Water moves in a sheet down your roof and across the gutter cover.
How surface tension works gutters.
The surface tension of water along with the force generated by the liquid either falling as rain or flowing as runoff allow it to cling to the gutter cover instead of bouncing off onto the ground.
When you re using surface tension gutter covers you use the power of this tension to your advantage.
Using surface tension the advantage gutter guard is able to be completely solid while still safely delivering rainwater to its rightful place the gutter.
When it comes to the edge of the gutter cover the water molecules cling together and slip smoothly into the gap between the cover and the gutter.
To understand how it works go to the sink and pour yourself a glass of water.
Surface tension is a natural phenomenon where a liquid like water when it comes in contact with the gas acts like a thin elastic sheet.
Furthermore surface tension is correlated with the surface area of whatever it touches.
This is surface tension in action.
The water creates an elastic skin and small objects can float or move across this surface.
The tension then creates a kind of seal that prevents anything apart from other liquids from passing through.
The water from the roof is directed into the gutter and away from the house even in the heaviest downpours.