In a somewhat controversial move to most I expect, I am actually looking to ADD sound deadening to my Polo.
I've been looking at all sorts of stuff. I've ignored Dynamat and other usual expensive items and concentrated on searching for the same thing but unbranded basically.
I've come up with a few things;
1. Flash banding / Flashing repair tape (you may see references to it online by various brand names such as useal)
Basically bitumen backed aluminium finish and a few mm thick. Unsure of actual thickness or weight.
2. Closed cell adhesive backed foam. Lightweight (typically ~0.6kg/m2)
3. Some other kind of foam, think this is absorbent, so a waste of time as it'll be shit, wick moisture and rot.
4. Silent Coat. I kept ending up on Silent coat from all sorts of searches. Seems a good compromise of malleability / price / weight. So it should form around everything odd shaped (with the use of a roller from painting). Pretty much made up my mind on this but interested to hear others thoughts, if any? This is the particular auction;
http://www.ebay.co.uk/itm/Silent-Coat-2mm-30-Sheets-Pack-Car-Van-Deadening-Sound-Proofing-Damping-Mat-/151262792131?hash=item2337f709c3:g:ZjIAAOSwqu9VLm0D I reckon that should be enough to do a Polo (no idea how much I'll need). I'd rather have a consistent covering over everything, than the odd denser sheet stuck on here and there as I've had that on past cars (from prvious owners / factory) and could clearly see difference in paint colour on cold days, etc (where the panel absorbs heat fromthe car, but the insulated part doesn't. Looks weird and although maybe insignificant, stuff like that annoys me, haha.
5. There was another fabric kind of stuff but I've looked at so many on ebay I've forgotten what's what. It was white and looked like the absorbent pads you get for oil spills (obvously nothing like it, but to look at it reminded me of that stuff).
What are your thoughts? Ever done it? Anyone know the surface area of the inside of a Polo? Things to do and not do? I'll be doing everything, roof, panels, floor, maybe even get some new firewall stuff for the engine bay too. Overkill? Pointless? Why? Had a lot of VW's in the past that had ruined bulkheads from head, fine to look at but bend when pushed by a finger.