Johns Manville R-38 24 in. x 48 in. Unfaced Fiberglass Insulation Batt

Johns Manville R38 24 x 48 Unfaced Fiberglass Insulation Batt

Johns Manville Unfaced Formaldehyde-free ™ fiberglass insulation is great for effective thermal and noise control. Johns Manville unfaced insulation is offered in pre-cut batts to fit common wall and ceiling spaces. Raise the overall efficiency of your house with fiberglass wall insulation. It’s thermal efficiency aids to keep temperature levels down, decreasing energy loss and also energy prices while additionally decreasing space to space sound transmission.

• Pre-Cut & Easy to Install for standard size wall cavities
• Formaldehyde-free: Greenguard GOLD certified & SCS Certified to be formaldehyde free
• Sound Control: Reduces sound transmission through exterior and interior walls, floor and ceiling assemblies.
• Thermally Efficient: Effective resistance to heat transfer
• 72 Square Feet per Bag
• Fiberglass Insulation Batt 24 in. x 48 in.x 12 in thick
• Unfaced – Easier to install as its easier to cut and doesn’t bunch
• Easy Installation – These batts are easy to handle and friction fit in cavities.
• Bags per Master Pack: 4
• Pieces per Bag : 11

Installation Instructions | Data Sheet | Product Selector Guide

About Johns Manville

Johns Manville Unfaced Fiberglass Batt insulation is Made in the UNITED STATES. All batts are precut to tightly fit into typical cavities. Founded in 1858, Johns Manville is one of the best quality and also most offered fiberglass insulation item in the US.

Johns Manville makes eco-friendly formaldehyde totally free fiberglass. They make fiberglass insulation for the residence as well as industrial applications from R11,R13,R15,R19,R21,R25,R30,R38 and R49. JM supplies high quality insulation for noise, thermal as well as energy conserving services for todays houses.

A substantial bit of warm is removed via the roof, that makes the attic room an important location to protect. Based on the US Department of Energy recommended R value you need to insulation your ceiling with R 30 or R38.

Appropriate attic insulation is the best method to avoid heat loss in the winter months and maintain great air in the summertime. So it’s time to pay attention to what’s taking place up there.

If you seem like your property is seeping money via a drafty or unsealed attic, conduct an energy audit and/or make use of a thermal camera to spot cool places up there. It’s entirely possible to fill up those openings though, depending on the age of your insulation, you could be much better off changing your attic insulation outright instead of filling in the interspaces.

Let us Talk R-Value

To start, determine what R-value is often recommended for your home based on your place. You can discover this information from the Department of Power. If you aren’t knowledgeable about R-value, it’s basically an insulating material’s resistance to hotness flow, gauged by its thermal resistance or R-value. The greater the R-value, the extra efficient an insulating material is. Your home’s R-value rating will certainly guide you towards the kind of insulation you need.

In general, an attic room’s R-value should be between R-30 and R-49. In especially cold climates, you might go up to R-60. Let’s state the insulation you’ve picked has an R-value of three per inch and you wish to attain a total value of R-36. You’ll want about 12 inches of insulation product.

The following are one of the most popular choices for attic room insulation, along with an estimate on pricing.

Blanket or Batt Insulation

Covering or Batt insulation is offered as batts or rolls and also is the easiest DIY insulation product. In fact allot of property owners choose this Do It Yourself task as you can save over $1 per foot by laying it yourself. It’s available in fiberglass, mineral wool, plastic fibers, and also organic fibers. Fiberglass batts is one of the most low cost of the lot. This sort of insulation is optimal for attics with common spaced beams and really few blockages. A lot of batt insulation batts are sixteen inches or 24 inches in width. They can be found in 4 foot segments.

You can also buy fiberglass ceiling insulation in unfaced or paper faced. The paper facing serves as a vapor obstacle. It can likewise help emit heat either back into the house for cold climates or back out of the house for warmer climates. You wish to apply the facing either in or out depending upon your environment.

Batts should be thoroughly cut to fit snugly around vents to maintain their R-value effectiveness. Price per square foot can differ based upon thickness as well as material, but it’s normally 0.35 to 0.90 cents per square foot. You can anticipate an R-value of 3.1 to 3.8 per inch.

Blown insulation

Loose-fill insulation likewise known as Blow in insulation is outstanding for installing in attics with extremely little space and numerous obstructions such as vents as well as cross-beams. It can be successfully blown over existing insulation as well as is offered in fiberglass, cellulose, and mineral wool. Cellulose is the most efficient product and has an R-value of 2.2 to 3.8 per inch, yet if exposed to moisture it can get mildewy.

This sort of insulation can be purchased from Pacific Insulation and also spread out by hand, or you can lease an easy-to-use equipment that blows it in place, which will set you back about $100 per day. If you work with a professional, it sets you back about $1 per square foot.

Pacific Insulation offers different brand names of loose blow in insulation. The cost is the same for all fiberglass blow and all brands perform relatively the same.

Spray Foam Insulation

This type of insulation is costly and also not a do-it-yourself task, yet it has among the highest possible R-values at 3.5 per inch for open-cell and also 6.5 for closed-cell.

Both types are made with polyurethane. The distinction is that closed-cell foam cells are loaded with a gas that allows the foam to expand and cover the spaces around it. Open-cell foam cells are loaded with air, which offers the insulation a spongy structure. Both kinds of insulation supply an effective air closure, however closed-cell insulation can likewise act as a moisture vapor obstacle if that is required.

Open-cell spray-foam insulation is roughly $3 to $3.25 per square foot and also closed-cell spray foam is about $3.25 to $4.50 per square foot.

U.S. Department of Energy Recommended Total R-Values

The following 2008 Department of Energy zone recommendations are based on comparing estimated future energy savings to the current cost of installing insulation. The DOE gives a range for many locations for the following reasons:

• Energy costs vary greatly over each zone
• Installed insulation costs vary greatly over each zone
• Heating and cooling equipment efficiency varies from house to house
• Best estimate of future energy costs may not be exact.
• Reference : Department of Energy Insulation Fact Sheet
  (DOE/CE-0180 2008 update) DOE/CE-0180 2008, Insulation Fact Sheet.

 

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