Soft99 Glaco W-Jet glass sealant 180ml

Glass sealant at the push of a button — ready to go even in the rain with the Soft99 Glaco W-Jet

What makes the Glaco W-Jet special? The Soft99 Glaco W-Jet is an aerosol glass sealant with a twin-jet nozzle that you can spray straight onto a wet windscreen, even in the rain, and spread with the wipers — instant sealing in seconds, no prep needed.

The Soft99 Glaco W-Jet is the emergency fix and quick sealant of the Glaco range — built for those moments when there's no time for a proper glass treatment. The clever bit: you can spray the W-Jet straight onto a wet windscreen and let the wipers spread the sealing film. Day-to-day that means even once the rain has started, you can treat the glass in seconds and get an obvious beading effect right away. The punchy aerosol can with its twin-jet nozzle covers the whole windscreen in a few passes. With 180 ml in the can, the W-Jet gives you around 50 percent more mileage than your average spray sealant and keeps the hydrophobic layer going for several weeks.

• Works in the rain, straight onto wet glass. No other product in the Glaco range goes on a wet surface. The W-Jet was built for exactly this: spray it on, switch the wipers on, done. In practice that means you don't have to wait for the glass to dry — perfect at service stations, in car parks, or right before you set off when the rain kicks in.
• Twin-jet nozzle for wide, even coverage. The W-Jet's special double nozzle fires two parallel jets that throw a broad spray fan. That's the trick that lays the sealant down evenly across the glass with no gaps — without wiping it out by hand.
• 50 percent longer-lasting than standard spray sealants. Thanks to the reworked formula, the W-Jet's beading holds up noticeably longer than comparable spray products. In practice four to six weeks under normal driving is realistic — a cracking figure for a quick sealant.

Detailing1's tip from the shop: Day-to-day we recommend running the Glaco W-Jet alongside a longer-lasting base sealant like the Ultra Glaco. When the beading from your base coat starts to fade after a few months, you can top it up fast with the W-Jet — without prepping the glass from scratch. Keep a can in the glovebox and you're always good to go.

How the Glaco W-Jet aerosol technology works

The Glaco W-Jet uses a silicone-based aerosol formula that atomises under pressure and lays down as a thin, even film across the glass. The twin-jet nozzle throws two parallel jets that cover a wider area than a standard single nozzle. In practice that means four to five passes left to right are enough to treat a whole windscreen. The key technical difference versus other Glaco products is in the formula: where products like the Ultra Glaco have to cure on a dry surface, the W-Jet formula is built to work its hydrophobic magic even when there's water in play. The silicone molecules bond even on wet glass — the wipers spread the sealant evenly and clear off the excess water. The resulting film is thinner than with hand-applied sealants, which explains the shorter lifespan, but that's no drawback for a quick job. One common slip-up: spraying too close to the glass. The sweet spot is 20 to 30 centimetres — from that distance the mist settles nicely.

Using the Glaco W-Jet properly — the fastest glass sealant in the world

Using the Glaco W-Jet is built around pure speed — across two different scenarios. Scenario 1 — dry glass: knock the loose dirt off the windscreen, spray the W-Jet from 20 to 30 centimetres in horizontal passes across the whole screen, wait 10 seconds and buff it off with a clean microfibre cloth. Scenario 2 — wet glass in the rain: spray the W-Jet straight onto the wet windscreen, switch the wipers on and let them run three or four cycles. The wipers spread the sealant evenly and clear off the excess water. The beading kicks in straight away. Either way it takes under a minute. For the best result on dry glass, pair the W-Jet with a clean-up first using the Glaco De Cleaner. On wet glass the W-Jet works without any prep too — though it won't last as long, since dirt particles can mess with how well the sealant grabs.

Durability and beading — what the W-Jet does day-to-day

The Glaco W-Jet's beading is there the moment you've applied it and works reliably from about 50 to 60 km/h. Raindrops get caught by the airflow and run off upwards in streaks. Compared with the Ultra Glaco, which already kicks in from 45 km/h, the W-Jet needs a touch more speed — but it goes on many times faster. Realistic lifespan is four to six weeks on dry glass and two to three weeks with wet application. If you use the W-Jet to top up an existing base sealant, you can stretch it to six to eight weeks, since the base coat gives the W-Jet film extra stability. Against other spray sealants on the market, the W-Jet genuinely delivers the 50 percent longer life the maker claims — a figure it hits thanks to the tweaked silicone formula and the even spread from the twin-jet nozzle.

W-Jet vs. Glaco Roll On Large — spray against roll-on

The Glaco W-Jet and the Glaco Roll On Large both scratch the same itch — a fast, fuss-free glass sealant — but they play to different strengths. The W-Jet wins on speed: under a minute to apply, works in the rain, no drying time. The Roll On Large wins on durability: two to three months against the W-Jet's four to six weeks. The beading on the Roll On Large is a bit stronger at low speeds (from 45 km/h vs. 50–60 km/h on the W-Jet), because the roll-on builds a thicker, more even layer. If you look after your glass regularly and can spare five minutes once a month, the Roll On Large is the better fit. If you want something for surprise downpours or a quick top-up on the road, grab the W-Jet. The ideal setup is the combo: Ultra Glaco or Roll On Large as your base sealant, the W-Jet in the glovebox for a fast top-up on the move.

Who the Glaco W-Jet is ideal for — buying advice and target user

The Soft99 Glaco W-Jet is the perfect glass sealant for drivers who value spontaneity and speed. The big winners are people who are on the road a lot and have no garage — the W-Jet works outdoors in the rain and needs no controlled setting. As a glovebox backup it makes sense for any driver: when the beading on your main sealant fades or a shower catches you out, you've got clear vision back in seconds. It's a handy fix for hire cars and car-sharing vehicles too — quick treatment with no faff. Pair the W-Jet with the Glaco Glass Compound Roll On for a thorough deep-clean on first use and the Glaco Mirror Coat Zero for the wing mirrors. One limit to flag: the W-Jet isn't built as a standalone long-term sealant. If you're after months rather than weeks, go for the Ultra Glaco or Glaco DX instead.