| Download | - View final version: Températures extrêmes à la surface extérieure des bâtiments (PDF, 1.7 MiB)
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| DOI | Resolve DOI: https://doi.org/10.4224/40001131 |
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| Author | Search for: Stephenson, D. G.1 |
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| Affiliation | - National Research Council of Canada
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| Format | Text, Issue |
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| Physical description | 6 p. |
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| Subject | Building envelope; roofing; surface temperature; walls; roofs; solar radiation; colour |
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| Abstract | The maximum temperature of the outer surface of any building depends mainly on its colour and orientation. The colour and proximity of neighbouring surfaces also have a significant effect on surface temperature. Analysis has shown that dark roof surfaces may reach temperatures of the order of 230 degrees F in summer and fall a few degrees below the minimum air temperature in winter. It is important, therefore, to be sure that any proposed roofing system with a dark surface can operate satisfactorily at temperatures varying between -50 and 230 degrees F. If a light coloured surface is used to reduce the maximum temperature it is important to be sure that the surface will retain a low value of short-wave absorptivity over its entire service life. The maximum temperature for a wall surface is between 140 and 190 degrees F, depending on colour and proximity to reflecting surfaces. If external shading devices are used they should have a dark surface that will absorb the radiation incident on them rather than reflect it onto adjacent wall or window surfaces. It is important, however, not to darken the colour of an outer surface until it has been established that its new shade will not cause the temperature of the wall materials to exceed their allowable values. |
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| Publication date | 1966-08 |
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| Publisher | Conseil national de recherches du Canada. Division des recherches en construction |
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| Series | |
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| Translation of | |
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| Language | French |
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| Peer reviewed | No |
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| NRC number | NRC-IRC-1787 |
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| NPARC number | 20327717 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 0583137b-46d5-48c6-a12a-30891b1255c9 |
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| Record created | 2012-07-18 |
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| Record modified | 2023-12-19 |
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