Adhesion Promoter interior plastic
- Thread starter Say08
- Start date
Yes sand the plastic first. You need a solid surface so get rid of any flaking or loose particles. Especially with old interior plastic the surface will be decayed from the sun. I use Bulldog Adhesion promoter but SPI should be fine. Follow the directions as AP have kind of fallen out of favor as the regular paints get more flexible. Unless I have bare plastic showing on bumper covers I no longer use AP but on interior plastics I still use AP.
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Chris_Hamilton
Trying to be the best me, I can be
Sanding textured or grained plastic will ruin it. Clean it well, you can use scuff stuff and a grey scotch brite very lightly but you need to be careful.
Ad-Pro is for adhesion not flexibility.
For those Mustang panels they should be bare plastic that is dyed/colored. They were not painted. Clean the panels well. Like I said above a grey scotch brite and scuff stuff used very lightly works well. Or Dawn and a grey scotch brite. Then use SPI 700 W&G remover and wipe everything down like you would an exterior panel you were going to paint. Use a dedicated paint prep wipe, never use microfiber cloths. Apply the Ad-Pro per instructions and proceed with your color coat. Read the instructions in the Tech Manual as well.
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Yes that's true but it really depends what you have to work with? I am almost always working on things that are so old that the the vinyl pattern on the plastic (If there is one) is the least of my worries because I just can't get another part. Plus the majority of my interior plastic usually require repairs of some kind and I regularly have to splice two parts together to make one good one or at least to get a usable part. Not a fan of plastic in general because it just does not last.
But you are right scotch brite would a better first choice as it's much gentler to the surface. Without seeing the level of decay of your plastic it's hard to say. I usually have to fall back to sanding to get a surface I want to work with.
Ps; Thanks for posting Chris! I wanted to say your forum picture ALWAYS get's my interest and I don't know the story behind that picture or even IF there is a story but that's a classic!
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But you are right scotch brite would a better first choice as it's much gentler to the surface. Without seeing the level of decay of your plastic it's hard to say. I usually have to fall back to sanding to get a surface I want to work with.
Ps; Thanks for posting Chris! I wanted to say your forum picture ALWAYS get's my interest and I don't know the story behind that picture or even IF there is a story but that's a classic!
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Chris_Hamilton
Trying to be the best me, I can be
No story.
Just a girl holding a fish (hard to spot for obvious reasons) Made me laugh when I saw it so thought it would be a funny avatar. Who doesn't love a girl in a bikini? 