Gutter Guard Mesh for High-Intensity Rain: Preventing Sheet-Flow Overshoot
When the rain hits hard, roof water can behave like a slick, fast-moving river. If that flow rockets off the roof edge, it can shoot straight past your gutter — a headache known as sheet-flow overshoot. The right Gutter Guard mesh , installed properly and paired with compliant overflow measures, can keep that water where it belongs: in your gutters, not cascading over your fascia or front step. 🌧️ Gutter Guard Mesh First things first: what causes overshoot? In heavy, short-burst downpours, water speeds up on smooth roof surfaces and at steeper roof pitches. At the eave, momentum can carry the flow past the front bead before it has a chance to “turn the corner” into the gutter. Add debris or a choked downpipe and you’ve got a waterfall. Trade guidance in Australia highlights the familiar culprits: high runoff velocity, poor gutter sizing/pitch, debris, and concentrated flows at valleys — all of which can push water over the front. What the Australian rules expect in heavy ...