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Johns Manville Unfaced Batts

Features

Made Without formaldehyde

The EPA recommends limiting your exposure to formaldehyde. Choose Certified JM Formaldehyde-free™ insulation to promote a healthier home environment

Design

Lightweight unfaced fiber glass home insulation keeps your house quiet, comfortable and energy efficient

Size

Sized to fit standard cavities

Noise Reducing

Effective in controlling unwanted noise in internal walls

Fire-Resistant

Fire-resistant and noncombustible

Vapor Control Compliant

Suitable with additional vapor retarder or where no vapor retarder required

Energy Star® Rated

Energy Star® rated – when installed properly with air sealing, insulation can lower your energy bills by up to 20%

Environmentally Smart

Certified as containing a minimum of 25% recycled content

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Installation

Batts are pre-cut panels of insulation and are available in a variety of lengths, widths and R-values. Batt insulation is made to fit within most regular wall framing, which are usually spaced 12", 16", or 24" on center, and for either 8-ft. or 9-ft. high walls. For ceiling and attic spaces, use batts of R-30 or R-38. In exterior walls R-13 to R-21 is commonly used, while in interior walls where insulation is used for sound control, R-11-13 is used most frequently.


Unfaced batts are installed between framing members but not attached, allowing friction to hold them in place.


1.  Open the packages by cutting lengthwise through the side panel. Be careful to avoid cutting the product. The insulation will quickly expand to its full volume when the bag is opened.

2.  Gently push batts into the cavity so that it sits all the way in, especially at the corner and edges. Then, fluff it to its full expansion by pulling it forward to fill the depth of the cavity. The fit should be snug.

3.  Allow friction to hold the batts in place.

4.  Secure floor insulation with wire fasteners, sometimes called "lightning rods." Press the fasteners so they bow up gently against the subflooring without compressing it. Space the fasteners at least six inches from each end of the batt and 12" - 24" apart.

5.  Cut insulation about an inch wider than the space using a sharp utility knife against a safe backstop, such as an unfinished floor or other smooth, flat surface. Always cut on the unfaced side of the batt.

6.  For shorter spaces, cut the insulation to fit properly. Don't double it over or compress it. Compression changes the R-value of the insulation.

7.  If it takes more than one batt to fill the height of a wall cavity, make sure the two pieces are butted snugly together.

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Specs


JM Model #
Item Description
UPCA/Barcode
R Value
Dimensions
Sq. Ft. Per Bag
Best For...



U1319
R-15 Unfaced Batts
031979109661
15
3.5" D x 15" W x 93" L
67.81
16" on center 8 ft. exterior 2 x 4 wood stud walls


JM Model #
Item Description
UPCA/Barcode
R Value
Dimensions
Sq. Ft. Per Bag
Best For...



U1321
R-21 Unfaced Batts
031979110179
21
5.5" D x 15" W x 93" L
67.81
16" on center 8 ft. exterior 2 x 6 wood stud walls


JM Model #
Item Description
UPCA/Barcode
R Value
Dimensions
Sq. Ft. Per Bag
Best For...



U1322
R-21 Unfaced Batts
031979110186
21
5.5" D x 23.25" W x 93" L
103.97
24" on center 8 ft. exterior 2 x 6 wood stud walls


JM Model #
Item Description
UPCA/Barcode
R Value
Dimensions
Sq. Ft. Per Bag
Best For...



U1330
R-13 Unfaced Batts
031979109562
13
3.5" D x 15" W x 93" L
106.56
16" on center 8 ft. interior or exterior 2 x 4 wood stud walls


JM Model #
Item Description
UPCA/Barcode
R Value
Dimensions
Sq. Ft. Per Bag
Best For...



U1331
R-19 Unfaced Batts
031979110001
19
6.5" D x 15" W x 93" L
87.18
16" on center 8 ft. exterior 2 x 6 wood stud walls


JM Model #
Item Description
UPCA/Barcode
R Value
Dimensions
Sq. Ft. Per Bag
Best For...



U1332
R-19 Unfaced Batts
031979110018
19
6.5" D x 23" W x 93" L
133.68
24" on center 8 ft. exterior 2 x 6 wood stud walls


JM Model #
Item Description
UPCA/Barcode
R Value
Dimensions
Sq. Ft. Per Bag
Best For...



U1339
R-11 Unfaced Batts
031979109326
11
3.5" D x 15" W x 93" L
155.00
16" on center 8 ft. interior 2 x 4 wood stud walls


JM Model #
Item Description
UPCA/Barcode
R Value
Dimensions
Sq. Ft. Per Bag
Best For...




U1343
R-30 Unfaced Batts
031979110322
30
10.25" D x 16" W x 48" L
58.66
ceilings and attics


JM Model #
Item Description
UPCA/Barcode
R Value
Dimensions
Sq. Ft. Per Bag
Best For...




U1344
R-30 Unfaced Batts
031979110339
30
10.25" D x 24" W x 48" L
88.00
ceilings and attics


JM Model #
Item Description
UPCA/Barcode
R Value
Dimensions
Sq. Ft. Per Bag
Best For...

 


U1354
R-13 Unfaced Batts
031979109579
13
3.5" D x 23" W x 93" L
163.94
24" on center 8 ft. interior or exterior 2 x 4 wood stud walls


JM Model #
Item Description
UPCA/Barcode
R Value
Dimensions
Sq. Ft. Per Bag
Best For...




U1373
R-38 Unfaced Batts
031979133581
38
12" D x 24" W x 48" L
72.00
ceilings and attics in West Coast where codes require empty space


JM Model #
Item Description
UPCA/Barcode
R Value
Dimensions
Sq. Ft. Per Bag
Best For...




U1374
R-38 Unfaced Batts
031979133574
38
12" D x 16" W x 48" L
48.00
ceilings and attics in West Coast where codes require empty space


JM Model #
Item Description
UPCA/Barcode
R Value
Dimensions
Sq. Ft. Per Bag
Best For...


U366
R-38 Unfaced Batts
031979110469
38
13" D x 24" W x 48" L
64.00
ceilings and attics


* Prior to installing any product, you should check with your local building codes

 

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