Sound deadening

I seem to have alot of road noise in the cabin which is probably partly contributed by removing the rear seats. I am planning on installing a rear drawer system however, as I don't plan on it being easily removable, I wanted to do what I can underneath before I do it. One of the things I want to do is install sound deadener to make the Jimny a more comfortable (future) tourer.

We all know the Jimny hasn't got a good sound system nor is it designed for one so all I'm mainly after is reducing road noise, mainly in the rear. I don't want to spend hundreds of $$$'s and was only budgeting max of $100 (~£60) as I have more important things to purchase first.

Everywhere I look people have mixed opinions, the obvious general consensus is you get what you pay for (yes I know I'll probably get the same opinions here too). In general from what I read you need CLD tiles to stop the panels from resonating (more due to high powered/sound systems) and some vinyl to block the sound.

As I am doing this on the cheap, what I thought about was using a few of these from Jaycar followed by some carpet underlay or similar. Then I read about the paint on body deadener (again some say is good, others dont). Then the brain started working and I put 2 and 2 together and thought about applying a coat or 2 of the paint on deadener, then another layer as a form of glue for the underlay on the side panels.

And that is where I'm at. What are your thoughts? Or what would you do instead for a similar price?

You could use self adhesive lead flashing from a DIY shop - does a similar job to Dynamat at a fraction of the cost. GIven that the boot floor can be susceptible to rust the last thing I'd want to do is to glue underlay to it 'cos if it gets damp it will stay damp for a long time, and trapped moisture is rusts best friend.

Thats a fair point. Maybe if its only glued on the sides and not in corners or glued to the floor. Wouldn't it be the same for those putting deadener everywhere? Since vinyl is a material that 'sweats'. Wouldn't the first couple coats of deadener also protect the panels from rust? I'm more looking at deadening the wheel arches and the insides of the rear quarter panels. The boot floor already has deadener on it, as its a 07 model, and ill just be laying the underlay ontop. Ill certainly look into the flashing tho

I sound deadened the whole rear of a mitsubishi colt I had once. I used a layer of the dynamat stuff and then a layer of the foam sound insulation stuff. Dynamat is hugely expensive so I bought a big box of different brand from a car stereo place which was just as good but a third of the price. (think it was this caraudiosecurity.com/shop/product/products_id/12400.html obvious no good for you in Aus though)

I looked into the paint on stuff and although it seemed to get good reviews it looked like it was going to be very smelly and takes ages to dry (which is fine if you have somewhere safe to keep your car with the windows open but I didn't...)

The result was OK but it wasn't a huge difference if I'm honest.
Would it be worth will taking off the covers over the arches and just filling them with rags or loft insulation or something cheap to see if it makes any difference?

I'm into VW transporters, all the guys that convert to campers use the self adhesive lead flashing 'flashband' they call it, they put it everywhere, all over the floor, wheelarches, in the door panels etc. does make a lot of difference.

Gary

I've used products from StP (StandartPlast): stp-distribution.com/

They have a distributor in the UK. Cheaper than Dynamat and Hushmat, same quality in my opinion. Their Youtube channel has some useful instructions: www.youtube.com/STPDistribution (well, it's obvious that they'd want you to bullet-proof the car with all their products, but you can sort out what you need and what you don't).

I've done:
- rubberised foam over the plastic rear bits to stop them squeaking
- thick sponge in the rear for sound insulation
- bituminous self-adhesive plates over every metal sheet that could vibrate/buzz

You can see them here . After that, I noise-insulated the front floors, see it here .

Quite happy now, still have to do the doors and that's it - most quiet Jimny in the world :laugh: