Insulation requirements www tenancy govt nz 0800 tenancy 0800 836 262.
Ceiling insulation r value nz.
All insulation must be in reasonable condition.
The r value of carpets or floor coverings must not be included in calculation of floor r value for heated floors.
The building code outlines minimum r values which depend on what part.
The new zealand building code specifies minimum r values for ceiling insulation in different regions reflecting the climate.
If there s more than one layer of insulation their product r values may be combined.
Rest of the north island.
R value measures how well certain building insulation materials can resist heat.
Minimum r values for zone 3.
Warm up new zealand.
You need to install an insulation product with an r value between 2 2 and 2 8.
When determining how much insulation you need don t guesstimate calculate.
The higher the r value the better the insulation is at reducing heat flow.
The higher the r value the greater the insulation performance.
The r value is a measure of the insulation s effectiveness the higher the r value the better the insulation will perform.
Minimum r values for zones 1 and 2.
For heated walls or ceilings higher r values are required walls r 2 6 ceilings r 3 5.
Tiny air particles trapped in insulation resist the transfer of heat and cold.
Availability is through regional projects.
This means for example that pink batts ultra r4 0 insulation is more effective than pink batts classic r1 8.
Higher r value better insulation.
Insulation that doesn t meet the regulations must be topped up or replaced.
These r values are a sum meaning this should be the total r value once you add up the entire depth of insulation.
The branz house insulation guide provides construction r values for common construction types.
Building code requirements for house insulation previous r values for common construction types next.
For example if you have a type of insulation that has an r value of r 5 per inch of thickness you will need a depth of 6 inches of this insulation installed your attic to reach r 30 if you live in zones 2 or 3.
The thermal effectiveness of insulation is measured by its thermal resistance or r value.
In an uninsulated house more heat is lost through the ceiling and roof than any other part of the house making the roof the top priority for insulation.
Know exactly how much you need with our project calculators.
Why is a higher r value better.