Moved from here.
What is the difference between a sheet and a cascade? I just had my pool renovated and am experiencing the wall hugging spillover. If I disrupt the 20" wide flow momentarily it will begin to sheet temporarily. The new granite does have a rounded edge. Trying to determine if I should cut the under groove or sharpen the leading edge with my grinder (or both).The leading edge of the waterfall must have a straight or sharp edge to sheet or keep from hugging the wall. If you want a diffused or "rough" cascade, then you would make the leading edge rounded, and cut a groove on the underside to keep the water off the wall (as stated above).
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