The undercoat acts as a preparatory coating on the guttering surface increasing the stickiness and durability.
													
																	How to paint gutters with a brush. 
									
	
		
	
																	You can also apply a thin layer of top coat with a paint sprayer if you d prefer. 
																	For more see how to clean the outside of gutters. 
																	Apply primer after cleaning your gutters and leaving them dry for an entire day you can start applying a coat of primer. 
																	Apply a thin layer of top coat with a paintbrush or a sprayer. 
															
													
									
	
		
	
																	If the gutters are not clean before you paint them the paint will not stick. 
																	Use a small amount of top coat on the paintbrush so it spreads thinly on the gutters. 
																	Correct any runs in the paint using the brush.