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2. R-value (insulation) - Wikipedia

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

   For similar reasons, the R-value per inch also depends on the temperature of the material, usually increasing with decreasing temperature (polyisocyanurate again being an exception); a nominally R-13 fiberglass batt may be R-14 at −12 °C (10 °F) and R-12 at 43 °C (109 °F). [20]

3. Polyisocyanurate - Wikipedia

   en.wikipedia.org/wiki/Polyisocyanurate

   The generalised chemical structure of polyisocyanurate showing the isocyanurate group. The polyols are abbreviated as R-groups.. Polyisocyanurate (/ ˌ p ɒ l ɪ ˌ aɪ s oʊ s aɪ ˈ æ nj ʊər eɪ t /), also referred to as PIR, polyol, or ISO, is a thermoset plastic [1] typically produced as a foam and used as rigid thermal insulation.

4. Building insulation material - Wikipedia

   en.wikipedia.org/wiki/Building_insulation_material

   Closed-cell foams are superior insulators. While open-cell foams typically have R-values of 3 to 4 per inch (RSI-0.53 to RSI-0.70 per inch), closed-cell foams can attain R-values of 5 to 8 per inch (RSI-0.88 to RSI-1.41 per inch). This is important if space is limited, because it allows a thinner layer of insulation to be used.

5. List of insulation materials - Wikipedia

   en.wikipedia.org/wiki/List_of_insulation_materials

   Typical R-values are given for various materials and structures as approximations based on the average of available figures and are sorted by lowest value. R-value at 1 m gives R-values normalised to a 1 metre (3 ft 3 in) thickness and sorts by median value of the range.

6. Spray foam - Wikipedia

   en.wikipedia.org/wiki/Spray_foam

   As a result of the high thermal resistance of the gas, spray polyurethane insulation typically has an initial R-value around R-3.4 to R-6.7 per inch. [6] In comparison, glass wool typically has an R-Value of only R-3 to R-4 per inch. [7] Foam insulation blocks all three forms of heat transfer: Conductive heat transfer

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8. Rigid panel - Wikipedia

   en.wikipedia.org/wiki/Rigid_panel

   Polyisocyanurate (also known as polyiso). More stable at high temperatures and less flammable than polyurethane. Higher R-value vs. polystyrene and polyurethane due to its gas-filled closed-cell foam structure. Denser and more rigid than polystyrene panels, but more expensive. Must protect from prolonged exposure to water.

9. William R. Loomis Jr. - Pay Pals - The Huffington Post

   data.huffingtonpost.com/paypals/william-r-loomis-jr

   The William R. Loomis Jr. Stock Index From April 2012 to December 2012, if you bought shares in companies when William R. Loomis Jr. joined the board, and sold them when he left, you would have a 56.2 percent return on your investment, compared to a 2.8 percent return from the S&P 500.