underlay

Post by **steve4063** » Sun May 06, 2007 2:45 pm

whats the best stuff to use to put under the carpets????????

Post by **jonathon** » Mon May 07, 2007 9:13 pm

Are you after sound deadening on a buget or performance. PM me for details please.

Post by **Peetee** » Mon May 07, 2007 9:16 pm

My friends in the carpet trade tell me the best sound insulation is achieved with 'rubber crumb' underlay. This has a black, rough side (the rubber crumb) and a fibrous underside, usually pinky-brown.
It's not cheap and a pain in the whatsit to cut and it's best to use a mask as the fibres float everywhere.
The easiest to use is the rubber underlay with thin nylon lattice layer binding it on one side. A doddle to cut but it does have a tendancy to fragment. One advantage however is that if you glue it rubber side up with PVA it will come off a lot easier than the fibrous stuff. This can save a huge amount of effort if you need to repair the floor.
My suggestion is to use the latter unless you have a modified 'noisy' car where maximum sound insulation is required.
I will be attempting to apply two layers of rubber crumb to the bulkhead of Albert. I'm not sure how I'm going to work round the little problem of securing it and the parcel shelf at the mo but.....

Post by **grahamt7** » Mon May 07, 2007 10:20 pm

Oooooh! Sound deadening - now there's an idea! There is nowt on my bulkhead, nowt under the carpet etc. How effective are these things?

Post by **RogerRust** » Tue May 08, 2007 5:49 am

Its well worth doing the bulkhead, but hard work. Also make sure ALL the holes are blocked and the rubber trim is fitted on the bulkhead at the back of the bonnet.

If the bulkhead felt is missing you will have a big hole behind the battery with only a piece of plastis sheet to keep the noise out.

Post by **ColinP** » Tue May 08, 2007 1:09 pm

It's really effective -

I used the offcuts from our last house carpet fitting (rubber crumb + fibre - from John Lewis about £8 per square metre).

It needed trimming with tin snips, but I can now listen to radio 4 interviews at 65 mph without increasing the radio volume to silly levels.

The problem I had was in persuading the carpets to fit back onto the "poppers" with the thickness of the underlay.

Colin

Post by **Peetee** » Tue May 08, 2007 5:29 pm

I used the offcuts from our last house carpet fitting (rubber crumb + fibre - from John Lewis about £8 per square metre

That's the very stuff. Made by a company called Jonelle. I pass rolls of it every day in the course of my work.

Post by **HarryMango** » Tue May 08, 2007 7:21 pm

RogerRust wrote:If the bulkhead felt is missing you will have a big hole behind the battery with only a piece of plastis sheet to keep the noise out.

There should be a big rubber plug in there.

Rog

Post by **steve4063** » Tue May 08, 2007 8:45 pm

There should be a big rubber plug in there.

Rog[/quote]

so where do u get one of these plugs then i never knew it was meant to have one all the 5 mogs i've had have never had one ???????

and i can't seem to find them on t6he usual suppliers sites.

i've got the 2 which stop the battery from banging against the bulk head

also with an update for the underlay i had a word with a frioend of a friend in the carpet trade.

he's suggested this blue underlay its like polysttyrene but its not its about 10mm thick and is waterproof and has sound proofing nqualities too!!!!!!

plus for 2metres x 1 metre which i've used half for the whole of the floor was only £5 is VERY cheap

i've put it in and will see how if feels and goes i will admit it does feel nice underfoot.

Post by **Peetee** » Tue May 08, 2007 9:50 pm

It may feel nice underfoot but as others have commented so far the only way to reduce sound levels is a comprehensive lining of ALL the problem areas.
If you want to put the effort in then you need to concentrate on the following areas in particular:
Bulkhead/footwell
Behind and under rear seat
Boot floor
Passenger side floor

Also ensure the seals are good on the doors.

Post by **NZJLY** » Wed May 09, 2007 10:18 am

Peetee wrote: I pass rolls of it every day in the course of my work.

There must be easier ways to get your daily fiber?

Sorry couldn't resist - I'll go and stand in the corner for a while

John

Post by **jonathon** » Wed May 09, 2007 11:28 am

Post by **ColinP** » Wed May 09, 2007 12:35 pm

I read the follow-up posts rather too quickly ...

I pass rolls of it every day in the course of my work.

then

There should be a big rubber plug in there.

Colin

Post by **HarryMango** » Wed May 09, 2007 5:42 pm

steve4063 wrote:so where do u get one of these plugs then i never knew it was meant to have one all the 5 mogs i've had have never had one ???????

and i can't seem to find them on t6he usual suppliers sites.

i've got the 2 which stop the battery from banging against the bulk head

They are only available 2nd hand if lucky !

Most seem to have been lost over the years.

Rog