soundproofing and moisture?

[hipshaker]

i need to get some kind of soundproofing sorted, i was thinking of using something like dynamat (over the panel above the engine and nearby) ..... which i know is pretty pricey. anyone used it?

are there any issues with regard to moisture that might lead to rust?

or any other suggestions?

thanks.

 

[robins]

have a look here http://forum.earlybay.com/viewtopic.php?f=1&t=10451&p=96305&hilit=sound+proof#p96305" onclick="window.open(this.href);return false;
there is more if you search for them^^

 

[hipshaker]

yes, i did a quick search. didn't actually see anything by anyone who'd used dynamat though.

 

[robins]

a few have said the flash band roofing stuff is the same i think :? not used any myself mind.

rich

 

[vdub wannabe]

Hi there

I had a similar discussion on here a while back, can't find the thread link though, sorry.

Dynomat & dynomat extreme (thicker) are very good at sound insulation. It basically stops the 'drumming' of the panel usually caused by vibrations.

If you apply it correctly then there should be no chance of moisture getting underneath it. I used a wall paper roller to press down the edges.

I was'nt convinced of it until I used it in my VW Beetle Karmann convertible. Here is the link to the post I put up on Volkstorque:
http://www.volkstorque.co.uk/vt/mech-tech-questions-answers/47044-soundproofing.html" onclick="window.open(this.href);return false;

There is an alternative on Ebay called "E -dead ". Try looking for that.

 

[cotswoldiver]

This was some stuff I'm considering using, and the response I got when I asked about 'moisture' issues. I've attached a link to car audio, but if it doesn't work just search for Car Audio Direct Oxfordshire and it is listed in accessories under sound deadening in all sorts of pack sizes

Hi David

Second skin Damplifier is a butyl rubber based pad and will reduce panel noise significantly. There should be no moisture problems as a result of application, in fact the insulating properties of the pads will probably reduce any incidence of condensation.

Regards
Colin
Sales Dept
Car Audio Direct

http://www.caraudiodirect.co.uk/accessories-sound-deadening-c-73_72.html

 

[hipshaker]

thanks very much.

actually, i had a look at the damplifier stuff too as an option.

 

[noddy]

We use two methods for sound deadening at work, firstly is a stick on tar impregnated material which is for anti drumming and then we use a 20mm think dense foam for sound deadening, usually cabin side. Would not recommend foam in the engine bay unless your sure you can retain it securely

 

[hipshaker]

so, are you going to use this then ..... or have you used it?

does anyone have any thoughts about this compared to dynamat?

This was some stuff I'm considering using, and the response I got when I asked about 'moisture' issues. I've attached a link to car audio, but if it doesn't work just search for Car Audio Direct Oxfordshire and it is listed in accessories under sound deadening in all sorts of pack sizes

Hi David

Second skin Damplifier is a butyl rubber based pad and will reduce panel noise significantly. There should be no moisture problems as a result of application, in fact the insulating properties of the pads will probably reduce any incidence of condensation.

Regards
Colin
Sales Dept
Car Audio Direct

http://www.caraudiodirect.co.uk/accessories-sound-deadening-c-73_72.html

 

[Wannabay]

I used Noise Killer products - their barrier mat is same as dynamat as far as I can see
I laid the barrier mat in strips in the floor indentations over the top of the engine bay and down over the fire wall to the cargo floor, then I laid their rubberised sound barrier mat over the whole lot and continued it over the cargo floor
It's not cheap but it really has made a difference, esp with the new TT exhaust
I'll try to post some pics up over the w/e

 

[vdub wannabe]

these guys are good to have a chat with, they even send you samples if you ask nicely!

http://www.woolies-trim.co.uk/c-15-sound-deadening.aspx" onclick="window.open(this.href);return false;

 

[Wannabay]

here's some pics of my soundproofing attempt

first I cut up and laid strips of noisekiller barrier mat (same as dynamat) within the indentations so as not to raise the overall floor level

then noisekiller sound barrier mat - this is 5mm acoustic foam sandwiched between rubberised sheets

then the original hardboard back on top

and a (not very good) shot of all 3 layers

 

[hipshaker]

those pics are great thanks, sort of what i was assuming i would be doing. dynamat strips then a mat of some sort.