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