Attic Insulation Options Offer Different Pros and Cons

Basement insulation plays a critical role in home energy performance. In fact , most building scientists agree that the attic should be the initial “target” area for insulation and air-sealing upgrades. Almost all homes are built with code-required minimum levels of attic padding that are far below current recommendations established by the Oughout. S. Dept. of Energy.

Homeowners considering an attic insulation up grade have a number of different insulation materials to consider. Each attic defensive option has distinct advantages and limitations. Understanding all these pros and cons can help you select the best insulation upgrade for your crawl space.

Fiberglass batts

Fiberglass batt insulation is popular since it’s affordable and universally available. Regardless of age, many houses get attics insulated with fiberglass batts. The batts are normally installed between attic floor joists, and unfaced batts are more common than faced batts in attic pv panel.

PROS: More affordable than other types of insulation jupiter fl. Best sort of insulation for DIYers to install. Unlike blown insulation, batts can be lifted up and moved to provide access to the actual ceiling below, can lights and ceiling-mounted vent supporters. Existing batt insulation can often be left in place when supplied insulation is added to increase overall R-value in the experts.

CONS: Difficult to install correctly around obstructions. Voids exactly where insulation is missing contribute to significant energy loss. Various layers of batt insulation are required to achieve recommended R-values in most parts of the country; this makes it impossible to use the attic intended for storage unless special platforms are built prior to insulation installing. Fiberglass insulation can’t stop air movement.

Blown efficiency

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

PROS: Installing can be completed quickly and affordably. Blown insulation normally results in more complete coverage than is possible with fiberglass batts.

CONS: A thick layer of insulation (at least 16 in. for northern parts of the Ough. S. ) is required, and this makes it impossible to use the particular attic space for storage unless special platforms are built prior to the installation of the insulation. Cellulose and loose-fill fiberglass insulation can not stop air movement.

Spray foam

Professional spray foam insulation contractors typically insulate an attic by applying a solid layer of spray foam between the rafters. Two types of froth are used: open-cell and closed-cell. Opinions vary as to what treatment is best in an attic installation, but closed-cell spray froth is used more frequently.

PROS: Closed-cell spray foam provides the top R-value per in. (about R-6) of any increase insulation. It also creates an air and moisture hindrance, so it eliminates the need for separate air-sealing work. Insulating within the roof deck instead of on the attic floor frees upwards attic space for storage and other purposes. This strategy also improves typically the efficiency of HVAC components (like air handlers along with ductwork) located in the attic.

CONS: Most expensive attic insulating material. A thick layer of foam applied to the underside of the roof structure sheathing can trap moisture and cause sheathing for you to rot.

Rigid foam

Rigid foam hasn’t been used while extensively for attic insulation until a most recent growth. In one unique system, a proprietary rigid foam -panel is fastened to the underside of attic rafters, building an air and thermal barrier.

PROS: Provides the many benefits of spray foam, with the additional benefit of maintaining attic space ventilation. The potential for roof sheathing moisture damage is taken away. The rigid foam is faced with a radiant barriers that reflects heat for additional energy savings -another edge over spray foam.

CONS: The system is available in limited regions, so it’s not as widely available as spray foam. Installation charge is greater than fiberglass batts and blown insulation, nevertheless competitive with spray foam.