86IROC112

So I'm in the sanding stage on my paint project and have removed all GFX and front and rear bumper covers. As I started sanding I realized I have to go all the way down to bare plastic on the front spoiler and bumpers to get rid of the cracks in the old paint.


I would assume I need to add a flex agent to my primer and base but should that plastic be painted or treated with anything else before primer? I noticed there were a lot of layers of primer or paint under the base coat on the front spoiler.


Thanks

Jorlain

iTrader: (4)

I'm more or less in the same stages right now. From what I have read, modern paints shouldn't require a flex agent, and adding it only helps for about 6 months.

I've also seen some people swear by using Bulldog adhesion promoter, and others that downright hate it. It certainly doesn't seem very clear-cut.

86IROC112

I'm mostly concerned with reassembly. The front spoiler and rear bumper cover in particular are very flimsy or "bendy" if that's a word..

Jorlain

iTrader: (4)

If you're concerned, add a flex agent. It's not very expensive in the grand scheme of things. I've heard good things about both SEM and Bulldog if you're using urethane.

Tibo

iTrader: (15)

Only piece you could really argue for flex additive is the chin spoiler. The thing is a noodle when not mounted. The bumpers are fine as long as you use caution when handling them. As a side, my chin spoiler without flex additive after I sprayed primer bent 90* when the paint cracked.

Mirror Image

iTrader: (2)

Strip it all the way down then you will need a plastic cleaner not a wax and grease remover this will only make things worse then you will need a adhesion promoter like bulldog then i would use flex additive for assembly