im trying to put new fabric over my doors and headliners existing upholstry. the doors worked well but the headliner keeps saging in some spots. I used various spray glue adhesives and none of them will work. can someone let me know what will work, or what upholstry shops use?

 

Here are some links to two products I've used in the past with some success though I have'nt done a headliner yet. I would suspect the first one will work for you. Hope this helps aviator

http://solutions.3m.com/wps/portal/3...beSC2785KN7Pgl

http://solutions.3m.com/wps/portal/3...beSC2785KN7Pgl

 

Headliners can be nasty. Many headliners are made by bonding a foam product with a thin upholstery product. Often it is the upholstery coming unbonded from the foam rather than the foam and upholstery coming unglued from the headliner core material (the core being fiberglass, masonite, cardboard, etc).

If you are trying to afix the new material to a sagging upholstery which has become unbonded from the foam, you might be out of luck. If attaching to a good bonded headliner that is sagging from the core material, you must first reattach the headliner to the core material; then you can overlay your new headliner.

The best practice, though, is to completely strip the old headliner from the core material, clean the core material very well and apply the appropriate adhesive http://www.bendersweb.com/chemicals.htm#ADHESIVESI believe these numbers can be cross-referenced with other major brands like 3M.

Not knowing your headliner situation, you could have various issues troubling your install. It seems some Toyota's use what appears to be a core material which is coated with an adhesive and a type of spray-on fabric, almost like a felt. If that is the case, you'll want to remove the fabric coating and adhesive before applying your new headliner. Otherwise you might be looking at a sagging headliner regardless of the type of adhesive used. You can use the link above to find cleaners as well.

Good luck!