Sound Proof Tire Well

[Husky]

I really wanted to sound proof my car as I went around. Here's my find:

 

Aeroflex:

- Out of stock (coming this weekend). Very cheap ($6-$8) per big piece but must fix it myself! How to fix??

 

Autobacs:

- Quoted me $1050 for four doors, firewall and floor.

 

Accumat:

- Went to a shop and was quoted $35 per piece (5 pieces for all doors of Mazda2) and $20 per door for workmanship. Total $255 for all doors. Reasonable?

 

Was told that I can sound proof the tire well with some german brand foam at $300. Effective? Better than sound proofing floor and firewall?

 

Would like to hear from you guys

 

P.S: Pls do ask me to buy ear plugs instead hor or blast the speakers till machiam disco like that

[Flanker]

may i know what type of foam used for sound proof the tyre well which cost $300 , what material they used , i too have a problem and looking for solution to reduce my tyre well noise.

[Husky]

Not sure leh. The boss of the shop told me it is some brand from Germany. Anyway, hoping that some bro from this forum has done Tire well sound proofing before and will enlighten us on this...

[Weiming]

Do a search for "soundproofing" in this forum. I think there have been some really good information provided by the bros here on how to go about it.

 

I recently carried out my own soundproofing project for a Renault Kangoo using bitumen sheets, Superlon foam and felt. Not sure of your vehicle's tire well but the Kangoo's rear wheel arch area is just bare metal so what I did was put 1 layer of bitumen to cover the whole area followed by a layer of 3/8" foam before wrapping it all in felt. Reduction of noise due to water splashing, small stones is really dramatic, I would hazard the noise is now 80% muted.

[Sam_meow]

hi, can i know where is the shop for the accumat

[Flanker]

how u apply all this , first layer Bituman , second layer foam and 3rd layer felt ??

what brand u using for the felt??

[Weiming]

Hi Flanker,

 

Yes you are correct in the sequence. What I did was to make sure the bare metal of the area to be worked on is clean (dirt and grease-free) using WD-40 and Windex before laying the bitumen pads over. On top of this layer, I used 3M spray adhesive to stick the Superlon onto the bitumen. Another layer of adhesive and I place the felt on top of this layer.

 

I have no idea what brand the felt is but I got it from an upholstery shop at Kallang Bahru mentioned to me by bro Maverick.

[Husky]

hi, can i know where is the shop for the accumat

 

Just look for this thread called "Thermal/Sound Insulation" under the ICE forum. There are addresses for other materials too

[Husky]

So many layers Is it safe?

 

Was thinking just buy Aeroflex self-adhesive and just stick it on.

[Weiming]

I think I quite underkill already. Think some people put 2 or 3 layers of bitumen and a thicker layer of foam.

 

Guess it depends on what you hope to achieve. Bearing in mind that my rear cabin is completely devoid of any soundproofing material, just acres of sheet metal, the process I went through really helped to quieten the whole cabin.

 

If you just use Aeroflex, may be quite expensive as I believe 1 roll is S$7.50 but you need at least 2 or 3 rolls to cover the wheel arches and they are quite thin so I am not sure how effective they are at filtering out noise.

 

The reason for using the bitumen is to damp the panels to lower resonance frequency so that there is less vibration sounds heard. The foam is to prevent outside noise from penetrating inside and also to prevent music from escaping out. The felt is just to hide the whole mess of bitumen+foam

[Flanker]

Hi weiming , forgot to ask u , why foam u are using and the bituman u are using ?

[Jiayong]

so how much did it cost u in all?

[Apollo]

my experience, find a friendly workshop on the weekend when they r not beezee. jack up the car. remove both front wheels and place aside.

 

remove weathershield also.

 

proceed to paste sound proofing material into wheel well. i've done it btwn 3- 6 layers. all cut in small pieces to jizsaw up everything into overlap. i'll pat onto the soundproof material just to b doubly sure it gives me a solid and not hollow sound.

 

cover back weather shield and restore back wheels.

 

--

2nd operation done months later.

 

adding insulflex onto the weathershield using adhensive.

 

in all, DIY cost me ($30 for bitumen), ($10 for insulflex), 1 cuppa for friendly workshop.

 

---

as afternote, I found that although sticking solid stuff to the well was effective, sound still permeate through. the reason as I gathered is that the weathershield is simply too close to the wheel, resulting in air being squeezed inside the well. and this build up against the weathershield, resulting in the resonance travelling into the car. this is esp so when the weathershield material is both thin and hard material. insulflex acts as a 1st barrier soft cell material to absorb the sound pressure fr the tyres before it permeates to the well.

 

results is highly satisfactory.

[Jetcool]

Bro Apollo, the adhesive you used to paste Insulflex to weathershield is contact glue? The Insulflex is the half " thickness type ?

[Apollo]

yup.. contact glue.

[Weiming]

Hi,

 

Using the bitumen roll that Maverick is selling, believe the brand is Grace. The foam is 3/4" Superlon.

[Weiming]

Material cost in total is S$300 and I still have half a roll of bitumen (to be used for do my front doors), spray adhesive and felt lefover.

[Flanker]

u gain much many percent in reduction of tyre noise, so the conclusion is just paste insuflex on the shield right , not need bituman ,please enlighten thanks as i need to DIY in few week times for my car.