Fiberglassing a foam spoiler?

[RobertK]

sand it, prime it sand it, paint it with flex agents in both primer and paint, you'll be good for 2-3 years depending on the quailty of the job

Please excuse my ignorance but what are "flex agents"?

[Jand3rson]

Please excuse my ignorance but what are "flex agents"?

An product that is added to paint to prevent cracking of the paint when applied to a semi-rigid object, like a foam or flexible hard rubber spoiler. It makes the paint so that it doesn't harden as much when it dries, so it has some give to it.

[RobertK]

An product that is added to paint to prevent cracking of the paint when applied to a semi-rigid object, like a foam or flexible hard rubber spoiler. It makes the paint so that it doesn't harden as much when it dries, so it has some give to it.

That makes sense. Where is the best place to pick this stuff up or is it just an additive for the paint itself?

[rs4pro3]

Krylon Fusion at your local auto parts store.

[NC325iC]

... please no

[AndrewBird]

Krylon Fusion SUCKS. Get the correct paint at your local auto parts store.

Edited for correctness.

[rs4pro3]

I've used it on multiple items with no problems, painted my sideskirts, and trunk spoiler with it, they both held up perfectly.