Install the corner posts that came with your metal siding first.
													
																	How to install j channel for steel siding. 
									
	
		
	
																	J channel is an accessory to the siding that s used to. 
																	Notch the j channel on both ends. 
																	At an interior corner the siding. 
																	How to install vinyl siding with a j channel prepare. 
															
													
									
	
		
	
																	Applying the j channel 1. 
																	Installed first and the j channel should be cut 1 wider than the window sill. 
																	The notched flaps will be folded up against the sides of the windows. 
																	Nail j channel along the bottom of the wall you re working on. 
															
													
									
	
		
	
																	The side j channel is installed next and should be cut. 
																	Nail the j trim horizontally along both sides of any interior corners. 
																	Use corrosion resistant galvanized stainless steel or aluminum roofing type nails with a head diameter of. 
																	The corner posts are the pieces of siding that will. 
															
													
									
	
		
	
																	The metal siding will slide into the j trim so. 
																	How to install j trim on steel buildings. 
																	Attach the j trim along the line that will form the upper edge of the metal siding.