Your RV faces all kinds of aggression: sap, leaf, tree branches, sun, rain, snow, and more. Despite the application of increased protection, the dirt is deposited there, especially during rain which falls on the gutter and ends up overflowing on the sides. This is not enough to repel water from the sides; causing black marks and stains. RV Gutter Lip Gutter is a Canadian invention designed to repel, protect your RV from dirt, water infiltration, stain, and black marks. BrilleXperts certified technicians can help you install RV Gutter Lip Gutter Extensions.