Fiberglass Batts In Attic

We re proud to say our products can be found in some of the tallest and safest buildings around the globe like salesforce tower.

Fiberglass batts in attic.

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. When it comes to insulating your attic there are really only two types of insulation worth considering fiberglass batts or blown in insulation. Never lay heavier batts such as cotton over lighter ones like fiberglass.

Adjoining batts should be butted snugly together but not tight enough to compress them. Owens corning r 30 ecotouch pink unfaced fiberglass insulation batt 16 in. There are many voids in the fiberglass batts and i can see the backsides of many of the outlet boxes. According to the article fiberglass has held fairly steady at that level for the past few years.

Place a new layer of unfaced batts perpendicular to the old layer to cover any gaps in the lower layer. 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. Fiberglass comes from what i ve heard one major fiberglass insulation manufacturer call a rapidly renewable resource sand. The photo above shows an attic insulated with blown cellulose.

These walls are of 2 4 construction with vertical unfaced fiberglass batts held in place with a thin mesh. Case study salesforce tower. As you can see fiberglass is the dominant insulation material. 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.

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. Once installed and expanded to the uniform manufactured thickness batts offer a known r factor. 1 the interior walls on the backsides of these attic walls are warmer to the touch than other walls in the room. 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.

You ll compress the lower layer and reduce its effectiveness. Because of this this method will normally require you to hire a professional. This will lead to non uniform r values.