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



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.
Hence a minimum R value of 2.1 or 3.5 is specified by ECBC.
Combination of S.R.I and R value will give the best & everlasting terrace.
Roof Tiles offers solution for R value also (T&C).

Solar Direct Reflectance






Energy Conservation Building Code (section 4.3.1 &
Bureau of Energy Efficiency
(Govt. of India, Ministry of Power)
Note: Cool Roof requirements are mandatory: Additional parameters are optional

Additional Parameters maintained for Roof Tiles Tiles:

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  

Frequently Asked Questions

My house is 6 years old. Terrace is finished with red clay pressed tiles. Now lot of tiles are lifted, eroded, damaged, cracked and joints are open.
Hence severe leakage occurs. I want economical solution to solve my terrace issue.
I attach a photographs for your information.

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