11 replies to this topic

[Bodyjar]

Has anyone done this? In a sound deadening/sealing kind of way?

I have already deadened my doors, inner and outer skin, but was thinking, wouldn't fibreglassing the doors completely seal the door up a lot better? And hopefully make them solid as a rock aswell?

Any side effects to this?

[Maz]

Its very hard to fibreglass to a vertical surface, would be more trouble that its worth.

Also u'd have to leave the drainage holes unless u want the doors full of water.

If you have all the surface holes seaed with MDF i dont see how u could get much benifit from adding fibreglass. An extra layer of serenity or dynamat etc would do the same.

[InterCooL]

what if you actually needed to use the service holes for something in the future??
breaking through fibreglass would not be easy!

[MikeC]

Intercool I dont think he would be like 6 layers of FB, it'd be like 1 or 2 max and FB isn't that hard to break or even remove if you need to, its called power tools.

[XHELL]

Fibreglass doesn't adhere/bond to metal, if it did it would take long before it started coming away. Just think how many times you open and close the doors. Last thing you need is for the door skin to vibrate against the a loose section of fibre glass...

[Bodyjar]

Ahhh... thanks Chris, I didn't know FG didnt bond to metal...

[XHELL]

Yeah, there's a certain body kit place here in Brissy that still try's it (just ask TIGA how happy he was with is, LOL ). I know in Canada many many years ago they had a few cars that sealed their doors with FG, and apparently worked well, but these were PRO cars and I'm sure they spent many many hours in prep and r & d....

[Bodyjar]

Well what if you screwed it down in certain places?

[XHELL]

It will still come away, remember the metal door skin will flex (even expand in the sun etc), and I'm sure after time the glass would crack fro opening and closing the door. I thought about this ages ago, never did anything about it as would cost a mint, was to weld chicken wire close to the surface to act like reinforcing does in concrete, and then layer the FG through it... In terms of practicality the usual dampning materials will do the trick.

On another note, I have seen a FG enclosure built into the front quarter of a ute (the ones that have the small fixed window in the front quarter of the door) and worked well, doesn't really help you though. Northfield have mastered the art of fitting woofers into the floor, with a small enclosure built under the car (requires engineering approval though), way cool, ask Drew for some pics.

I just don't want you to do something you'll regret, cos I think it will be a bugger of a job to get the stuff out if it doesn't work...

[Shieldsy]

i imagine it's rather the same as using it to sound deaden a boot i have thought about it and would do it. only thing is that i compete in db drags every now and then i think this would dq me out of street.
if done correctly it would work. ppl have fibreglass there roof... such as the street a car that got dq'd.

[XHELL]

Not saying it would work, just pointing out that eventually it will go bad due to the amount a car flex's over time.....

[Rattlehead]

What about glassing the back of your door trim for extra strength - would that be beneficial?
I know my door trims could do with a bit of strength. I'm just worried the resin will go through into the vinyl and ruin it.