Fiberglass Batts In Attic

This will lead to non uniform r values.

Fiberglass batts in attic.

Blown in insulation thickness can vary in an attic space. 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. We re proud to say our products can be found in some of the tallest and safest buildings around the globe like salesforce tower. I don t know about that but it s a common insulation material that works much better in the blown form than in batts.

As you can see fiberglass is the dominant insulation material. Once installed and expanded to the uniform manufactured thickness batts offer a known r factor. 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. There are many voids in the fiberglass batts and i can see the backsides of many of the outlet boxes.

71 of all the insulation used by the 1 600 builders surveyed is fiberglass 52 of it in the form of batts and 19 blown. 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. Owens corning r 30 ecotouch pink unfaced fiberglass insulation batt 16 in. The r factor of blown in fiberglass is usually 2 3 to 2 8 per inch of material.

With a minimum of 70 recycled content the installed thermafiber products contributed to valuable leed credits helping the building earn a leed platinum certification. These walls are of 2 4 construction with vertical unfaced fiberglass batts held in place with a thin mesh. Fiberglass comes from what i ve heard one major fiberglass insulation manufacturer call a rapidly renewable resource sand. When it comes to insulating your attic there are really only two types of insulation worth considering fiberglass batts or blown in insulation.

Adjoining batts should be butted snugly together but not tight enough to compress them. According to the article fiberglass has held fairly steady at that level for the past few years. Case study salesforce tower. 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.

You ll compress the lower layer and reduce its effectiveness. Because of this this method will normally require you to hire a professional. Never lay heavier batts such as cotton over lighter ones like fiberglass.