help removing this baked on tint please

[tintcracker]

so we've got this Nissan 350z, and to remove the back window tint, we used a black thrash bag with soapy water between it and the tint, let it sit in the sun. anyways a coworker pulled it and left the bottom later. and it will not come off. help please! we've steamed it, scrubbed it, soaked it with degreaser. nothing will get it. the customer wants his defroster to work.

[McCoyH]

Degreaser? Is the film still there or just the adhesive? Try 100% ammonia mixed 1:1 with water and a steel wool OR magic eraser OR white scrub pad

[tintcracker]

The clear layer was all that came off. I know ow to remove glue but I gotta get to it first. If I could use a blade it wouldn't be a problem.

[tintcracker]

This stuff is on like super glue, I swear its the worst myself or my boss has seen

[McCoyH]

Use a razor blade to pick the corner / edge of it off (the part thats behind the black border on the outside edge of the window) and peel from there. You wont harm the defrost that way

[tintcracker]

I've removed rear window film plenty of times, but this stuff is brittle and there's no peeling it. And like I said the top layer peeled off already. So ammonia will eat into it enough to peel it? Normally the bag trick or steaming it works.

[tintcracker]

And basically all the tint around the edge peeled off. There's like a 3 x 3 square in the center of just the bottom layer

[jh812]

You'll be lucky if you can get it to peel. When the scratch coat comes off it tends to flake. Use ammonia next time with the trash bag. Not soapy water.

[tintcracker]

It comes off like old lacquer paint. Hardly at all lol

[McCoyH]

So use a razor blade to pick at the corner of the 3x3 square thats left. Just pick at the part between the defrost so you dont harm the defrost. Theres like an inch of room hetween each defrost line. If nothing else, tell the car owner hes SOL