The components of a roof truss 1 wall plate bearing 2 tye beam bottom chord 3 rafter top chord 4 webs 5 purlins battens 6 apex 7 cantilever 8 clear span 9 heel 10 joints 11 nail plate 12 overhang.
													
																	Residential names of roof trusses. 
									
	
		
	
																	The raised heel roof truss reduces condensation problems since the truss creates a vapor barrier and is commonly seen in humid climates where mold is a common issue. 
																	This truss requires a soffit siding and additional insulation work from the onset which elevates construction costs. 
																	Most standard residential trusses can achieve r values r value referring to a rating that represents the insulation s capacity to resist heat transference from heated to non heated areas and vice versa of 11 or 13 near the sidewall. 
																	A variety of the trusses shown above fit into the common or gable truss category including the king. 
															
													
									
	
		
	
																	Energy trusses have raised heels so they can reach r values of 30 or higher. 
																	This particular truss is made out of wood most of the time but it can also be built out of a combination of steel and wood. 
																	Studio two bearing points truss.