I d do two layers of 30lb tar the nails tell them it will need replacement in 5 7years and call it a day.
													
																	1 12 roof options. 
									
	
		
	
																	What is a 1 12 roof pitch if a roof rises 1 in a length of 12 this is 1 12 roof pitch. 
																	This is for the top level of a 3 story building that is 26 by 64. 
																	1 12 roof pitch angle 4 76 degrees. 
																	Examples of extreme slopes range from 1 4 12 almost flat to 12 12 sloping down at a perfect 45 degree angle. 
															
													
									
	
		
	
																	Most snap together metal roofs require a 3 12 or 4 12 pitch to work properly and keep water from entering the home but a metal roof that is professionally seamed on site can be used down to a 1 12 pitch. 
																	Saved by wan zainuddin 1. 
																	Long lasting and old fashioned metal roofing is an excellent design choice if most of your house has steeper roof. 
																	A very low pitch roof can also be done in metal. 
															
													
									
	
		
	
																	At 1 12 pitch you are right at the threshold where standing seam becomes impermissible i mean true standing seam with a rolled lock seam and soldered flat seams must be. 
																	For most home styles roof pitches fall in a range 4 12 a moderate slope up to 8 12 fairly steep. 
																	In fact a properly installed metal roof can be used on roofs as shallow as 1 2 inch 12 inches which is almost flat. 
																	I would just explain that any 1 12 roof w o torch down or membrane may leak. 
															
													
									
	
		
	
																	The ibhs recommends a 4 to 6 pitch roof.