What material is the rear bumper cover
 

While removing my rear bumper cover I almost completed separated one of the plastic brackets that is plastic welded to the bumper cover from the factory. I used a 2 part epoxy that I had on hand to glue it back to the bumper but the bond didn't hold after driving the car (you can see the epoxy in the picture). So now when driving, the upper part of the bumper cover between the tail lights is able to flex enough that it is contacting the bottom lip of the trunk lid and marring the bumper cover and the lip of the trunk.

Does anyone know what material the bumper is made out of so I can get the correct glue or can recommend a better fix? The closest information I could find online when searching was this site, but it only covers up to Gen5 https://ricksfreeautorepairadvice.co...bumper-repair/ It lists the 2013 rear bumper as Polypropylene (PP) which is notoriously difficult to glue. If the Gen6 rear bumper is also PP I found a 2 part epoxy called MMA 500 that might work

Lethal Camaro talks about the bracket that I partially pulled of in his video here: https://youtu.be/vzqwd8X_6sw?t=385 In the video you can see it looks like he has the same issue where the bumper cover is wearing on the trunk lid

He shows how I should have removed it in detail in the video here: https://youtu.be/vzqwd8X_6sw?t=465

Alas, this is a pretty weak design, I had the same problem after popping the rear bumper to install a new diffuser. A piece of strong double sided tape temporarily fixed it, but I'd also be very interested in a permanent, proper solution.

Gorilla Glue, but prep the area well, and you have to follow the directions.

Following for future reference, just in case. I haven't damaged it, but I noticed it was a weak point when I removed the rear bumper in order to take out the rear lights to modify them as required by law when I imported the car from the US.

I ended up purchasing MMA 500 and used it to glue the bracket back onto the bumper this spring before taking my car out of storage. I put glue on all the parts of the bracket that contacted the bumper, not just the spots that were previous plastic welded. After applying the glue I clamped the bracket in place for about 30 hours and then it sat about 5 days until the next weekend when I put it back on the car.

The glue seemed to have solidly bonded to the bracket and the bumper and seemed more sturdy than the factory plastic weld. After putting the bumper on I have put on a couple hundred miles, with about half of that being on the interstate and the glue seems to be holding well from what I can tell. The bumper doesn't seem to be able to flex up to contact the bottom lip of the trunk anymore.

I will provide an update after driving the car throughout the summer, but initial results indicates that this did the trick. Just hope that it will hold up over time.

Notes if you are purchasing the same thing, MMA 500 comes with 2 static mixing nozzles, but make sure you purchase the manual applicator gun if you don't already have one.

Thank you so much for the solution, regron, much appreciated :respekt:

Bumper covers are typically EPDM, which is basically polypropylene (PP) with a stiffener. You can do minor filling with a hot glue gun, which is sticks of PP. Fixing a crack requires some bracing from the back side before filling.