"It’s a familiar problem: basement grilles are constantly exposed to weathering and apart from natural aging, some of them also bear the brunt of vandalism.
After several decades, they are badly in need of polishing, a new coat of paint or the repair and replacement of parts.
In our example, the grille had rusted solid, and the screw fittings could not be budged even after applying plenty of penetrating anti-corrosion spray.
But there is a DIY solution, as we show in our video."