88 Z28 Guy

iTrader: (1)

I have the 85-90 door ground f/x for my car. I had to repare them some with bondo but i was wondering if i had to add the flex agent into the paint for the ground f/x since they are fiberglass. Also the wing is fiber glass also do i have to add flex to it as well.

forace87iroc-z

I just finished up a 1987 iroc-z and yes i did put flex agent in the ground effects, mostly for the front spoilers but since i did that, i went ahead and put it in rest of ground f/x. Cant tell any diff in looks of rest of car. good luck

jay92,85,79

iTrader: (1)

I know with some lines of paint u don't have to add it.

forace87iroc-z

didnt have to add it, just did just in case of any flexing .

BAD91CamaroRS

From what I have learned with a lot of the newer paints you don't really need the flex additive because a lot of new paints flex enough. The only reason for the flex agent is for when your putting the parts on. I think its like something after 3 months it kinda dissapears.

branz28

I've noticed in alot of the more....Mainstream clears and enamels you don't have to add it. But the cheaper clears seem to require it still.

jay92,85,79

iTrader: (1)

I use SEM flex.

88 Z28 Guy

iTrader: (1)

Yea i just bought some Flexable filling puddy for my bumper from SEM. Ive never used their products before but im going to give it a shot.

2kflhr

iTrader: (1)

I had the front gfx refinished when I added the Z hood and blisters to my sons car and we used a flex agent. I wouldn't dare not add it to the front at a minimum. I can't see where it would be necessary for the door gfx though.