| You can save yourself a lot of work by starting over by purchasing a new shower door. Coat the door with a hard surface coating like Rain X. Then get in the habit of using a shower squeegee to remove the water from the door after every shower use. This will keep the mineral deposit from adhering to the glass. You will only need to put additional coats of Rain X about once a month. Also keep in mind that shower doors are tempered glass. Using a razor/scraper on tempered glass can easily leave nasty scratches. |
Here is a link that might be useful: Hard Water Deposits