 | Home > Maintenance & Modifications > Soundproofing/de-resonance/insulating the roof |
 
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| mk1collector Member Since: 17 Sep 2009 Location: West Yorkshire Posts: 6769   
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Your probably right, no point in doing the biggest flattest panel on the vehicle that happens to be very close to your ears
 Ray
My build thread http://www.defender2.net/forum/topic17615.html |
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11th Nov 2016 1:14pm |
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| Stacey007 Member Since: 25 Sep 2015 Location: Cheshire Posts: 3745 
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^ Biggest difference in mine I noticed was the Seat box's and inside them.
The the doors, as they sound more solid when you close them. Interesting if I leave the roof, little difference? With what I have done it does make a difference up to 40mph easy. At motorway 60mph plus hard to tell as easy? Maybe rather than the roof I should try something under the bonnet. |
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11th Nov 2016 2:08pm |
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| Lew-M Member Since: 04 Apr 2016 Location: North West Posts: 95 
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I can only speak of the evoque, but this has a large deadener pad fitted to the roof, also most panels in the car have a section of anti-resonation material sprayed onto them to reduce drum. As has been mentioned, it doesn't need to be full coverage, a patch in the centre will sort it mostly, then foam can do the rest! One word of possible caution, I had issue with tracker signal and the use of butile/foil insulation in the front of my 90 cab, resulting in me taking off a lot of the insulation, not a fun job! Obviously there is an issue with the signal reflecting off the foil?
Cheers, Lewis |
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11th Nov 2016 2:08pm |
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| mse Member Since: 06 Apr 2008 Location: UK Posts: 5035 
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Yes the rubber pad (used to be on the defender doors i last owned) are there on many many cars, stops the panel vibration/rattle/tinny noise - but isnt sound proofing -the front section of the defender roof would probably lend itself to that more than the rear.
Of course, all the land rovers with a panoramic roof, you wont see that either - i didnt think our evoque coupe had anything in the roof, but im not going to remove the headlining to check...ill have to look next time im around one! But like i say soundproofing and panel resonance are different Mike Last edited by mse on 11th Nov 2016 2:34pm. Edited 1 time in total |
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11th Nov 2016 2:26pm |
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| mse Member Since: 06 Apr 2008 Location: UK Posts: 5035
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duplicate Mike
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11th Nov 2016 2:33pm |
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| Lew-M Member Since: 04 Apr 2016 Location: North West Posts: 95
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Yeh I wouldn't go pulling the headliner down, they like to crease if you even look at them wrong
 as well as the deadener pad, later models actually have a small mass damper fitted to the rear of the roof also. Like you say though this is all focused on resonance, there is little to no traditional sound insulation in the car, it's mostly focused around the trim parts, of which our defenders have a lack of in comparison!
Cheers, Lew |
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11th Nov 2016 3:06pm |
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| Grenadier Member Since: 23 Jul 2014 Location: The foot of Mont Blanc... Posts: 5804  
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Must say, this is something I considered. Not whether I'd put any SC on the roof panels, but why (when you watch the SC demo video ) you'd bother doing the whole roof. The piece in the video cannot account for more than 20% of the panel coverage, so why plaster the whole roof in the stuff? My own counter arguement is that with the foil backing there must be some Cold/UV benefits? I've bought enough for the whole roof of my DC and will do it, but it does make me wonder. Likewise on the door panels. For sound in the roof I shall be using a light closed cell foam, and for the doors, if there's space, some ply. Floor will be covered in SC and Insulator matting. I start in one hours time, get a little bit done before the rugby  Monsieur Le Grenadier
I've not been everywhere, but it's on my list..... 2011 Puma 110DC - Corris Grey |
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12th Nov 2016 9:15am |
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| Lew-M Member Since: 04 Apr 2016 Location: North West Posts: 95
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Why not have a quick experiment on the doors covering one entirely and then another with a section around the centre of the panel or strategically placed. Then a simple slam test to see how they sound?may be interesting and informative for others looking to do the same?
Cheers, Lew |
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12th Nov 2016 9:25am |
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| mse Member Since: 06 Apr 2008 Location: UK Posts: 5035
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The only reason i covered most of the floor area was to make it even for the mat/carpet - otherwise im not sure i would have bothered
At the end of the day no matter how much you cover, the glass isnt the range rover double glazed, doors dont seal properly, posts arent that accessible, so you will only get so much positive benefit. Mike |
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12th Nov 2016 9:29am |
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| BuckBlu110 Member Since: 19 Apr 2014 Location: in the pub Posts: 712 
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Ok perhaps I used the wrong terminology, instead of using soundproofing I should have used de-resonance and insulation. I can however confirm, after just done a 300 mile trip, it makes a big difference, really has cut down the resonance/booming and holds the warmth better. I had enough both the SC and closed cell foam to do the foot wells front and back, which I think also has helped. As far as noise levels go, up to 60mph, it's very nearly as quiet as our 300 disco, which is what I was aiming for.
Going to concentrate on doing the bulkhead and surrounding area next to cut engine and gear box noise. I've already fitted a noise killer engine blanket, which has made quite a difference, so doing the bulkhead and inside the dash should make it a lot quieter. |
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12th Nov 2016 9:52am |
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| mk1collector Member Since: 17 Sep 2009 Location: West Yorkshire Posts: 6769
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Doing the bulkhead won't make as big of a difference with the sound deadening as there are lots of angles and braces, so not as much resonance. The ccf will make a difference and I'd still add some sound deadening anyway. As for everyone saying you only need a small square in the middle of the panel, this will make a big difference to resonance but coming from a car stereo background, the more mass you add the less noticable the resonance is, so I feel a full covering is best in a vehicle with large flat panels. Ray
My build thread http://www.defender2.net/forum/topic17615.html |
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12th Nov 2016 11:09am |
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| BuckBlu110 Member Since: 19 Apr 2014 Location: in the pub Posts: 712
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Agreed, full coverage may not be necessary, but sure does the job and helps. I doubt I'll use the SC on behind the dash, only on the larger flatter bits of the bulkhead, which there are few, and as you say, foam will do the coverage every where else under there. I'm thinking Closed cell on the bulkhead and open cell on the inside of the dash where no water can get at it and it isn't going to affect anything important.
Last edited by BuckBlu110 on 13th Nov 2016 10:50pm. Edited 2 times in total |
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13th Nov 2016 1:32am |
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| Stiff1 Member Since: 09 Dec 2014 Location: Cornwall Posts: 595 
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Never think there is an area of the Defender that will not get wet...
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13th Nov 2016 6:51pm |
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| BuckBlu110 Member Since: 19 Apr 2014 Location: in the pub Posts: 712
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Mines leak free in that area so I'm not too worried
Any way, the stuff I've got my eye on is supposed to dry out very quickly and easily, but we'll see, I'll make my mind up the next time the dash is out. |
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13th Nov 2016 10:45pm |
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