Isolating a Foamie Trailer Body From Frame Vibration

[kipa]

I would not because it expands with great force, which makes keeping the surfaces flat difficult. That's why I recommended spray subfloor adhesive (oops, I see I wrote "underfloor" before)

Gorilla makes a non-expanding polyurethane. It's clear and holds the same without the foaming.

 

[philpom]

If you just wanna mount it, I built the floor, caulked, primed, and painted, then drilled 12 holes to match my HF 1720# trailer. Shot 100% silicon on the frame, layed on the floor, shot more silicon down each hole and bolted it tight. Looks almost new down there minus a little dirt. This was not meant to come off although it can. Stiff enough to jack up one corner with no flex.