R value measures how well certain building insulation materials can resist heat.
													
																	Recommended r value for attic. 
									
	
		
	
																	When determining how much insulation you need don t guesstimate calculate. 
																	The higher the r value the better the thermal performance of the insulation. 
																	The province the city and the area greatly influence the difference in r value for the insulation of an attic. 
																	R value is a measure of insulation s ability to resist heat traveling through it. 
															
													
									
	
		
	
																	Recommended home insulation r values. 
																	Blown in cellulose insulation can carry an r value of 3 2 3 8 per inch of thickness. 
																	Know exactly how much you need with our project calculators. 
																	R value is a measure of insulation s ability to resist heat flow. 
															
													
									
	
		
	
																	You will need a higher r value of insulation if you live in the northeast than if you live in southern california. 
																	Where you live different climates require different insulation r values. 
																	The higher the r value the better the thermal performance of the insulation. 
																	To give you a quick example if you blow in 18 of insulation into your attic with an r value of 3 0 per inch you ve got an effective r value of 3 x 18 54. 
															
													
									
	
		
	
																	Insulation level are specified by r value. 
																	The recommended level for most attics is to insulate to r 38 or about 10 to 14 inches depending on insulation type. 
																	Recommended r value for attic insulation canada the recommended r value for insulation of attics in canada depends on the area as it is a value that changes a lot from area to area.