Box gutters are actually built off of the rafters of the building they are not hung from the building as metal gutters are.
													
																	How to build a gutter system. 
									
	
		
	
																	Project step by step 20 cutting the gutter. 
																	Form strip miter joint at corner cover the joint between two lengths of gutter at each corner with a strip miter a 3 inch wide strip of aluminum. 
																	Secure it with eight pop rivets or sheet metal screws. 
																	It s much easier to join sections on the ground than to work from the top of a ladder. 
															
													
									
	
		
	
																	Snap the sections together. 
																	The water will then flow through any fault in the base of your home until it reaches the inside where it sits and forms mold. 
																	Cut a triangular section from. 
																	Without a gutter system water will simply fall off the roof and likely form pools near the base of your house. 
															
													
									
	
		
	
																	Cut a two inch long notch in the front lip of the gutter with tin snips to join a rain gutter section.