Affordable Aluminium Foil Insulation Melbourne - In Stock Now! Call Us Today 1300 127 227 ! Prices start at just $120.00 per roll, including GST. Solavis Conservation Systems Pty Ltd 168 Northbourne Road, Campbellfield VIC 3061 What is radiant heat? Radiant heat is energy. Radiant heat is heat that is transmitted from a heat source through space. It is the heat we feel from distant objects like the sun or a fire. Radiant heat is also called infra-red heat or infra-red energy. Around 80% of the heat transfer in your building envelope is via radiant heat energy, which heats up your house in summer. Bulk Insulation and R-values? Material R values are determined in a laboratory by placing a product between two fixed temperature plates set at 33 and 13 degrees Celsius (a temperature difference of 23 deg) and measuring the heat transfer that takes place over a four hour period. The heat transfer measured is then presented as the material R-value. The problem is that the quoted R values are only valid for the standardised conditions in which the test took place. If the temperature difference is increased, the R-value decreases. This is the case in real life conditions, where temperatures of up to 50-70 degrees are common in roof spaces during summer. In these sorts of conditions the actual R-value your bulk insulation would be much lower than what is quoted. Also, keep in mind that no matter how high the R-value might be, bulk insulation does not stop any heat flow at all. It ...
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