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Stoner Invisible Glass with Rain Repellent



Invisible Glass with Rain Repellent cleans and leaves a shield to repel dust and water.
Product review by Terry Freiberg

    Recently the U.S. Government set a 4% VOC (Volatile Organic Compound) limit on all glass cleaners being sold in America. Overnight, the glass cleaners that really worked on tough road grime, those with an 8% or more concentration of Isopropyl Alcohol, disappeared. Never mind that Isopropyl Alcohol has never been proven to be an ozone depleting chemical. It falls into the category of a VOC and is subject to the 4% limit. The spray-on / wipe-off glass cleaners that were left were all about the same. Yes, a manufacturer could use a little different wetting agent or surfactant but the cleaning "punch" came from the VOC and they were still limited by the 4% rule. 

    Since you couldn't make a glass cleaner clean any better, what else could you do to gain a competitive advantage. If you were Unelko, the world's leading manufacturer of rain repellent coatings, you would add a rain repellent to your glass cleaner. Now in one operation, you are both cleaning and sealing the glass with an invisible, rain repellent coating to improve visibility while driving in rain, sleet and snow. Unelko's product, sold under the Rain Clear label as Rain Clear™ Glass Cleaner & Rain Repellent is one of my favorite glass cleaners. I have never seen this technology from any other company. Until now.

    Stoner Invisible Glass with Rain Repellent is entering the market with a competitive product. It's a cleaner that contains a protective agent that fills in the tiniest scratches and crevasses. Stoner claims this protective shield repels dust and water enabling better visibility. To test their claim, Jan and I did an A-B comparison with Rain Clear Glass Cleaner & Rain Repellent.

Rain Clear Glass Cleaner was sprayed
on the left side of the windshield.

Stoner Invisible Glass w/Rain Repellent was sprayed on the right side.


    In spraying both products we noticed our first difference. The Rain Clear product did not spray as evenly. It came out in larger squirts that immediately started to run. Stoner Invisible Glass with Rain Repellent was a light mist. It clung to the surface without running. Both products were buffed with a Microfiber cloth. Rain Clear Glass Cleaner took several more wipes to create a streak-free finish. The Invisible Glass side wiped easily to a streak-free finish.

    Next, I sprayed the windshield with a fine mist from a garden hose. As soon as water hit the glass, both sides started to sheet the water off. I have no doubt that, had the car been in motion, both sides would be clear. A draw.

   
    While both products produced the same end result, Jan and I both liked the ease of application of the Stoner product. As soon as we have a rain shower, I'm going to test both products again, on the road. Stay tuned.

Follow-up Report: It's now been 20 days since I cleaned the glass with both products and we've been through three days of light rain. At 45 to 47 mph the Rain Clear treated side still sheets water while the Stoner side has noticeably larger "wet spots" that do not sheet off. It's obviously time to clean and treat the glass again. 

    It's probably unrealistic to expect any spray-on rain repellent coating to last much more than a week. Had I cleaned the glass every week-end when I washed my car, I'm confident both products would have performed flawlessly. While I like the ease of wiping of Stoner Invisible Glass with Rain Repellent, I can't help but be impressed with the performance of Rain Clear Glass Cleaner & Rain Repellent.

    Net weight 643 ml / 22 fl. oz. spray.




92186$6.99


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