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

I bought a 2011 Audi convertible with the back windshield falling out. After some meticulous cleaning of the old adhesive, I used the 3M primer with this to glue the windshield back in. I used clamps with suction cups and pressure from inside to hold the windshield in place for drying. It now is holding beautifully and I have a fully functioning convertible again!

I was extremely happy with how this adhesive worked ... I followed directions found on the internet using suction cups, 3M primer, primer spreader sticks/balls and 3M Window-Weld urethane adhesive w/wood strips to spread the load. I was particularly pleased with the good initial tack and the extended open time of the adhesive. This allowed me to move the glass and stretch the top while my son perfectly aligned the fabric to the existing glue line resulting in a very near perfect repair. The rear glass bond had failed very quickly (over 2-3 days) resulting in over 3/4 of the glass coming loose. First the top section separated and by the time my supplies arrived the passenger side had separated past the corner and half way across on the bottom. It took 3 separate "gluing" sessions to bond it all back up over a 2 day period. The first 2 sessions re-glued the bottom section and the upper corners leaving the full width of the top glue-line for the final session. BTW - The picture of the passenger side of the glass is the trial-fit and does not show the use of continuous spreader-sticks around the corner. I don't think the "After" picture shows it but there is a small flaw in the bead across the top ... I had too much space between the clamps and I did not get perfectly consistent squeeze-out in one small section. The important note is that by saving the "tip" from the glue cartridge I was able to plug-it-up and keep the adhesive from drying out so I could continue to use it as each section cured (4-5 hr minimum). In hindsight, I should have done the final top section in 2 parts but I was (incorrectly) concerned that the adhesive would dry out in the tube before I could get the full window re-glued. Excess primer drips/runs and Window-Weld adhesive squeeze-out was of no concern. A razor knife cleaned it all up both perfectly and quickly. It has been a week since the repair and there is no evidence of the adhesive failure ... I expect it to last longer than the rest of the original 13 year old top. If the last of the original/factory installed bond fails I will not hesitate to order again and repair it in exactly the same way. Totally satisfied.

Used this on my audi mk1 convertible, worked GREAT, probably better than original install

Great product for DIYs - used to replace the rear glass in my convertible because local glass shops wouldn't do it. Suggest to only use with battery operated caulk gun, lots of clamps, masking tape, and glove, gloves, gloves.

I want to thank the last reviewer’s comment because I too have a 2004 Volvo C70 convertible and wasn’t sure if I should do it until I read it. I used the recommended product and the associated primer to glue the back window back to the top. A few tips: 1) Use latex gloves and replace them often 2) Open the roof slightly before you glue the roof I’d say about an inch open from the back as a gauge and dont fully close for 2 days. 3) Tape the boarder around the window to help during cleanup. 4) In order to push the rear window inside I used down sleeping bags that worked really well. 5)I glued the top and top corners first because the clamps I ordered only had 6. 6) I used paint stir sticks to apply even pressure to the window. 7) Plan for 2 -3 days for this. 8) Have a cover for the roof to protect from the elements. 9) Check out the videos as well. It worked great and I hope not to do this again

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.

Powerful

Replaced a window, worked great.

Llego en bien estado.

Great product when used properly and in combination with 3M primer. The rear window on my wife's 2006 Crossfire Roadster separated from the convertible top so I used these two products to glue it back to the top. About 3/4 of the window needed to be glued back and these product worked extremely well. You need to plan how you'll do it and take your time doing it but you'll be happy with the result. Total cost of the items needed (primer, window weld and suction cups) was about $150 and was done over 2 days given you can only do half the window at a time.

I actually bought this to fill in engine mount(s) where they started to crack and move to much. This Urethane made the mount(s) a lot stronger and functional again (yes, there are some vibrations can be heard, but it will go away after few days of use).