Updated: October 9, 2026
A well-insulated roof and attic is one of the key components to having an efficient and comfortable home. Finding the right company to either upgrade the current insulation or install new insulation can be a tedious task that’s easy to put on the back burner. The reality is that neglecting this aspect of your home will leave the household yearning for proper insulation.
So, what are the best types of insulation for your roof and attic? Larson & Keeney Home Services is here to break that question down for you by exploring the many types of available insulation options and their benefits. By choosing Larson as your home insulation provider, home comfort will be back in no time.
Benefits of Proper Roof and Attic Insulation
An insulated roof and attic provide much more than just home comfort. Insulated roofs and attics also provide homeowners with these noteworthy benefits:
Lower Energy Bills
A well-insulated roof and attic are going to keep your home warmer during the winter and cooler during the summer. This makes insulation of higher importance for homeowners as insulation provides comfort all year long. This makes for lower energy bills, which no homeowner will complain about.
Sound Control
Insulation also acts as another layer to help with sound control. Insulation absorbs various sounds transmitted through the home’s walls and floors. With sound-control insulation, your home will be much quieter. Even insulation in minor rooms throughout the house will make a difference.
Increased Energy Efficiency
One of the biggest benefits of insulation is increased energy efficiency. Effectiveness can be furthered by making sure there are no cracks, openings, or leakages to provide an opportunity for wasted energy. Use sealants and caulk to fill these areas and enjoy a home with improved energy efficiency.
Moisture Control
An array of everyday activities adds moisture to the air in the form of water vapors. These vapors can be trapped inside walls and turn into mold and mildew growth. Mold and mildew growth can damage your home and create health concerns for the household. Proper insulation can help maintain more consistent surface temperatures, but preventing moisture problems also requires appropriate air sealing, ventilation, and moisture management. Insulation alone does not prevent mold or mildew.
Types of Roof and Attic Insulation Compared
Several types of insulation can be used in roofing and attic applications, but not every material is appropriate for every home. The best choice depends on your home’s construction, existing insulation, and energy-efficiency goals. Learn more about our attic insulation services as you compare the options below.
Fiberglass Batt Insulation
Fiberglass batt is a popular type of insulation in residential and commercial spaces and is made from tightly woven glass fibers. This material allows for effective thermal and acoustic insulation. It also is a perfect option for framed cavities and is easy to install between rafters, joists, and studs. Fiberglass batts are often an economical insulation option, although installation costs depend on the space, required R-value, and labor involved.
Fiberglass batt insulation conveniently comes in pre-cut pieces and is relatively inexpensive compared to other insulation options. Fiberglass batt insulation is also
fire-resistant, easily recyclable, and provides great moisture resistance, making it ideal for roofs and attics. In terms of cons, precautions during installation are needed to avoid potential eye and skin irritation from loose fibers.
Polyisocyanurate (Polyiso) Insulation
Polyisocyanurate insulation comes in the form of thick boards of thermal material that are highly effective. This type of insulation material is commonly used in construction projects and is offered in several different thickness options to eliminate thermal bridges.
Polyisocyanurate insulation is known for its adaptability and is faced with foil for enhanced and efficient
performance. Polyisocyanurate insulation is ideally used in roofs and attics because of its compressive strength, resistance to rot, and ease of handling during installation. Polyisocyanurate insulation also has a high R-value, perfect for limited insulation spaces such as roofs and attics.
Expanded Polystyrene (EPS)
Expanded polystyrene is a type of insulation made up of a lightweight and rigid foam material that is commonly used in construction and packaging. Made up of solid polystyrene beads, it’s recyclable and 98% air.
Expanded Polystyrene has great insulation properties and has an R-vale of R-3.9 to R-4.4 per inch. This insulation is applied to floors, walls, and roofs because of its durability, corrosion resistance, and being a cost-effective solution.
Spray Foam Insulation
Spray foam insulation is found in two different types: closed-cell and open-cell. Closed cells are dense, have higher R-values, and are good at preventing heat transfer and water damage, while open-cell offers more flexibility and are great for sound insulation but are less dense. Both varieties excel when it comes to air sealing and preventing water infiltration.
Spray foam insulation offers superior versatility and sealing properties, allowing it to be applied to numerous spaces and oddly shaped areas like roofs and attics. Spray foam insulation is usually applied in liquid form and expands into solid foam.
Reflective Foil Insulation
Reflective foil insulation is made up of layers of reflective aluminum foil, thermo-foam, and polypropylene to help reflect heat, capture air, and maintain temperatures. Reflective foil insulation is light, easy to install, and works great for roofs.
Reflective foil insulation comes in different sizes and thicknesses and can fit between rafters and joists. Alongside maintaining temperatures year-round, this type of insulation meets building regulations and standards for performance and quality.
Perlite Cover Boards
Perlite cover boards are made from expanded perlite ore, cellulose fibers, and other materials. Perlite cover boards are known for their fire and moisture resistance while regulating temperature and shielding buildings from extreme thermal fluctuations.
Perlite cover boards have a porous structure, which boosts their thermal insulation properties. Ideal for
roofing applications like low slopes and flat roofing, perlite cover boards are lightweight, durable, and environmentally friendly. In the end, offering improved energy efficiency and superior strength and insulation.
Blown-In Insulation
Structural Insulated Panels (SIPs)
Where Should You Add Insulation in Your Home?
Certain areas throughout your home tend to be under-insulated or uninsulated, meaning air passes those areas that aren’t able to properly maintain temperatures. For that reason, these areas should be insulated in your home:
- Attic
- Basement
- Crawlspaces
- Exterior walls and floors
- Garage
- Knee walls
Professional Roof and Attic Insulation Services
Choosing the right insulation depends on your home’s construction, existing insulation, and comfort goals. Larson & Keeney Home Services helps homeowners evaluate their insulation needs and identify appropriate improvements. Contact our team to learn more about professional roof and attic insulation services.
