There are no vertical openings for leaves and debris to enter, and no screens to clog. Rainwater flows over and around the nose of the Ever Clean Gutter System and migrates downward into your gutters by the simple physical law of water surface tension.
TRY THIS SCIENCE EXPERIMENT: Try pouring milk from one glass to another without spilling it or leaking it onto your countertop. Does the milk stick to the glass being poured from? That is called the Coandă effect, which explains why water sometimes sticks to the glass when pouring. It’s caused by the liquid’s attraction to the container’s surface.
IT’S CALLED SURFACE TENSION: Liquids can leak from the side when pouring due to a combination of surface tension, the angle of the pour, and the shape of the container. Surface tension causes liquids to cling to surfaces, and if the pouring angle is shallow or the liquid is moving slowly, it can stick to the side of the glass instead of flowing cleanly out. The design of the container’s lip also plays a role, with sharp edges promoting cleaner pours than rounded ones.
WHAT DOES THIS HAVE TO DO WITH GUTTERS? Ever Clean Gutter System is designed to work in harmony with that surface tension with our large curved hoods to encourage the water to hug the hood and be deposited fully into the gutter rather than run over the gutter (as our competitors’ systems) which will cause damage to your foundation and your home.
How surface tension applies to gutters
When rainwater flows off your roof, it doesn’t just fall straight down—it follows surfaces because of surface tension. This is critical in gutter design:
- Water “grabs” onto the roof edge and wants to continue along a path
- If designed correctly, it will follow into the gutter opening
- If poorly designed (like with many covers), water can overshoot or spill over
How Ever Clean gutters use surface tension to their advantage
Ever Clean systems are designed to work with water—not against it:
- 1. Open flow design (no screens to disrupt flow)
Instead of forcing water through mesh or filters, Ever Clean allows water to naturally follow its path into a wide, open gutter channel. - 2. Proper pitch and angle
Their system is engineered so surface tension helps pull water into the gutter, rather than letting it roll past or overshoot. - 3. High-volume handling
During heavy rain (when surface tension is even more noticeable), Ever Clean’s design ensures water continues to cling and flow smoothly—reducing overflow risk. - 4. Debris separation advantage
While water follows the gutter path, larger debris (like leaves or pine needles) does not benefit from surface tension—so it’s more likely to be carried away or not enter the system at all.
Why this matters (and where other systems fail)
Many traditional gutter guards try to rely on surface tension (like curved helmet-style covers), but:
- If the flow is too fast → water shoots over the edge
- If debris builds up → surface tension breaks and water spills
- In winter → ice disrupts the flow entirely
Ever Clean avoids these issues by not relying on a narrow edge or small opening, but instead giving water a natural, unobstructed path. It’s just like the way water clings to the side of a glass when poured (try at home in the kitchen sink). The Ever Clean system has more surface tension than anyone in our industry. Why? Ever-Clean offers the largest gutter system hood available, creating more surface tension, designed to handle more rainfall than has ever been recorded in the United States.
