Johns Manville - Johns Manville Unfaced Rolls Product Demo

Johns Manville Unfaced Rolls Intro

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Johns Manville Unfaced Rolls Features

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    • 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:

      Can be cut to fit any size wall cavity

    • 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


Johns Manville Unfaced Rolls Gallery

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Johns Manville Unfaced Rolls Installation

  • Specification 1

  • Specification 2

    • Roll insulation can be used anywhere in your home, although they are best for covering long unobstructed areas like attics and crawl spaces. Roll insulation can be cut to fit any size cavity. When choosing roll insulation, make sure you use the most appropriate R-value. 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.

  • Specification 3

    • 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.  Rolls must be measured and cut to fit into wall cavities. 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.

      3.  Cut the insulation to fit properly. Don't double it over or compress it. Compression changes the R-value of the insulation.

      4.  Gently push insulation into the cavity so that it sits all the way, 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.

      5.  Allow friction to hold the insulation in place.

      6.  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 roll and 12" - 24" apart.

      7.  When installing rolls in an unfinished attic or other large open area, simply unroll the insulation in place.

      8.  Wherever there are adjacent rolls, make sure they fit snugly together.


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