I had the same problem with my 2010 C70. After a few failed tries, I found that J-B Weld 50133 Plastic Bonder did the trick. I purchased it from Amazon for $6.95

Basically I took each clip piece and cleaned them up really well. I also cleaned up the headliner. Note: I used the old clue outline to make sure I can line the clips up to their original location. Use a marker to mark your spot(what ever color works for your application) Once all of the old glue was removed I used a metal brush and scuffed the plastic clips up a lttle. I felt this would help the clue stick better. Side note: I also removed the little plastic tabs from the roof of the car, this will make for an easy install.

Once everything was prepped and ready, I applied the glue(follow glue instructions on the package)to 1 clip at a time and to its designated spot on the headliner. Then put the 2 together, and apply a pressure and hold for about 30 seconds until they bond. Repeated on all of the tabs. I let it rest for about 1 hour. Then I took the little plastic tabs and slid them into the plastic clips. Once all of the plastic clips and tabs are together, take your time and be gentle and push each one back into their designated spot on the roof of the car.

I did this on the front and rear headliners and It's been about 3 months and the headliners are still up.

 

I was just about to try putting bolts through the liner and into the holes where the pegs were, but a friend pointed out the metal bolt heads could scratch the roof of the middle section when it the top folds up.

I'm so frustrated with this. This Texas heat is brutal and I don't think any adhesive will be a permanent solution.

Have you tried bolts yet or had any success otherwise?

 

Let me offer this advice from a dealer's perspective. We handle very few convertibles because of issues like this. As the car ages, so does the convertible top and liner. They have a useful life of about 10 years.

The last convertible that I bought was a Mercedes and we ended up having a new convertible top installed. The headliner part was excellent but the top was shot. I still spent $1600 between the top and labor to install. It looks new but most people will not spend that kind of money.

Buying a convertible sounds neat until the reality of the maintenance and repair comes along. If you like the car and want to keep it, consider having it all replaced. An upholstery shop that does convertible tops probably has an adhesive that will long outlast the factory stuff. There are not quick fixes here and the ones that are will ruin the appearance of the car. I would not buy a convertible that had any kind of tampering done as is described above.

 

I didn't think about using screws. But I can understand your frustration. I was getting to that creative point, until I came across the JB Welds. So far it's still holding.

 

Thanks for your input and I agree 100%. I'm going to give the JB Weld a shot; if that doesn't hold, then I'll give the upholstery shop a chance.

 

The upholstery shop might refuse the job after the JB Weld repair.

 

The dealer is talking about softtops, not a hard top.We are talking about a 3 piece headliner mounted onto metal. It shouldn't be this hard. Mine fell in the middle.Took off all the clips and cleaned them. Opened the top halfway. Applied contact cement ( the solvent kind ) to the spots on the backside of the headliner where the glue was, and to the clips. i let the cement tack up for the prescribed time and reinstalled the clips.I got a helper to press the glue together two at a time to keep it lined up. Press hard for 30 seconds each. First the front, then the back. Been up two weeks so far, no problems. The best thing is contact cement is rated for high heat, and I can easily get it. If it does let go again, its an easy 1 hour fix.

Update: been up over a month now, still no problem at all. Seems to be holding up well.

 

 

 

The JB Weld job I did is still holding. No roof sag. Good luck all. Did anyone else have success with the JB Weld ?

 

I agree but we are talking about a hard top convertible, not soft top.

 

Correct, I'm referring to a 2010 C70 Hard Top Convertible.

 

So sorry, I was replying to an earlier post. On my way to get JB Weld

 

Actually stopped at a Auto/Boat upholstery shop. They glued it up and charged me $20! Holding up fine so far

 

Folks, thought I'd update you (for any interested). I have a 2009 C70. Since I initially posted, my liner has remained intact. Granted, I park it under a carport, but so far the JB weld I applied has held up well. I had to redo my front liner several months after the back liner dropped, so I'm good for a while. In case anyone is interested, I followed both Joe7brothers and Platinum's advice, took my time, the roof was open in the service position (about half way up, then turned car off after I got it there). JB weld is the way to go! Glue the plastic feet to the underside of the liner where they were before, but make sure that the plastic part that is inserted into the roof is attached loosely to the plastic feet. That way, once the glue dries, you can just line up the holes with the roof and push the plastic pieces up (with a little pressure).
The only glitch I encountered (unrelated to the plastic clips) is that when I was repairing the front panel, somehow the two front tension strings for the right and left folding wings of the front liner got disconnected from their end brackets. these are the two Kevlar (?) looking strings that fold the right and left outermost sides of the front liner so that it folds correctly when opening the roof and unfold correctly when you close the roof (just prior to locking it closed). So, my tension strings are fine and the end brackets are still in place, except I can't put the strings back in w/o having to pry open the brackets, which are connected to the roof frame. AND, the kicker, I have to make sure that if I do this to re-insert them, they have to be reinserted at the right distance, so that they function as before - not too much pull and not too much slack.
Would anyone on this forum be willing to post a few good pictures of their roof in the open position? . I need to see pics from the side where the front liner tension strings are connected to the roof frame. The brackets are too small square pieces of meal that can pivot back and forward as the roof moves. They're held in place by a small star-like washer. It's easily seen by following the tension strings to the end point where the washer is. I'd really appreciate a few close up pics of that area so that I can determine how far I should reinsert the tension strings into the brackets in my car. Maybe even measure with a measuring tape how much string is inserted from the top of the bracket and if it is crimped with anything else at the bottom of the bracket, or just sits there . Maybe this is too much to ask, but the only dealer here has not had a c70 on the lot for me to see. I've also been looking for some that are for sale but they've been soft tops, not hard top like mine. Any help would be appreciated. If you want to email me: yahabibi@bellsouth.net. I'd be willing to help walk someone through a liner repair by phone if needed. Glad to help. Thx so much!

 

I’m going to try this repair tomorrow. I have a 2008 C70 with 245000 miles on it. Florida sun is a killer. Will let you know how I make out. Mine has always been garage kept while home. However, work it was out in the open. Thanks for the good instructions.

 

Kristejoy2, sent you a pm.

 

How'd you make out? Any issues? Hope it went well.

 

How did you slide the feet into the plastic clips when it was already up? I'm at the point where i was pushing the clips through in the back and when I started the front, the back feet came of the clips, when I slide them back it's fine until I start to put the front on. The feet are secure with the JB weld, but the the clips are in the holes and sliding them back in seems impossible. Any suggestions would be greatly appreciated

 

Local Volvo dealer $1,385, new, lifetime warranty. Had local boat cover shop install 4 screws with matching caps from excess material. Removed rear clips. $100.00.