Bathroom fan vent code requirements include no venting to attic areas to help reduce mold or structural problems.
													
																	Bathroom exaust into attic. 
									
	
		
	
																	When venting a bathroom exhaust fan make sure to vent the air to the outside rather than into your attic where it can cause mold and mildew to form. 
																	So can you vent a bathroom exhaust fan into the attic. 
																	It may also violate a shingle warranty. 
																	Bathroom exhaust fans perform an important function by removing excess moisture from your home. 
															
													
									
	
		
	
																	Your attic is not a temperature controlled environment is never the same temperature as your living space and generally closer to the temperature outside. 
																	Bathroom ventilation codes require a bathroom exhaust fan to vent to the exterior not the attic for health and structural reasons.