What R-value and thickness insulation should I buy?

What R-value and thickness insulation should I buy?

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



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