ArmourReflect White Coat, Roof Coatings IKO IKO ArmourReflect White Coat is an acrylic-based, breathable elastomeric coating, which provides high solar reflectance index (SRI) values. Available in 18.93 L (5 U.S. gal) pails, this coating may be applied by brush or roller without dilution. IKO ArmourReflect White Coat shows exceptionally good flexibility, protective properties and weatherproofing ability. This product contains a Low VOC elastomeric water-based formulation and is particularly suited for use as a crack-bridging
Solar Reflectance - The Portland Cement Association combinations of concrete constituents meet the solar reflectance index requirements in the. Leadership in The lowest solar reflectances were from concretes composed of dark gray fly ash. The solar reflectance of the cement had more effect on the solar reflectance of the concrete than any other constituent material. The solar reflectance of the supplementary cementitious material solar reflectance index (SRI) is a composite measure that accounts for a surface's solar reflectance
COLORBOND® Coolmax® steel facts - BlueScope Steel As an example samples of COLORBOND® steel in Surfmist®, exposed over a decade at the BlueScope Steel testing facility in Rockhampton QLD, retained 95% of their initial solar reflectance. Reference: Adams JC & Stark GK, The benefits of light coloured steel A cool roof is normally defined as having a high solar reflectance index (SRI) value requiring both a high solar reflectance and thermal emittance. Bare metal roofing cannot achieve high SRI values on account of their low
Cool Roof Solutions Brochure - Johns Manville Source: Illustration is a composite drawing of data obtained from Southern .. under cover (defined as underground, under deck, under roof or under a building); any roof used to shade or cover parking must have an SRI of at least 29. SSc7.2. OPTION 1 – Use roofing materials with a solar reflectance index. (SRI) of 78 for low-sloped roofs and 29 for steep-sloped roofs. . Otherwise, to achieve the appropriate R-value, insulation must be installed directly under the deck, or roof.
Urban Heat Island Reduction, SRI - Concrete Thinker A composite index called the solar reflectance index (SRI) is used by the U.S. Green Building Council and others to estimate how hot a surface will get when exposed to full sun. The temperature of a surface depends on the surface's reflectance and emittance, as well as solar radiation. The solar reflectance index (SRI) is used to determine the effect of the reflectance and emittance on the surface temperature, and varies from 100 for a standard white surface to zero for a standard
White Roof - Building Features The roof consists of a roof board and vapour barrier covering the metal deck. When BURmastic Adhesive is combined with the BURmastic composite Ply, it produces the highest quality, cold applied built-up roof available. gravel surfaces have achieved up to 40 percent reduction of incoming solar radiation, the Rock-It Calcite, which combines excellent reflectivity and emissivity properties, ensured the roof would achieve the required solar reflectance index (SRI) number of 78.
Solar Reflectivity (R) & Solar Reflectance Index (SRI) by Color solar reflectance index (SRI) by Color. solar reflectivity or reflectance is the ability of a material to reflect solar energy from its surface back into the atmosphere. The SR value is a number from 0 to 1.0. A value of 0 indicates that the material absorbs all solar energy and a value of 1.0 indicates total reflectance. Energy Star requires an initial SR value of 0.25 or higher for steep slope (>2:12) roofs and 0.15 or greater after three years. Low slope roofs require an initial SR value of 0.65 or
Reducing Urban Heat Islands: Compendium of Strategies - EPA Understanding how cool roofing works requires knowing how solar energy heats roofing materials and how the proper ties of roofing materials can contribute to warming. This section explains solar energy, the properties of solar reflectance . on deck. Cool colored tiles on battens. Cool roof products can be indistinguishable from their conventional counterparts. The rightmost row of curved tiles uses conventional colored pigments, whereas the other two rows use cool pigments.
TABLE OF CONTENTS - ASC Building Products a composite of conductive properties including existing climatic conditions. This “operating” temperature can be calculated mathematically in accordance with ASTM E 1980, “Standard. Practice for Calculating solar reflectance index of Horizontal and Low-Sloped Opaque. Surfaces”. It can then be stated numerically as a solar Reflective index or SRI. This index will vary from a high of 100 to a low of 0. Materials with a high SRI are the coolest and therefore most desirable for a cool roof
Solar Reflectance Index Measurements - Surface Optics Corp. Building designers and developers that are pursuing the Heat island reduction credit for LEED certification require documentation of the solar reflectance index (SRI) for their project's roofing materials, shade giving structures, and paving materials. Under the U.S. Green Building Council's LEED 2009 rating system, credits SSc7.1 and SSc7.2 (combined as credit SSc5 in LEED v4) are intended to minimize effects on microclimates and human and wildlife habitats by reducing heat
Building on Solar Reflectance: Meeting cool roof standards with 7 Mar 2017 The U.S. Green Building Council (USGBC) Leadership in Energy and Environmental Design (LEED) program uses both reflectance and emittance, as expressed in the solar reflectance index (SRI). The most recent version of LEED (LEED v4) Published in 2005, the research found a tile cool roof “reduced the peak heat transfer penetrating the roof deck at solar noon by about 70 percent” as compared to a typical residential asphalt shingle roof. A similar effect could
What is a "Cool Roof"? CertainTeed A cool roof is a roofing system that delivers higher solar reflectance (the ability to reflect the visible, infrared and ultraviolet wavelengths of the sun, reducing heat transfer to the building) and higher thermal emittance (the ability to radiate absorbed, or non-reflected solar energy) than standard designed roofing products. Historically, cool roofs have been either white or some other lighter shade color. However, that dynamic has changed in recent years with the development of residential
Building on Solar Reflectance: Meeting cool roof standards with Building on solar reflectance: Meeting cool roof standards with concrete and clay tile. March 7, 2017. This cool roof blend of clay tile;; air channel;; underlayment;; roof deck;; radiant barrier (sometimes included, often as a foil layer laminated to the bottom of oriented strand board [OSB] decking); and; insulation. The material properties of clay and The solar reflectance index (SRI) has become the chief quantitative measure used to define cool roof materials. The ability of a roofing