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2. Radiant barrier - Wikipedia

   en.wikipedia.org/wiki/Radiant_barrier

   The radiant barrier should be installed in a manner to minimize dust accumulation on the reflective surface. Radiant barriers are more effective in hot climates than in cooler/cold climates (especially when cooling air ducts are located in the attic). When the sun heats a roof, it's primarily the sun's radiant energy that makes the roof hot ...

3. Building insulation material - Wikipedia

   en.wikipedia.org/wiki/Building_insulation_material

   Radiant barriers will reflect radiant energy. A radiant barrier by itself will not affect heat conducted through the material by direct contact or heat transferred by moist air rising or convection. For this reason, trying to associate R-values with radiant barriers is difficult and inappropriate. The R-value test measures heat transfer through ...

4. Rigid panel - Wikipedia

   en.wikipedia.org/wiki/Rigid_panel

   It reduces heat conduction through the wall frame when used as sheathing. Rigid panels with a radiant heat barrier facing foil will significantly improve the insulating properties by reflecting infrared solar energy before penetrating the wall or ceiling. Some types use some recycled content.

5. Oriented strand board - Wikipedia

   en.wikipedia.org/wiki/Oriented_strand_board

   The most common uses are as sheathing in walls, flooring, and roof decking. For exterior wall applications, panels are available with a radiant-barrier layer laminated to one side; this eases installation and increases energy performance of the building envelope. OSB is also used in furniture production.

6. R-value (insulation) - Wikipedia

   en.wikipedia.org/wiki/R-value_(insulation)

   Installed faced fiberglass batt insulation with its R-value visible (R-21) [1]. The R-value (in K⋅m 2 /W) is a measure of how well a two-dimensional barrier, such as a layer of insulation, a window or a complete wall or ceiling, resists the conductive [2] flow of heat, in the context of construction. [3]

7. A Cold War-era bomb shelter in Florida has new owners. What's ...

   www.aol.com/cold-war-era-bomb-shelter-100924902.html

   The one-story, nearly-8,000-square-foot fortification is bulwarked by concrete walls 30 inches thick. The two exterior entrances have armored steel blast doors — one paired with a radiation ...