retardant properties.

Moisture Resistance

Fiberglass insulation is non-absorbent and won’t hold moisture. This characteristic helps prevent mold growth and structural damage.

The choice between cellulose and fiberglass insulation depends on your specific requirements, budget, and priorities. Fiberglass offers better thermal performance, sound absorption, and environmental friendliness. It is also easier to install and is inherently fire resistance.

Before making a decision, it’s recommended to consult with insulation professionals who can assess your home’s needs and provide tailored recommendations. Ultimately, both cellulose and fiberglass insulation can effectively improve your home’s energy efficiency and comfort, so the choice comes down to what aligns best with your preferences and circumstances.

Spray Foam Insulation

Spray foam insulation is a versatile option that expands upon application, filling gaps and creating a seamless barrier against air and moisture. It comes in two main types: open-cell and closed-cell. Open-cell foam is less dense and more affordable, offering sound dampening but with lower R-values. Closed-cell foam is denser and has higher R-values, making it ideal for areas with limited space. Spray foam insulation is commonly used in attics, walls, and roofs, but professional installation is recommended due to the precision needed when applying it.

Mineral Wool Insulation

Mineral wool insulation, also known as rock wool or slag wool, is made from molten rock or industrial byproducts spun into fibers. It’s a fire-resistant option that offers excellent thermal and sound insulation. Mineral wool insulation is used in various applications including walls, ceilings, and floors.

Polystyrene Insulation

Polystyrene insulation comes in two main types: expanded polystyrene (EPS) and extruded polystyrene (XPS). EPS is a lightweight, rigid foam that provides good thermal insulation and can be used in walls, roofs, and foundations. XPS is denser and more moisture-resistant, making it suitable for below-grade applications and areas prone to high humidity. Polystyrene insulation is known for its durability and resistance to water absorption, but its environmental impact and long-term performance can vary.

Reflective Insulation with Radiant Barriers

Reflective insulation works by reflecting radiant heat away from the home, making it particularly effective in hot climates. It’s best used in combination with other insulation types to address multiple modes of heat transfer. Radiant barrier installation, a subset of reflective insulation, is installed in attics to reflect heat away from the living spaces below, keeping them cooler and reducing the need for air conditioning.

Making the Right Choice

The most effective insulation type for your needs depends on various factors like climate, budget, available space, and your home’s specific requirements. Consulting with insulation professionals and taking the home’s unique characteristics into consideration is crucial. While some insulation types may have higher initial costs, the long-term energy savings and improved comfort they provide can often outweigh the upfront investment.

Proper installation of attic insulation is important to make sure that the insulation performs as it should. Consulting with professional home insulation contractors and considering the unique characteristics of each type of insulation will help you make an informed decision that contributes to the energy efficiency and comfortable living environment within your home.

How Much Money Can I Save with Attic Insulation?

A recent, powerful new study from the ICF shows that homeowners may yield up to a 45% return on their installation investment in as little as 6 months to one year; making insulation installation a significantly impactful energy saving home improvement.

Recent analyses indicate that investing in fiberglass insulation for your attic can yield a return on investment that generally equals or exceeds the initial cost, enhancing your home’s overall value. Plus, potential tax incentives may be available to assist in funding this upgrade. Remember, these incentives are subject to change, so it is advisable to consult with a qualified tax professional for accurate information on current regulations.

If you have additional questions or would like more information about home insulation types or which insulation is best for your attic, contact us today. With a decade of exceptional work and outstanding customer service under our belt, we continue to be proud of the services we provide our customers in the American Southwest.

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Written By Joseph Sheiner

Joseph Sheiner is a construction industry professional with over 15 years of experience. He began his career in the insulation industry in 2012, and co-founded Attic Construction Inc in 2013. As CEO of the company, Joe oversees all operations and is in charge of training and product knowledge.

Under Joe’s leadership, Attic Construction has become the largest leading Attic Restoration Company in San Diego, Orange County and Phoenix. He has personally performed and supervised insulation work in over 7000 homes. He is certified by Owens Corning as a CEE (Certified Energy Expert) and is a licensed contractor by the CSLB.
Most recently, Joe has helped expand Attic Construction to two additional locations – Orange County and Phoenix. He is currently working on expanding to additional locations in the near future.

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Great work! Our attic went from totally disgusting to pristine.  They are courteous and professional and clean up after themselves.

-Karen L. Santee, CA

Andrew was very informative and helpful during the whole process. Excellent communication and his team did a great job. He came on Sunday and the work was done and completed by Tuesday. Highly recommend to anyone who is looking for a fair prices and great service.

– Joey E. San Diego, CA