Air Flow Ventilation In Relation The Insulation R Value Attic Insulation Options Offer Different Pros and Cons

You are searching about Air Flow Ventilation In Relation The Insulation R Value, today we will share with you article about Air Flow Ventilation In Relation The Insulation R Value was compiled and edited by our team from many sources on the internet. Hope this article on the topic Air Flow Ventilation In Relation The Insulation R Value is useful to you.

Attic Insulation Options Offer Different Pros and Cons

Attic insulation plays an important role in a home’s energy efficiency. In fact, most building scientists agree that the attic should be the first “target” area for insulation and air-sealing upgrades. Most homes are built with code-required minimum levels of attic insulation that are well below current recommendations established by the US Department of Energy.

Homeowners looking to upgrade their attic insulation have many different insulation materials to consider. Each attic insulating option has distinct advantages and limitations. Understanding these pros and cons can help you choose the best insulation upgrade for your attic.

Fiberglass bats

Fiberglass batt insulation is popular because it is affordable and widely available. Regardless of age, most homes have attics insulated with fiberglass batts. Batts are typically installed in attic floor joists, and unfaced batts are more common than faced batts in attic installations.

Advantages: More affordable than other types of attic insulation. The best type of insulation for DIYers to install. Unlike blown insulation, batts can be lifted up and moved down to provide access to ceilings, lights and ceiling-mounted vent fans. Existing batt insulation can often be left in place when blown insulation is added to the attic to increase the overall R-value.

Cons: Difficult to install properly around obstacles. Voids where insulation is missing cause significant energy losses. Many areas of the country require multiple layers of batt insulation to achieve recommended R-values; It is impossible to use the attic for storage without creating a special platform before the installation of insulation. Fiberglass insulation cannot stop air movement.

Blown insulation

Two main types of blown (or blow-in) insulation are commonly used: cellulose and loose-fill fiberglass. Both types are designed to be installed using special blowing equipment.

Advantages: Installation can be completed quickly and affordably. Blown insulation generally results in more complete coverage than is possible with fiberglass batts.

Cons: A thick layer of insulation (at least 16 inches for the northern parts of the US) is required, and this makes it impossible to use the attic space for storage, unless a special platform is built before the insulation is installed. Cellulose and loose-fill fiberglass insulation cannot stop air movement.

Spray foam

Professional spray foam insulation contractors typically insulate attics by applying a thick layer of spray foam to the rafters. Two types of foam are used: open-cell and closed-cell. Opinions differ as to which type is best in attic installation, but closed-cell spray foam is used more frequently.

Advantages: Closed-cell spray foam provides the highest R-value per inch (about R-6) of any attic insulation. It also creates an air and moisture barrier, so it eliminates the need for separate air-sealing work. Insulating under the roof deck instead of the attic floor frees up attic space for storage and other purposes. This strategy also improves the efficiency of HVAC components (such as air handlers and ductwork) located in the attic.

Cons: The most expensive attic insulation. Applying a thick layer of foam to the underside of the roof sheathing traps moisture and rots the sheathing.

Rigid foam

Rigid foam was not used for attic insulation until more recent developments. In a unique system, a proprietary rigid foam panel is attached to the underside of the attic rafters, creating an air and thermal barrier.

Advantages: Provides all the benefits of spray foam, with the added benefit of maintaining attic ventilation. The possibility of moisture damage to the roof is eliminated. Rigid foam faces a radiant barrier that reflects heat for additional energy savings—another advantage over spray foam.

Cons: The system is available in limited areas, so it is not as widely available as spray foam. Installation costs are higher than fiberglass batts and blown insulation, but competitive with spray foam.

Video about Air Flow Ventilation In Relation The Insulation R Value

You can see more content about Air Flow Ventilation In Relation The Insulation R Value on our youtube channel: Click Here

Question about Air Flow Ventilation In Relation The Insulation R Value

If you have any questions about Air Flow Ventilation In Relation The Insulation R Value, please let us know, all your questions or suggestions will help us improve in the following articles!

The article Air Flow Ventilation In Relation The Insulation R Value was compiled by me and my team from many sources. If you find the article Air Flow Ventilation In Relation The Insulation R Value helpful to you, please support the team Like or Share!

Rate Articles Air Flow Ventilation In Relation The Insulation R Value

Rate: 4-5 stars
Ratings: 4021
Views: 39032577

Search keywords Air Flow Ventilation In Relation The Insulation R Value

Air Flow Ventilation In Relation The Insulation R Value
way Air Flow Ventilation In Relation The Insulation R Value
tutorial Air Flow Ventilation In Relation The Insulation R Value
Air Flow Ventilation In Relation The Insulation R Value free
#Attic #Insulation #Options #Offer #Pros #Cons

Source: https://ezinearticles.com/?Attic-Insulation-Options-Offer-Different-Pros-and-Cons&id=6517329

Related Posts