Climate Zone |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
Ceiling insulation for homes with very light coloured roofs |
R4.1 |
R4.1 |
R4.1 |
R4.1 |
R4.1 |
R4.1 |
R4.1 |
R6.3 |
Ceiling insulation for homes with light coloured roofs |
R4.6 |
R4.6 |
R4.6 |
R4.6 |
R4.6 |
R4.6 |
R4.6 |
R6.3 |
Ceiling insulation for homes with dark coloured roofs |
R5.1 |
R5.1 |
R5.1 |
R5.1 |
R5.1 |
R5.1 |
R5.1 |
R6.3 |
Wall insulation |
R2.8 |
R2.8 |
R2.8 |
R2.8 |
R2.8 |
R2.8 |
R2.8 |
R3.8 |
Underfloor insulation |
R1.5 |
R1.0 |
R2.25 |
R1.0 |
R2.25 |
R2.25 |
R2.75 |
R3.25 |
R4.1 is about 20 cm thick (depending on the material and its density).
When checking the R-value of a certain insulate type, find its effective or installed R-value. Due to various building and external conditions, this may differ from its labelled R-value.