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2. R-value (insulation) - Wikipedia

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

   R. -value (insulation) 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] R-value is the temperature difference per unit of heat flux needed to sustain one unit of ...

3. What to Consider Before You Choose a Roofing Material - AOL

   www.aol.com/consider-choose-roofing-material...

   So, for a typical 2,500-square-foot home with a 4,000-square-foot roof, a good fiberglass roof costs about $32,000 in 2024, and a quality metal roof costs more in the $75,000 range, Miller says ...

4. Domestic roof construction - Wikipedia

   en.wikipedia.org/wiki/Domestic_roof_construction

   Ctrs. means centers, a typical line to which carpenters layout framing. Domestic roof construction is the framing and roof covering which is found on most detached houses in cold and temperate climates. [1] Such roofs are built with mostly timber, take a number of different shapes, and are covered with a variety of materials.

5. These Are the 7 Best Roofing Materials for Your Home - AOL

   www.aol.com/7-best-roofing-materials-home...

   Here are the best types of roofing materials for your home, according to our experts. Top choices include asphalt shingles, clay tiles and metal sheets.

6. Building insulation material - Wikipedia

   en.wikipedia.org/wiki/Building_insulation_material

   The choice of which material or combination of materials is used depends on a wide variety of factors. Glass wool and EPS (expandable polystyrene) were by far the most commonly used building insulation materials in 2022, followed by stone wool and rigid foams made of PUR (polyurethane) and PIR (polyisocyanurate). [1]

7. Roof pitch - Wikipedia

   en.wikipedia.org/wiki/Roof_pitch

   Roof pitch. Roof pitch is the steepness of a roof expressed as a ratio of inch (es) rise per horizontal foot (or their metric equivalent), or as the angle in degrees its surface deviates from the horizontal. A flat roof has a pitch of zero in either instance; all other roofs are pitched. A roof that rises 3 inches per foot, for example, would ...