Sometimes pitch is also expressed in fraction form using a fraction with a slash such as 6 12.
													
																	Roof pitch 12 8. 
								
	
		
	
																	Finding the pitch of a roof can be done by. 
																	8 12 roof pitch angle 33 69 degrees. 
																	If a roof rises 8 in a length of 12 this is 8 12 roof pitch. 
																	Roof pitch degree table. 
															
													
								
	
		
	
																	This means if a roof rises 4 in the length of 12 your roof pitch would be 4 12 or 18 43 degrees. 
																	8 12 roof pitch equivalents roof rises 8 in a length of 12. 
																	Image 1 12 to 12 12 roof pitch 7 12 pitch. 
																	Pitch is thus the ratio of the rise in inches to a 12 inch run and is often expressed using a semicolon for example 6 12. 
															
													
								
	
		
	
																	We included a roof pitch chart below the 7 12 example image and the calculator below that. 
																	If this isn t practical then perform the same measurement on the underside of the roof. 
																	A roof with a 6 rise for every 12 run has a 6 per foot or 6 in 12 pitch.