Johns Manville - Johns Manville ComfortTherm® Rolls Product Demo

Johns Manville ComfortTherm® Rolls Intro

See Flash demo for product images and multimedia.


Johns Manville ComfortTherm® Rolls Features

  • View 1

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

    • Plastic Wrapping:

      Wrapped in plastic to reduce itch and dust during installation

    • 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 where vapor control is required

      Also available with non-vapor retarder facing

    • 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 ComfortTherm® Rolls Gallery

See Flash demo for product images and multimedia.


Johns Manville ComfortTherm® 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.

      ComfortTherm® is poly-encapsulated, or wrapped in plastic, for a more comfortable installation with less itch and dust. The plastic facing also serves as a vapor retarder. Note: In colder climates, vapor retarders (whether attached to the insulation or applied separately) are often placed toward the heated or conditioned side of the wall. This is done to reduce water vapor penetration into the wall from the building interior. The plastic facing of standard ComfortTherm is a vapor retarder. In predominantly hot, humid climates, many codes make vapor-retarder use optional. ComfortTherm with a non-vapor-retarder facing is available for these areas. Check your local building code for vapor-retarder requirements.

  • Specification 3

    • 1.  Open the packages by cutting lengthwise through the side panel. Be careful to avoid cutting the product or facing. 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.  With faced insulation make sure the vapor retarder is facing the conditioned interior space, unless building codes specify otherwise.

  • Specification 4

    • 6.  Allow friction to hold the insulation in place. Or you can staple the flanges of faced insulation to the insides or face of the joists. (Stapling on the inside is preferred by many drywallers because it leaves the edges of the framing members easier to locate. However, your local building codes may require you to overlap the flanges and staple them to the edges of the framing members.)
      7.  Take care not to stretch the facing too tight as you staple, which can over compress the insulation, and avoid gaps and puckers.

      8.  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.

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


Easy2 Technologies