The irc sub chapter r801 3 roof drainage requires in areas where expansive or collapsible soils are known to exist all dwellings shall have a controlled method of water disposal from roofs that will collect and discharge roof drainage to the ground surface at least 5 feet 1524 mm from foundation walls or to an approved drainage system.
													
																	R801 3 roof drainage. 
									
	
		
	
																	Specifically does the irc prescribe gutters as a controlled method of roof drainage when a home is built on a slab on grade foundation. 
																	As in gutters required in areas where expansive or collapsible soils are known to exist all dwellings shall have a controlled method of water disposal from roofs that will collect and discharge roof drainage to the ground surface at least 5 feet 1524 mm from foundation walls or to an approved drainage system. 
																	R801 3 roof drainage in areas where expansive or collapsible soils are known to exist all dwellings shall have a controlled method of water disposal from roofs that will collect and discharge roof drainage to the ground surface not less than 5 feet 1524 mm from foundation walls or to an approved drainage system. 
																	The international residential code addresses roof drainage in section r801 3. 
															
													
									
	
		
	
																	So how about roof drainage. 
																	A close look at the code will answer this important question.