BCA Thermal Requirements (R-Value)
Floors
Suspended floors which form part of the Building envelope, including a floor above or below a car park or plant room, must achieve the total R-Value specified in the table below.
BCA 2011 Table J1.6
Roof and Ceilings
A suspended slab that forms part of a roof, or ceiling, must comply with the insulation requirements of Table J1.3 (refer BCA)
BCA 2011 Table J1.3a & J1.3b
Achieving the Required R-Value
In most instances one, or all, of the following components (additional to the concrete slab) will need to be included in the Floor or Roof/Ceiling "Thermal System" in order to achieve the required minimum R-Value.
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Air Film
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Air Gap (space/void)
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Insulation
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Floor Covering
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Ceiling Material
The following table has been reproduced from the National Precaster (NPCAA) and shows the total R-Value for a typical Ultrafloor Thermal System (floor).
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Typical Ultrafloor Slab - Floor Assembly
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Typical Ultrafloor Thermal Systems
FLOOR
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ROOF / CEILING
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Coming Soon
Thermal Calculator
The ULTRAthermal software is free to download and enables you to easily check the total R-Value for any Ultrafloor slab system.
Program features include:
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Full beam range selection
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Adjustable infill size and type
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Variable concrete topping depth
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Multiple ceiling types
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Multiple insulation types
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Multiple floor coverings
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Printable system details
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Printable thermal certification
For Thermal design assistance please call 1800 858 723 or email info@ultrafloor.com.