Seam Sealer interior or exterior?

[01somta]

Should you use the seam sealer on the inside or outside joint? Or, seal as much on the interior as possible and then do the rest exteriorly or seal as much on the exterior and then do what you can't reach on the exterior seal on the interior? This is all undercarriage and trunk pan seams.

Thanks Dustin

[01somta]

What is the difference in a 2 part (lord fusor or similar) and a 1 part (fast n' firm or similar) seamler

[GMracer]

not sure on the difference, but I personally would seam seal both sides before paint. that's just how I do it.

[Musclerodz]

Fast-n-firm is old technology. You almost have to use parts sealers and special guns to get the good stuff anymore. I seal anywhere I don;t want water or debris to get to.

Mike

[01somta]

I am using a two part (fusor) on interior and ext.