Frame the rough opening to a height that is 1 5 taller than the door that you have selected.
													
																	How to frame wide garage with doors at eaves. 
									
	
		
	
																	Frame the rough opening for the garage door to 3 inches wider than the garage door you have selected. 
																	Frame the rough opening to 3 inches wider than the garage door size you have selected. 
																	Shedding rainwater away from siding and trim especially from door and window sills can greatly reduce rot mildew and a host of other problems that can be caused by water streaming down the face of the building. 
																	Cut a piece of trim to that measurement. 
															
													
									
	
		
	
																	If you are installing a 9 wide door the opening will be 9 3 wide. 
																	Eaves and rakes that overhang a building s sidewalls are critical to the life of a building. 
																	Header the header is ideally a minimum 12 wide micro laminated beam that spans the width of the garage door opening. 
																	How to frame a garage doors opening in this case 9ft wide by 8ft tall. 
															
													
									
	
		
	
																	Measure the distance from the bottom plate of the wall to a point that is 1 1 2 inches higher that the garage door height. 
																	Header requirement 2 at minimum the header should be 12 wide with doubled 2 4 at opening and ceiling running the width of the door with a 2 4 in the center of the opening for the center bracket to attach to.