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Author Topic: Sound proofing / deadening recommendations?  (Read 1033 times)
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DELTONA
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« on: 29 October, 2019, 05:13:38 PM »

Hi, with all the various types of sound proofing/deadening material out there its a mine field. Mine has pretty much dissolved and needs replacing therefore I would prefer to go on a recommendation that somebody on here has used on their Fulvia and found it to be good. Any advice much appreciated.
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1993 LANCIA HF integrale | 1969 LANCIA Fulvia Coupe 1.3 Rallye S | 1972 FIAT 695 Elaborazione ABARTH | 1982 FIAT 127 1300GT | 2005 Alfa Romeo 147 GTA | 2010 Alfa Romeo 159ti TBI
lancialulu
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« Reply #1 on: 29 October, 2019, 05:35:58 PM »

What!!! Cut out that beautiful sound a Fulvia makes?Huh??
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Its not the winning but taking part! or is it taking apart?
1955 Aurelia B12
1967 Flavia Vignale iniezione
1967 Fulvia 1.3HFR
1972 Fulvia 1600HF
1972 Fulvia 1600HF
1972 1600 Fulvia Sport
1979 2500 Gamma Coupe
1988 Delta 1.6GTi
1998 Zeta
fay66
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« Reply #2 on: 29 October, 2019, 07:38:41 PM »

What!!! Cut out that beautiful sound a Fulvia makes?Huh??

+1
Brian
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Own 1966 Fulvia 2C Berlina since 1997, back on road 11-1999.Known as "Fay"
1999 Suzuki Wagon R+ GL, now my daughters
2006 Renault Megane 1 5 Dci Sports Tourer
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Caracad
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Posts: 116



« Reply #3 on: 06 November, 2019, 08:49:46 PM »

Well you can have too much of a good thing.
I like to soundproof my old cars, often because the old stuff is rotten.

It is very difficult to find proper stuff that works. However it can be done.  noise reduction has to be tackled  in three ways.

1. Damping. Material applied directly to metal panels. Floor, bulkhead etc, to damp out the steel itself.
                   For this I use a proprietary self adhesive material like Dynamat. No need to cover the whole       surface, just a piece in the middle of the panel should do.
2. Sound absorption. This reduces airborne noise and is normally felt or foam. OEMs now use very lightweight fleece-like material. Hard to get hold of but good. Failing that closed cell soft foam works.
3. Finally a barrier. This is a heavy layer that blocks noise. Bitumen type material used to be common, but OEMs now use more of a rubber or EPDM Sheet.

All this stuff is available through eBay and should be applied in the order listed. Before you do any of this first check that you bulkhead is sealed. Most old cars have loose or missing grommets. These can be replaced or packed with some sort of sealant, or even Bluetac.
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frankxhv773t
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« Reply #4 on: 07 November, 2019, 04:35:02 PM »

Dynamat seems to be much used by professional restorers from what I can see.
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nthomas1
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« Reply #5 on: 07 November, 2019, 05:06:52 PM »

I've been using Noico Black 80mil (2mm) Butyl Mat from Amazon.  Quite a bit less expensive than Dynamat but seems very similar and doesn't have the bold lettering which I (probably irrationally) don't like.  I've applied it to the roof of my car, and plan on using it on the floor and bulkheads.  It will be some time before I can comment on its effectiveness.


* IMG_8088 copy.JPG (926.39 KB, 1559x1169 - viewed 78 times.)
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Norm Thomas
Ormskirk, Lancashire

Own:
1973 Fulvia S2 Coupe
Various modern cars
Previous Lancias: S2 Coupe and S3 Coupe in late 1970s
Caracad
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« Reply #6 on: 08 November, 2019, 08:42:21 AM »

Dynamat is expensive. I think I found an alternative, but canít remember what it is.
Some stuff is just cheap bitumen like stuff that melts when it gets hot.
Proper stuff if more elastic. Hereís mine. Note I didnít use much as it was only to dampen the panels.



* E0D75417-9315-4D3D-A807-B8A9F524CC2F.jpeg (113.14 KB, 640x480 - viewed 242 times.)
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Caracad
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Posts: 116



« Reply #7 on: 08 November, 2019, 08:45:03 AM »

Another pic.


* 6E6D4BE1-B686-4C27-975F-1C97204A57BF.jpeg (105.21 KB, 640x480 - viewed 241 times.)

* 6766E202-E270-4E91-BA5D-DA8401EC36D7.jpeg (99.45 KB, 640x480 - viewed 234 times.)
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frankxhv773t
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« Reply #8 on: 09 November, 2019, 10:28:27 AM »

That Amazon stuff looks very much like the original sound deadening on more modern Lancias.
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BlueKSO
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Posts: 27


« Reply #9 on: 09 November, 2019, 04:36:26 PM »

Whatever adhesive is used for fixing the sound proofing/deadening to the roof or boot panels, make sure it is heat resistant.  Otherwise, in respect of the roof lining, youíll be wearing it.  Both roof and boot lid get extremely hot in the summer when the car is parked up.

Cheers,  Peter
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