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  • I'm trying to find a way of creating a 'drip lip' on the underside edge of a flat painted aluminium window lintel, to prevent rainwater from sticking to it, running around the underside and causing problems with the window frame. It's not possible to physically modify the window lintel.

    My initial thought was applying a strip of some kind of 'hydrophobic tape'; Google isn't coming with the goods as well as expected.

    Does such a 'hydrophobic tape' exist? If not, any other solutions?

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