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  2. Building insulation material - Wikipedia

    en.wikipedia.org/wiki/Building_insulation_material

    Insulation is a barrier material to resist/reduce substance (water, vapor, etc. ) /energy (sound, heat, electric, etc.) to transfer from one side to another. Heat/ Thermal Insulation is a barrier material to resist / block / reflect the heat energy (either one or more of the Conduction, Convection or Radiation) to transfer from one side to another.

  3. Superinsulation - Wikipedia

    en.wikipedia.org/wiki/Superinsulation

    Another approach is to use the 1/3 to 2/3 method mentioned above—to install a vapor retarder on the inside of the existing wall (if there is not one already) and add insulation and support structure to the interior. This way, utilities (power, telephone, cable, and plumbing) can be added to the new wall space without penetrating the air barrier.

  4. Building insulation - Wikipedia

    en.wikipedia.org/wiki/Building_insulation

    If the renovation is of a smaller nature, the renovation directive applies. Examples of renovation are post-insulation of a cavity wall and post-insulation of a sloping roof against the roof boarding or under the tiles. Note that every renovation must meet the minimum Rc value of 1.3 W/(m 2 ⋅K). If the current insulation has a higher ...

  5. Housewrap - Wikipedia

    en.wikipedia.org/wiki/Housewrap

    Housewrap functions as a weather-resistant barrier, preventing rain or other forms of moisture from getting into the wall assembly while allowing water vapor to pass to the exterior. If moisture from either direction is allowed to build up within stud or cavity walls, mold and rot can set in and fiberglass or cellulose insulation will lose its ...

  6. Spray foam - Wikipedia

    en.wikipedia.org/wiki/Spray_foam

    Foam insulation serves as a barrier to airborne sounds, and reduces airborne sound transfer through a building's roof, floor and walls compared an uninsulated structure. [15] In the United States, homes treated with spray foam insulation often qualify for state and federal tax deductions. [16] Insulation of all types stops a good deal of energy ...

  7. Thermal insulation - Wikipedia

    en.wikipedia.org/wiki/Thermal_insulation

    Thermal insulation is the reduction of heat transfer (i.e., the transfer of thermal energy between objects of differing temperature) between objects in thermal contact or in range of radiative influence. Thermal insulation can be achieved with specially engineered methods or processes, as well as with suitable object shapes and materials.

  8. External wall insulation - Wikipedia

    en.wikipedia.org/wiki/External_wall_insulation

    Types of External cromatic wall insulation systems (EWI Systems pictured above) External wall insulation systems generally comprise firstly an insulation layer (an element which helps to achieve the requisite thermal performance); and secondly,a protected weatherproof finish (usually a render, although brick slips, [3] tiles, and decorative boards can also be used).

  9. Cellulose insulation - Wikipedia

    en.wikipedia.org/wiki/Cellulose_insulation

    While in 1976 there were roughly 100 cellulose insulation firms with 125 plants in the US, by 1978 there were more than 350 firms with more than 500 plants 1. Cellulose insulation was produced locally by small manufacturers who purchased ready-to-operate machines and offered a cheap and easy low-tech production process.

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