Fiberglass Batts In Attic

If fiberglass batts become compressed losing some of their air pockets then this insulation may be more affected by air flow than cellulose which performs well regardless of density.

Fiberglass batts in attic.

The photo above shows an attic insulated with blown cellulose. When used in an attic space however both types of insulation are ineffective at air flow across the attic floor such as a strong gust of wind. As you can see fiberglass is the dominant insulation material. You ll compress the lower layer and reduce its effectiveness.

Blown in insulation thickness can vary in an attic space. Place a new layer of unfaced batts perpendicular to the old layer to cover any gaps in the lower layer. When it comes to insulating your attic there are really only two types of insulation worth considering fiberglass batts or blown in insulation. These walls are of 2 4 construction with vertical unfaced fiberglass batts held in place with a thin mesh.

Once installed and expanded to the uniform manufactured thickness batts offer a known r factor. We re proud to say our products can be found in some of the tallest and safest buildings around the globe like salesforce tower. Blown in insulation consists of bags of fiberglass or cellulose that are chopped up and blown in to the attic or wall from a machine. Case study salesforce tower.

This will lead to non uniform r values. I don t know about that but it s a common insulation material that works much better in the blown form than in batts. Adjoining batts should be butted snugly together but not tight enough to compress them. Batts fiberous rolls or sheets of owens corning fiberglass insulation installed between the ceiling joists in the attic are one of the most effective energy upgrades the average.

The r factor of blown in fiberglass is usually 2 3 to 2 8 per inch of material. There are many voids in the fiberglass batts and i can see the backsides of many of the outlet boxes. With a minimum of 70 recycled content the installed thermafiber products contributed to valuable leed credits helping the building earn a leed platinum certification. Owens corning r 30 ecotouch pink unfaced fiberglass insulation batt 16 in.

Never lay heavier batts such as cotton over lighter ones like fiberglass. Fiberglass comes from what i ve heard one major fiberglass insulation manufacturer call a rapidly renewable resource sand. Because of this this method will normally require you to hire a professional.