Rain-X Windscreen Repair Kit - Quick & Cost-Effective Solution for Cracks & Chips - Easy Application - Prevents Spreading - Strengthens Glass - 15-Minute Repair

***The kit I received was supplied with full English instructions. I suspect previous reviews had an older packaging without this.*** I’ll preface this review by stating I’m an ex windscreen repairer with 10 years’ experience in the employ of a well-known vehicle glazing company. I’m sure you can guess which one *cue annoying ad jingle*. I mention this to give context to the fact that I have a lot of comparison basis in regards to equipment, usage, results and expectations. Firstly, the concept and application is more or less identical, bar the Rain X kit not having active, external vacuum; it creates its own vacuum due to the plunger assembly. Aside from that, the procedure is the same: - Clear the surface of debris/glass fragments - Position resin port directly over the impact point - Apply resin - Apply plunger/vacuum - Wait for air voids to fill - Cover surface with resin & patch - Wait for full cure (external UV light, if available, would work wonders) - Scrape away excess cured resin - Refill surface if necessary and repeat curing stage (not always necessary) When I first saw these kits hit the market as a windscreen technician, I swiftly disregarded them as inadequate and a cheap mock-up from companies that couldn’t compete with the big players who have design patents and entire R&D departments dedicated to producing equipment for this purpose. After using this kit for the first time, I’m happy to report that I was mostly wrong. The resin filled the chip’s voids and cracks just as well as I would’ve expected my previous “professional” level equipment to do. Over the course of doing 10+ repairs per day, 6 days per week for 10 years, you get a feel for these things. In fact, the repair was so much simpler and accessible for the average car owner due to not needing any external vacuum compressors, airlines or power supply. Cosmetically, you can barely see the chip now and it was indeed very visible beforehand with multiple “legs” radiating from the impact point, full of air and very dark from certain angles. Now, you’d be hard-pressed to spot it if you didn’t know where it was. And we’re over one month in with no sign of degradation or cracks spreading so I’m confident the repair will hold. My only regret? In my enthusiasm to get the job done, I forgot to take before & after pics 🤦‍♂️ Finally, an important tip for those looking to DIY your windscreen repair: if the chip has been recently exposed to water/rain, wait until it’s completely evaporated from inside the chip before attempting repair. Bare this in mind before you wash your screen in an attempt to clean the glass beforehand - this is actually counterproductive. The reason for this is water will dilute the resin, prevent it from filling and displacing air in the break, and also prevent the resin from curing properly. You can tell if it’s full of water by a translucent, faintly milky appearance, whereas a dry chip will appear darker with more pronounced air voids. If in doubt, leaving it in the sun for a day if possible should do the trick. You can accelerate drying by using a hairdryer on gentle heat, but BE CAREFUL with this, especially in cold weather as thermal shock is one of the best ways to send your chip into a full crack. Also, don’t apply pressure to the chip or attempt the repair if the glass is hot, for the same reason. In summary, this kit works, is great value for what it can achieve, will repair multiple chips (and cracks, according to the instructions), and is more or less as good as a professional repair if you prepare correctly, as with any job. Hope that helps.

Don't expect this to make your damage disappear altogether - I purchased it not having this expectation, but rather to minimse the damage and help to strengthen three small areas of damage on my windscreen to stop them from getting worse. To be honest, I was rather surprised by the results - the product is easy to use and is quite good at hiding 80% of a small crack in the screen. You'll struggle to make too many inroads with large bullseye chips, but it does improve things and helps prevent spread. Given that professional repairs are ridiculously expensive, this is a decent alternative that will do 80% of the job for a fraction of the cost.

A very easy way of repairing a stone chip on your windscreen. The whole process took me around half an hour and I was truly amazed by the results. Clear instructions to follow - make sure you take your time to align the plastic device perfectly with the centre of the stone chip. This isn’t going to make the stone chip vanish completely but as you can see from the pictures it’s a vast improvement and it should therefore prevent the chip turning in to a crack. Highly recommend this product and there’s loads left in the tube for further use should you get another stone chip.

Excellent product worked very well and saved me a fortune only small point remained from bigger crack, very happy with the result.

Such a well known brand, very disappointed that it didnt get into the cracks properly. Still, it is done now, and I cant change it. Funnily enough I was told the cheaper one was good, but I recognized the name and thought it would be better.

Razor and curing strips missing so unable to follow the instructions. Seal also broke during step 5 and spilt resin everywhere. Terrible

I recently had a small chip with two cracks (about 6mm and 10mm) on my windshield and decided to take matters into my own hands after a frustrating experience with a professional repair service. A few months ago, I used Halfords’ service, and they actually made the crack more noticeable and scratched the glass around it. This time, I went the DIY route—and I’m so glad I did! While the product didn’t come with English instructions, I found plenty of great tutorials on YouTube, so it wasn’t a big issue. I may have used a bit too much resin, as some leaked out even after tightening, but I saw that as a plus—more pressure to push the resin deep into the cracks! To give the resin more time to settle, I covered the repair with a black hoodie since I was working outside on a sunny day. Once the resin cured, it was easy to scrape off the excess with a razor blade. The result? Way better than I ever expected! From the outside, you can’t even tell there was a repair. Inside, there’s only a faint shadow if you really look for it. After a few hours, the repair became completely invisible! I was so impressed, I used the leftover resin to fix a chip on my watch face caused by welding spatter. It filled in perfectly and is barely noticeable unless you look closely at the right angle. I wish I had taken before photos to show just how good this repair turned out. Definitely worth every penny!

I used this for two chips, worked pretty well. The instructions state to add the resin in when it's in the shade and then let it cure in the sun, no shade so I just put a cloth over the applicator instead. On one chip, it seemed to fill out the crack mostly but the point of impact was basically invisible. On the other one, it was the opposite where the big crack was gone but the point of impact was still visible. Maybe I needed to let the resin spread for longer. Overall, it repaired the vast majority of my two chips so I'm happy with it.