3M 08609 Window-Weld Super Fast Urethane Windshield Adhesive, High-Strength Fast-Curing One-Part Auto Glass Sealant, 10.5 fl oz (310 mL) Cartridge, Black

Used this on my 2009 Audi A4 Convertible top glass rear window and it is holding extremely well. It has amazing sticking power, dries pretty fast. My only caution is when doing a window on a convertible top, you don't need a huge amount to do a good repair. I cut the bead line too big and I put too much material between the top and the glass window. I also used the CR Lawrence Suck and Clamps to hold down the top to the glass. So the combination of too much material and really tightening the clamps too tight, I made a mess and had a lot of material ooze out onto the glass. Also, I tightened down the clamps so tight that I must have forced some of the material up through the fabric, so that when I removed the clamps I had visible stains on the outside of the convertible top. However, my top is 9 years old, and this repair should get me another two years until I can buy a new one. Listed below are my recommendations. 1. Make sure to buy the primer that goes with this and use it. 2. Raise the top ever so slightly to take the pressure off it, then brace it so it doesn't drop down. I used rags under the back of the top and a cardboard box between the top and the front window. 3. If you have a lot to repair, consider doing it in small steps, it's much easier that way. 4. Use thin disposable gloves, have several extra on hand. If you get any material on the gloves, put on a new pair. 5. Cut a small bead line, and apply a thin coat to the sealing area between the glass and the top material. 6. Use the CR Laurence clamps, but don't tighten them too tight, only enough to get a good touch seal so the bonding material makes good contact. An alternative to the clamps could be one or two automotive inner tubes or pool toys, that you brace inside the car and then inflate to allow them to put pressure on the glass from inside the car. 7. If any material oozes out onto the glass, loosen the clamp a little and allow the material to set up for about an hour. Then you can take the clamp(s) off and very carefully cut the xtra material using a razor blade. Be very careful not to fray the top with the razor blade. At this point the material doesn't need a lot of pressure to cut off, and light pressure on the blade will easily cut it. Re-apply the clamps. 8. Starting within 30 minutes of applying the material, gradually ease the pressure off the clamps until after about 3 hours you can completely remove them. 9. I let the repair set for two days before I drove the car. 10. Take your time, it's not really hard to get a good repair.

Works great, haven’t had any issues and that’s cause I have a bass system right next to that window and it’s set good! Defined recommend

The glass in my convertible fell out because of the heat when it was parked on one of the record temperature days we just had. I bought the windo weld and the one step primer to repair it. To get the old adhesive off, I used a combination of a heat gun and acetone. I let the primer dry for about a day. I cut a v shape into the cartridge tip and used a caulking gun that had a 18 to 1 throw ratio. I had my grandson in the back seat pushing the glass out as i applied all of the suction cups. Once it was in place, I let it sit for 48 hours. At 24 hours it is 90% cured and it is fully cured after 2 days. I over applied the adhesive so I had some ooze out. Trimming the excess was pretty intensive so I would suggest being careful with that. This stuff is brutally hard when it cures. My top was old but it was in good shape. Most upholstery shops won't do this and want you to buy a new top. It was time consuming but if you are careful and follow the directions you can save yourself a lot of money. Now I just have to find somebody who needs all of these suction cups.

Excellent adhesive for auto glass and weatherproofing! Bonds strongly, cures fast, and remains flexible. The black finish blends seamlessly, and the cartridge is easy to use with a standard caulk gun. No leaks or cracks—just a durable, long-lasting seal. Perfect for professional and DIY projects. Highly recommend for reliable, high-performance results!

Product itself worked good, but did not come with the screw on nozzle as pictured. I had to search around for something to fit

Use the 3m primer. Follow instructions. Sets in 15 minutes but be patient and let cure for 48 hours for max strength. Used to rebond plastic convertible rear window to top. It worked. It comes out like toothpaste and stays put. Doesn’t run. Use gloves and have a cleaner handy. I used the non-flammable version of brakekleen

Excellent. Very messy. I was questioning exactly how this worked (bc it has a can opener type end) but a standard caulking gun works fine. I cannot emphasize it enough to wear gloves, use masking tape, and for SURE use the prep primer. I had to replace the back glass track on my F150. It’s holding excellent so far.

This 3M 08609 Window-Weld Super Fast Urethane Black window adhesive is VERY STRONG and works well if the area is prepared correctly. Follow these instructions for excellent results. 1. Thoroughly clean the bonding surface. If you are replacing glass, remove ALL existing sealant. 2. If bonding surface is bare metal, prime with 3M 08608 Super Fast Urethane Primer. 3. Clean glass surface with 3M 08968 Glass Cleaner. 4. Prime glass surface with 3M 08608 Super Fast Urethane Primer. This primer provides UV protection for urethane adhesive and is a must for windshields or rear windows that do not cover bonding surface with black/ceramic coating. This step is optional if the bonding surface will be covered by black/ceramic coating on the glass. 5. Apply a quarter-inch (0.25") bead of 3M 08609 Window-Weld Super Fast Urethane Black to either bonding surface or to glass (whichever is easiest) and press glass into final position. 6. Cleanup adhesive using 3M 08984 General Purpose Adhesive Cleaner or 3M 08986 General Purpose Adhesive Cleaner. 7. Allow forward facing glass (windshields) and side glass to cure for 12-24 hours. Allow rear facing glass (rear view windows) to cure for 24-48 hours. Adhesive takes longer to cure in low humidity (e.g. 25% RH). IMPORTANT NOTE REGARDING USE OF THIS ADHESIVE WITH CLASSIC CARS Remember that this is VERY STRONG and VERY PERMANENT adhesive. If you use this to seat glass into a metal window channel or a metal window frame, you may not be able to remove the glass from the metal channel or frame without damaging the metal. If you are restoring a classic car, consider using the proper thickness glass setting tape to set the glass into channel or frame instead of permanently gluing it in place with this adhesive. Glass setting tape is available from most window installers and cork/rubber glass setting tape is also available from various classic car restoration websites. If unsure of proper thickness (e.g.: 1/16", 1/32", etc) take glass and channel or frame to a window installer so they can confirm thickness for you.