I have found a whole lot of threads talking about herculining the interior of the trucks. I know that just about everyone has said to remove the sound deadening material because you have to. I never saw why you should. I assumed that it wouldn't stick to it or something.

Now here's my situation and question.

I have just got all the nasty carpet out of my 4runner. This left me with a whole floorboard full of sound deadening and left over adhesive.

I am wondering if anyone has ever put the liner directly over all that stuff, because I have never seen anyone say that they did apply it directly and it didn't work.

I know that if you apply it to a painted surface, people use the POR 15 or equivalent to etch the surface so the herculiner has something to hold on to. I am figuring that if the sound deadening has a lot of tiny imperfections in it, and the adhesive is already stuck to the floor and it has tiny imperfections, that there should be plenty of "etched" surface material for the herculiner to stick to. I also figure that the left over adhesive isn't quite solid so it may be a kind of shock absorber.

Now this is just a crazy theory of mine. I have gathered just enough information from the other threads to determine that doing this is simply a bad idea and that no one has ever done this to see the potential "ill effects"
If someone could explain why I shouldn't do it that would be great.
Thanks, Sean

 

and just to be clear, I'm going to call the herculiner "hotline" during the week to hear it from them as well.

 

just leave it in there. Thats what was done on My 2000, with no ill effects.

 

really? Your not just saying that to screw with me are ya? I know you like to screw with people, just making sure

I'll have to call herculiner just to verify. I'll probably do it anyway though and just have some on hand for touch ups.

 

Nope, not pulling your leg.

See this thread for pics:

https://www.yotatech.com/forums/f2/j...runner-137967/

 

so there was no chipping anywhere? could you tell there was leftover adhesive?