Rorie

Active Member
Rebuilding my defender 90 and looking at insulation options (noise mainly).

I took out some dance matting from the inside of my cab, around the seat box, but there wasn't anything on the bulkhead.

I've read a LOAD of threads and seen a load of products available at a huge spectrum of prices - foam, foil, flatmat, dynamat, NK etc.

I have seen some poor reviews on NK mats, but other than that, not got a clue what to buy! I want to make sure what ever i put in isn't going to soak up water, especially if i put it external on my bulkhead.

So; would appreciate any feedback to what you put in yours and if its made any difference!

Thanks
 
My system so far has made a massive difference and I'm only half way through it. I am however almost as tight as a Scotsman. Obviously not in the same league as a Yorkshire Tyke but careful with my spends. :p
If you go the Dynamat rout be prepared to be a little disappointed. That is unless you double it up and cover 99.9% of everything which is going to cost a remortgage. Not bad for a car but I feel a trattor is a little too much for it.
I set out to 1, reduce the noise entering the vehicule and 2, stop the noise that does bouncing around the cab so I hear it twice and thrice over.
Your going to have to cover everything. If you leave 10% uncovered it wont mean the noise will reduce by 90%. Thick EVA foam is belting at reducing noise against its cost. The lock together dance/yoga mat is very good indeed if fitted properly and by proper I mean completely. It needs to be bonded to the steel with high temp contact spray adhesive and superglued at the joins and edges. Done this way 10mm is more than enough. I even cut circles out of it for access to screws and nuts but put the circles back in with a dab of low tack adhesive. A little can be cut out of the back to allow room for bolt heads ect.
Mostly its down to quality of fitting. In areas that have several defense layers including plywood lining,flashband (to reduce drumming), foam backed vinyl, I have used 10mm camping bed mat. Its better at bending to shapes as its a little lighter and is foil backed to aid insulation.
Once the noise is in the cab with you (and your going to get some) your going to need something to absorb it quickly. Carpet, foam, crushed velvet curtains............. Whatever dings your dong, but that sound has to be deadened.
Take the ceiling in my series diesel. It was the first to get the treatment;
Noise reduction first
Strips of 100mm cheap unbranded flashband layed randomly on central flat areas with gaps between strips. Every metal panel will at some point match its resonance to vibrations from the engine. Thats when it goes off like a guitar string, just not as pretty. Flashband reduces this.
10mm EVA foil backed camping mat HMP (brush on, its stronger) contact glued over the top with foil inwards.
Then absorbing layers
18mm upholsterers scrim foam HMP spray contact glued over the top with the scrim surface inward.
Man made faux shammy leather vinyl spray glued on top to finish. You could use any head lining type absorbent finish.
Just this made a noticeable difference

The glass alone will let noise in but any bare metal, even if not on the outside, will transfer noise and needs covering, even behind the dash.

My footwells will have a 3mm layer of solid rubber matting glued to the metal. Then EVA foam. Then a sheet of 4mm plywood to regain rigidity, then a bespoke carpet and finally a molded rubber foot mat for protection and ease of cleaning. Tactfully purchased and all done by my own fair hand the whole thing will be half the price of a self adhesive, expensively marketed and pretty useless, fancy named underfelt...........;)

Ear defenders are a cheaper option :p
 
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Rubber mat, foam, plywood, carpet.....
I'm surprised you can still get in it. I stripped all the matting out of my 90, nothing but a rust trap. The noise is part of the experience :)
 
Open cell foam. Rubbish. The pictures on the website look amateurish.

The noise stops conversation and renders the radio useless. There are other benefits.
 
I used silent coat on everything but the floors , on them I used Texal it was all from the sound deadening shop then carpet on top. Mines a 110 200tdi it's not silent in there now but you can talk without shouting and you can here the radio , used some 20 mm stuff from car builders web site under bonnet .
cheers Ian
 
"The noise stops conversation and renders the radio useless" I discovered Meatloaf's Bat out of Hell in this way. It was the only thing I could hear above my Perkins 3.403!
 
Keeps passengers quiet and the rubbish on the radio is not worth listening to. I was thinking of removing the radio but that would leave a hole in the dash :)
 
Rubber mat, foam, plywood, carpet.....
I'm surprised you can still get in it. I stripped all the matting out of my 90, nothing but a rust trap. The noise is part of the experience :)
That's coz your common. :p:p:p

I didn't say do it. I merely recommend it if you seek tranquility. I of course made the thing watertight first but I don't wade. If you do, stick to EVA foam only. :D
 
Not been here long and a bit nervous about having posted a few things I know little about, but here is my observation:

I built a caravanette out of an old Commer van. They rust anyway, but condensation held in by the soundproofing was what eventually caused its demise. It rusted from he inside out. The before my time soundproofing looked like a combination of tar and carpet felt.

My second 110 seemed to be previously owned by a postman based in the highlands of Scotland. It came complete with a home made wooden bed frame in the back. There were signs that condensation had been active in there too. I made a decision - no sound treatment even though it was much more pleasant to drive when piled high with clothing, lifejackets etc in both front and back.
 
My 110 doesn't leak it just took time and patience working my way though the leaks, sorting them.

If you have a van bodied defender fit a partition, that cuts a lot of noise from the back.
I've covered all interior metal surfaces with flashing tape, all the floors with Eva closed cell foam And the front has the wright system rubber mat.
The walls and roof of the van body are flash banded, Eva foamed, then clad with wood.
Conversation is easy, as is listening to the radio, and it's got a 200tdi !!!
 
Disposable ear plugs or good quality ear defenders and counter water leakage with divers wet suit.:p:p:p:p:p:p:p:D:D:D:D;) Not forgetting a woolly hat and gloves for winter.:rolleyes: Otherwise you are gay.o_O
 

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