2/13/24, 11:47 PM Construction R-value Calculator
Construction R-value Calculator
This webpage calculates the R-value of walls, roofs and suspended floors for most insulation material R-values. It uses the "isothermal
planes" method, the same method as used in NZS4214:2006.
Some of the possible material combinations may not be suitable for actual constructions, i.e. EPS based claddings directly fixed on timber
framing. Please make sure to select only appropriate material combinations.
If your construction is not listed, please send an e-mail to designnavigator@gmail.com with a description and a detail drawing (pdf) of it.
Please select the element type. Then choose the construction details and enter the R-value of the insulation either directly in the text box or
by choosing a product from the right panel .
Floors
Walls
Roofs
Date: 13/02/2024
RONIL RESIDENCE 1.40 m²°C/W
Type: Floor: Raft Slab Floor - H1/AS1 Edition 5 and H1/AS2 Edition 1
Raft Slab Floor - H1/AS1 Edition 5 and H1/AS2 Edition 1
Table F Slab Insulation (H1 Edition 5) - H1 Acceptable Solutions and Verification Methods
Slab floor area [m²]: 75
Area Perimeter Ratio: 1.97
Perimeter:
Length* Masonry External Wall Edge
Veneer Wall Thickness* Insulation
- 11 m 90 mm
- 8 m 90 mm
- 11 m 90 mm
- 8 m 90 mm
+
* required data. If empty the perimeter type will be ignored.
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By using this website you agree to the Design Navigator Terms and Conditions
https://www.designnavigator.solutions/CRC.php 1/1
2/13/24, 11:49 PM Construction R-value Calculator
Construction R-value Calculator
This webpage calculates the R-value of walls, roofs and suspended floors for most insulation material R-values. It uses the "isothermal planes"
method, the same method as used in NZS4214:2006.
Some of the possible material combinations may not be suitable for actual constructions, i.e. EPS based claddings directly fixed on timber
framing. Please make sure to select only appropriate material combinations.
If your construction is not listed, please send an e-mail to designnavigator@gmail.com with a description and a detail drawing (pdf) of it.
Please select the element type. Then choose the construction details and enter the R-value of the insulation either directly in the text box or by
choosing a product from the right panel .
Floors
Walls
Roofs
Date: 13/02/2024
RONIL RESIDENCE 0.36 m²°C/W
Type: Roof: Timber framed truss Roof, direct fixed or battened flat Ceiling
Timber framed truss Roof, direct fixed or battened flat Ceiling view detail
external surface 0.03
Roofing : generic - Metal corrugate Iron with building paper
R-value: 0.01
Insulation :
Timber Frame & Cavity :
no framing (for example SIP Panels)
Roof Frame Area: 0.0% Cavity Area: 100.0%
Roof space (still air) 0.11 Roof space (still air) 0.11
Framing : Insulation : 2.9
R-value: 0.00
notched to cover bottom chord
Roof Lining : generic - gypsum Plasterboard 13mm
R-value: 0.06
internal surface 0.09
Non-IC-rated recessed downlights
Ceiling Area [m²]: 74 Number of downlights: 25 Clearance from lamp holder side [m]: 2
Print Page
By using this website you agree to the Design Navigator Terms and Conditions
https://www.designnavigator.solutions/CRC.php 1/1
2/13/24, 11:48 PM Construction R-value Calculator
Construction R-value Calculator
This webpage calculates the R-value of walls, roofs and suspended floors for most insulation material R-values. It uses the
"isothermal planes" method, the same method as used in NZS4214:2006.
Some of the possible material combinations may not be suitable for actual constructions, i.e. EPS based claddings directly
fixed on timber framing. Please make sure to select only appropriate material combinations.
If your construction is not listed, please send an e-mail to designnavigator@gmail.com with a description and a detail drawing
(pdf) of it.
Please select the element type. Then choose the construction details and enter the R-value of the insulation either directly in
the text box or by choosing a product from the right panel .
Floors
Walls
Roofs
Date: 13/02/2024
RONIL RESIDENCE 1.97 m²°C/W
Type: Wall: Timber Frame with vented Cavity
Timber Frame with vented Cavity view detail
external surface 0.03
Cladding : generic - Brick 70mm
R-value: 0.06
Air Barrier : generic - Building paper
R-value: 0.01
Timber Frame & Cavity : 90mm, studs @ 600mm, dwangs @ 800mm
Wall Frame Area: 14.4% Cavity Area: 85.6%
15-90mm vented cavity (all R-values on ext. side of 15-90mm vented cavity (all R-values on ext. side of
cavity will be halved), R: 0.08 cavity will be halved), R: 0.08
Framing : Insulation : 2.1
R-value: 0.75
still Airgap: none
R-value: 0.00
Wall Lining : generic - Brick 70mm
R-value: 0.06
internal surface 0.09
Print Page
By using this website you agree to the Design Navigator Terms and Conditions
https://www.designnavigator.solutions/CRC.php 1/1
