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Applications: New building terraces
| Cool Roof requirements as per ECBC norms: (Reflective tiles or Heat Resistant tiles) (ASTM E 1980-11, EN 673:2011 and EN 410:2011) |
Roof Tiles Value | How much weathering course is required for cool roof? | |||
|---|---|---|---|---|---|
Solar Reflectance Index |
>78 |
96 |
A building receives most of the heat through roof by radiation. Heat moves in and out of your home (or about any other structure) in four ways: by conduction (which R-Value measures), and by convection, radiation (which S.R.I value measures) and air infiltration. |
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Solar Direct Reflectance |
0.70 |
0.77 |
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Emissivity |
0.75 |
0.92 |
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Energy Conservation Building Code (section 4.3.1 & 4.3.1.1) |
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Additional Parameters maintained for Roof Tiles Tiles:
| Sl.No: | PARAMETER | METHOD /STDs | Roof Tiles VALUE | REMARKS |
| 1) | Dimension | - | 300x300x9.0 mm | |
| 2) | Weight per Sq ft | - | 1.25 to 1.30 kg | |
| 5) | Scratch Hardness (Moh's) | IS 13630 (part 13) | >6 (6 to 7 for vitrified tile) | Unique property of Roof Tiles Cool Roof |
| 7) | Accelerated Weathering Test | IS 101 | Passes | No change in color or gloss. No blistering, peeling, flaking or cracking observed. |
| 8) | Salt Spray Test (5% Na Cl) 100 hrs. | IS 13630 (part 8) 2006 | Passes | No change in surface. No blistering, peeling, flaking or cracking observed |
| 9) | Stain Test (methylene blue & potassium permanganate)) | IS 13630 (part 8) 2006 | Passes | Class I. Stain removed by water. |
| 10) | Modulus of Rupture, Kg/Cm2 | IS 13630 (part 6) 2006 | 100 kg/sq cm. | |
| 11) | Water Absorption, % | 24 hours soaking in water | 18 by weight 33 by volume |
More pores: more insulation. Or less conductivity. |
| 12) | Crazing Test | IS 13630 (part 9) | 4 cycle passes |