Barometric pressure causes a vacuum effect allowing rain, moisture and mist particles to penetrate the panel joints and become trapped behind the sheeting forming rust cancer.

Solution: Sunward's Siphon Groove channels and releases the mist and moisture out the ends of the sheeting, protecting the building from rust cancer which will deteriorate the building from the inside out.

Our Siphon Groove will also protect the screw threads from rusting out and will extend the screw's mfg.warranty on upgraded fasteners.