sound proofing material - Rolls-Royce and Bentley Forums
 
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post #1 of 6 (permalink) Old 11-06-2019, 04:54 PM Thread Starter
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sound proofing material

Hi Folks


I think I've got shipwright's syndrome.


I want to replace the soundproofing material on the front engine bulkhead. The closest I've found so far are 3m sound deadening pads. I wondered if anyone knew of a better alternative.



https://www.napaonline.com/en/p/MMM08840


Geoff
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post #2 of 6 (permalink) Old Yesterday, 09:20 AM
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Geoff,


I have never been able to source that Jute/hessian backed rubber butyl sound deadening.


Even our famous Woolies Classic Trim specialist here in UK have nothing like it.


The 3M piece you pictured does look a bit thin and personally I hate the self adhesive type and always prefer using a limited amount sparingly of contact adhesive.


I did buy a large roll of open cell skinned automotive sound deadener from Amazon a few years back when we did an old RangeRover for a farmer converting to a Perkins diesel engine. It was not really expensive either but about 6mm-8mm thick.


Just a few things to be wary of.....avoid some products as the moment you press them the pressure point mark end up a permanent indentation and looks awful. Avoid anything too that has a an aluminium foil outer as that soon looks bad.


Given the shape of the original part and in its installation is sitting FLAT and held by some components so would not require much contact adhesive to keep it in place so personally I think I would buy a piece of hessian/jute and a piece of around 1.5mm thick flat rubber/butyl sheet. Use contact adhesive to glue the two together and you should end up something more like original. Just a thought.


However I will ask around as I know a few trim specialist and if the correct material is around I will find out............keeps me out of trouble.


I use ''Noisco'' products in the UK but again nothing quite like that original RR stuff. I think there is something called Delement in the US but have no memory recall at the moment. 3M is good stuff and also 5M..........search using the usual thesaurus word options like accoustic, dampening, insulation, deadening etc and do try direct on Amazon too.


All the best


Steve
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post #3 of 6 (permalink) Old Yesterday, 09:43 AM
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http://www.automobiletrim.com/boot-lining.html

Try this site. Also contact Welsh Jaguar in Ohio and Hirsch in Newark, NJ I have used Hardura over jute to replicate the original material.

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post #4 of 6 (permalink) Old Yesterday, 10:58 AM Thread Starter
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Hi Steve


Lots of great advice as always. It's useful to know the original was Jute/hessian backed rubber butyl.


You are right about the 3M product, it is thin - about 1/16". It can be doubled up (as specified by 3M) to make a layer the same thickness as the original. However, it doesn't look the same and I'm not comfortable with it, which is why I put up this query.


Plenty to be researching here, including making my own, as you have outlined and checking out the companies you specify.



Hi Wraithman


Many thanks for the company names and product references.



Regards


Geoff

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post #5 of 6 (permalink) Old Today, 02:08 AM
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Geoff,


Not much luck getting any information about availability of the original product.


It appears the hessian/jute was not glued onto the back but bonded during the manufacturing process and the pattern on the outer surface is just the roller marks.


I am no rubber/plastic compound expert but I must assume the hessian was just to give the material a 'tear/bend/form' strength property. I know I have a part lino floor in my garage and that is quite flexible material but the lino tiles I bought to put at bottom of kitchen cupboards would just break like biscuits if bent a little.


I like the look of the outer material and the surface pattern of that hardura that wraithman linked but I hate that hairy backing to work with.


Still waiting on a couple of old trimmer friends to offer up alternatives so will update if anything comes up.



Steve
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post #6 of 6 (permalink) Old Today, 08:52 AM
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Geoff,


No joy in UK with any trimmers, but some more ideas to put into google for you is.......reinforced rubber sheet....or.... reinforced EPDM sheet..........


I found this company but it is India


https://www.vhpolymers.net/rubber-sheets.html


However if you log into the site and scroll down to Rs300 ''reinforced rubber sheet'' near the bottom it has something that almost looks the same surface finish as the original RR and at $2 (Rs 300) a kilo even minimum order of 10kg works out cheap but delivery customs cost I don't know how it works for you.


However it does show products are available so you may find something in US if you look for polymer suppliers rather than trimmers.


The Jute/hessian is sandwiched inside and for me that is good as that furry felt backing on the hardura can act like a sponge when it gets wet.


I know you like to do things right and to look right so just thought it may be of interest.


All the best


Steve

Last edited by Steve E; Today at 08:57 AM.
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