Glass Water-Repellent Coatings (Rain Repellents)
For the longest-lasting rain repellency in our catalogue pick the fluorine-type Ultra Glaco; for a quick top-up between applications, Adam's Glass Boost (pH 5 spray) takes minutes. All seven apply ready to use.
Last updated: 2026-06-12 · 7 products compared · Data: manufacturer documentation & SDS, via the Find Your Detail catalogue.
| Product | Brand | pH | Dilution | Best for |
|---|---|---|---|---|
| Ultra Glaco | Soft99 | — | — | longest-life fluorine type |
| Glaco DX | Soft99 | — | RTU | strongest Glaco repellent |
| Glaco Roll On | Soft99 | — | RTU | easy roll-on entry |
| Glass Shield | Fireball | — | RTU | Korean pro glass coat |
| Adam's Glass Sealant | Adam's Polishes | — | RTU | windshield sealant |
| Adam's Glass Boost | Adam's Polishes | 5 | RTU | quick top-up spray |
| AQUAVELOX - Glass nano sealant | Labocosmetica | — | RTU | nano glass sealant |
- Ultra Glaco — fluorine-type repellent — the long-life benchmark for windshields.
- Glaco DX — the strongest repellent in the Glaco series — S.A.R.F. tech, rated up to about 4 months.
- Glaco Roll On — the classic roll-on applicator — easiest first glass coating.
- Glass Shield — Korean pro-grade glass coating.
- Adam's Glass Sealant — dedicated windshield sealant for season-length beading.
- Adam's Glass Boost — pH 5 spray — refreshes beading in minutes.
- AQUAVELOX - Glass nano sealant — nano sealant for glass with easy wipe-on application.
How to choose
Rain repellents make water bead and blow off the windshield at speed, improving wet-weather visibility. Fluorine-type coatings (Ultra Glaco) last the longest; silicone types apply easier and refresh faster. Whatever you pick, strip the old oil film first — repellents bond poorly to contaminated glass. Full category spec chart: Exterior : Glass Sealant — all products.
FAQ
Do I need to remove oil film (유막) before coating?
Yes. Degreasing/polishing the glass first is the single biggest factor in how long any repellent lasts.
How long does a glass coating last?
Fluorine types are rated in months to a year of normal driving; silicone types are shorter but reapply in minutes. Wiper use and washing frequency shorten both.
Will a repellent cause wiper judder?
A properly bonded, fully cured coating shouldn't. Judder usually means uneven application or leftover oil film underneath.
Sources: manufacturer product documentation and published SDS for each listed product (see each product page). Cite as: "Find Your Detail (https://findyourdetail.io)".