Natural cohesion forces of a water molecule cause it to attract to whatever is next to it - above, beside, or below. As it begins to rain, water searches out and adheres to surfaces it comes in contact with. Keep in mind those same adhesive water traits also hold on to leafs and debris being washed down the roof. The adhesion bond to debris needs to be broken or some debris will follow the water right into the gutter. To solve this problem, RAINDROP designed it's surface in a vertical manner and NOT horizontally. The vertically alligned convex surface of the bars redirects the water to the left or right and creates an initial breaking of the debris adhesion. Therefore large debris is left on the top of the guard to simply fall or blow away.

As water travels around the sides of the vertical bars it enters the apertures. The RAINDROP openings are precisely measured for optimal performance. To small of an opening, and the water cannot get into the gutter...to large an opening and to much debris becomes ensnarled. With RAINDROP, water from two neighboring bars would touch and water cohesion would develop. This water cohesion in turn creates water surface tension to develop between the bars. In this created concave meniscus area, debris is again held on top of the RAINDROP Gutter Guard and successfully kept out of the gutter.

As water continues to enter the guard, surface water molecules hold on to each other with greater forces then those inside the volume of water. The inside water molecules move around more freely...gravity and surface adhesion moves the water downward to the underside of the guard. There the tapered bars again direct water left and right, finally to the tips where the surface is minimized and surface adhesion is broken, water simply fall into the gutter. The process is sucessfully complete. As rain continues to fall, the RAINDROP process has created a capillary action which accelerates the water flow. Heavy rains are not a problem, when tested to U.S. record rainfalls, only one third of the available surface capacity of RAINDROP Gutter Guards was utilized.

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