Energy Efficient Cool Roof

Cool Roofs

A cool roof reflects and emits the sun’s heat back to the sky instead of transferring it to the building below. This helps keep your roof cooler and reduces your cooling load and air conditioning needs.

Cool Facts about Cool Roofs

  • Reduce heat island effects in cities and suburbs
  • Help reduce air pollution and smog
  • May lengthen the lifetime of your roof
  • Save on electricity bills during the hot months by reducing AC load

Flat Roof

Flat roofs generally have a small degree of pitch to them so that water will run off to a drain system and not pond. Thus “flat” roofs are low slope roofs.

Heat Island

Heat island refers to urban air and surface temperatures that are higher than nearby rural areas. Many U.S. cities and suburbs have air temperatures up to 10°F (5.6°C) warmer than the surrounding natural land cover.

Low Slope Roof

A “low-slope roof” is a roof surface with a maximum slope of 2 inches “rise” for 12 inches “run” as defined in American Society for Testing and Materials Standard E 1918-97.

Steep Slope Roof

Steep-slope roofs, or sloped roofs, are roof surfaces with a slope greater than 2 inches “rise” for 12 inches “run.”

Solar Reflectance

Solar reflectance is a measure of the ability of a surface material to reflect sunlight – including the visible, infrared, and ultraviolet wavelengths – on a scale of 0 to 1. Solar reflectance is also called “albedo.”

Swamp Cooler

Swamp coolers (also called evaporative coolers, air coolers, or desert coolers) are a type of refrigeration system which uses simple evaporation as the cooling mechanism. This differs from traditional air conditioning, which uses a phase change heat pump with a compressor. Evaporative cooling is especially well suited for climates where the air is hot and humidity is low. In such areas, the installation and operating cost of a swamp cooler can be much lower than traditional air conditioning.

In higher humidity areas, there are many proven cost-effective uses for evaporative cooling that make it the preferred choice. For example, industrial plants, commercial kitchens, laundries, dry cleaners, greenhouses, spot cooling (loading docks, warehouses, factories, construction sites, athletic events, workshops, garages, and kennels) and confinement farming (poultry ranches, hog, and dairy).

Thermal Emittance

The Thermal Emittance of a material refers to its ability to release absorbed heat. Scientists use a number between 0 and 1, or 0% and 100%, to express Emittance. With the exception of metals, most construction materials have emittance above 0.80.

Urban Heat Island

An urban heat island (UHI) is a metropolitan area which is significantly warmer than its surroundings. As population centers grow in size from village to town to city, they tend to have a corresponding increase in average temperature, which is more often welcome in winter months than in summertime. The EPA says: “On hot summer days, urban air can be 2-10°F [2-6°C] hotter than the surrounding countryside. Not to be confused with global warming, scientists call this phenomenon the ‘urban heat island effect”.

Ray’s Roofing Company will put together a Cool Roof solution that pays for itself and saves you money for years to come.

Contact us today: (800) 695.9509