Zone 1 Zone 2 Zone 3
Roof R-2.9 R-2.9 R-3.3
Wall R-1.9 R-1.9 R-2.0
Floor R-1.3 R-1.3 R-1.3
Glazing (vertical) R-0.26 R-0.26 R-0.26
Glazing (skylights) R-0.26 R-0.26 R-0.31

these are the minimum standards in NZ for 3 different climate regions.
copieed from wiki.

Around most of the world, R-values are given in SI units, typically square-metre kelvins per watt or m²·K/W (or equivalently to m²·°C/W). In the United States customary units, R-values are given in units of ft²·°F·h/Btu. It is particularly easy to confuse SI and US R-values, because R-values both in the US and elsewhere are often cited without their units, e.g. R-3.5. Usually, however, the correct units can be inferred from the context and from the magnitudes of the values. United States R-values are approximately six times SI R-values [2].