Warm up new zealand.
Ceiling insulation r value nz.
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.
This means for example that pink batts ultra r4 0 insulation is more effective than pink batts classic r1 8.
Building code requirements for house insulation previous r values for common construction types next.
Pitched timber framed roof r 3 3.
Why is a higher r value better.
Minimum r values for zone 3.
Availability is through regional projects.
The new zealand building code specifies minimum r values for ceiling insulation in different regions reflecting the climate.
The branz house insulation guide provides construction r values for common construction types.
The higher the r value the better the insulation is at reducing heat flow.
R value measures how well certain building insulation materials can resist heat.
The thermal effectiveness of insulation is measured by its thermal resistance or r value.
The higher the r value the greater the insulation performance.
Rest of the north island.
The r value of carpets or floor coverings must not be included in calculation of floor r value for heated floors.
All insulation must be in reasonable condition.
If there s more than one layer of insulation their product r values may be combined.
Insulation that doesn t meet the regulations must be topped up or replaced.
Higher r value better insulation.
Know exactly how much you need with our project calculators.
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.
Insulation requirements www tenancy govt nz 0800 tenancy 0800 836 262.
Tiny air particles trapped in insulation resist the transfer of heat and cold.
These r values are a sum meaning this should be the total r value once you add up the entire depth of insulation.
You need to install an insulation product with an r value between 2 2 and 2 8.
Healthy homes projects provide free ceiling and underfloor insulation for low income households occupied by people with health needs related to cold damp housing.
Minimum r values for zones 1 and 2.
When determining how much insulation you need don t guesstimate calculate.
The building code outlines minimum r values which depend on what part.
