Under-carpet Insulation?

[marty085]

So my NA filled with water (cabin and boot) due to there being no rain rail installed by previous owner.. thanks mate.

Pulled out all the carpets, it's all nearly dry now. A fair bit of the original under-carpet insulation material is in poor condition and now is a good time to replace it.

Advice needed:
1. What sorta shop can I get the same stuff from?
2. Are there any alternatives which provide the same level of noise and heat insulation but are lighter?
3. Should I just leave it out? Will noise/heat be that bad?

[lizard]

http://www.dynamat.com/


Should be able to get it a little cheaper on ebay

[Mr Morlock]

Automotive paint shops ie selling products will have some options.

[Dupain]

Get yourself a can of polystyrene foam and give the area underneath the carpart a good spray, gets into all te crannies and easy to do.

[lizard]

- Edit Okibi, forum etiquette 101, please don't quote the post directly above your own -




It also holds water and would be the best thing ever to promote rust

[Snowmotion]

These guys have all sorts of products for cars.
I got a roll of felt underlay that I used to insulate a van.

http://www.nolanuda.com.au/

[Mr Morlock]

you use the right product - felt is not a good idea at all. Its a car not a carpet at home. Go to auto body people and get the right advice. You can also have spray on or paint sound deadener as well- been used for decades. Whether you want to use it is another thing.

[Snowmotion]

- Edit Okibi, forum etiquette 101, please don't quote the post directly above your own -

Mr Mortlock... you should not jump to conclusions. Nolanuda supply Automotive underlay which is what I have used and still use.

[nbse2]

If your in Blakehurst, Department of Interior in Kogarah should be able to help. They have a variety of underlay. I have a spare piece of insulation. I'll pm you.

[Mr Morlock]

My point is that cars and eSpecially open top cars don't use felt underlays because they absorb water. Rust in floors thru wet underplays is something to avoid. There are a number of treatments for soundproofing and insulation that don't wick like felt or some other more traditional carpet underlays. Dynamat is one well known but there are others. I bought a sticky back insulation recently for a footwell and it's sold by the piece. I think the maker was bostik but maybe wrong however I buy automotive body items from an auto paint supplier and that runs to a wide range of body products though.

A bloke I was chatting to recently found rust in chassis rails ie a rwc guy examined the vehicle with a camera. The rust is hard to detect if people use spray on body insulation.

Nolan UDA is a supplier to automotive for example headlinings and slow motion may have a good product.

[Mr Morlock]

Correction read snowmotion

[marty085]

A place at revesby reckons that 10mm thick PE (polyethylene) foam will be good - closed cell doesn't hold water, and is decent for acoustic and thermal insulation.

Any reason why I shouldn't get some of this stuff?

[Mr Morlock]

Closed cell materials should be fine. Clarks carry a range of foams. There is an easy test for open compared to closed cell materials. 10mm is pretty thick.

[zephyrus17]

I installed Dynamat everywhere except for the extreme front leg space, and the firewall area. Didn't make a bit of difference, personally. Especially with a aftermarket exhaust, CAI, and driving with the roof down all the time...

[marty085]

Closed cell materials should be fine. Clarks carry a range of foams. There is an easy test for open compared to closed cell materials. 10mm is pretty thick.

Do you reckon 6mm would be better? I can get some of that at Department of the Interior tomorrow, but I actually thought that would be too thin...