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Tiger



Member Since: 06 Jul 2012
Location: Wales
Posts: 2265
2004 Defender 110 Td5 CSW Java Black
Flashband vs Dynamat (cost benefit??)
Right so why is Dynamat so much better?

I've done a bit of a test and as far as I can see they pretty much do the same job?

I noticed that in My Disco3 door LR had used Flashband themselves.

Tests so far on Flashband

1. Heat it up and smell test.
Stuck it to a piece of steel aimed a small fan heater at it. Left it for a while, no smell.

2. Sticky test
Same metal and it's stuck like glue.

3. Resonance Test.
Seems to damp the panel resonance

4. Fire test.
Okay so it burns, but is Dynamat any better, butyl rubber burns quite well also

???

Just wondering why I shouldn't use it to reduce noise in my 110? (I know it doesn't actually block much sound and that both of them reduce panel drum etc.)
Post #302816 28th Jan 2014 1:03pm
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mk1collector



Member Since: 17 Sep 2009
Location: West Yorkshire
Posts: 6769
England 2004 Defender 110 Td5 CSW Bonatti Grey
In a defender you really won't notice any difference, but for motors more into spl competitions the supposed more developed compounds work better. It's like saying why use Pirelli tyre instead of hankook. I'd always thought that during a decent summer the smell from the flash band would be overpowering.
Post #302819 28th Jan 2014 1:10pm
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Tiger



Member Since: 06 Jul 2012
Location: Wales
Posts: 2265
2004 Defender 110 Td5 CSW Java Black
The Evostick one has no real smell even when heated. This surprised me also
Post #302820 28th Jan 2014 1:14pm
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Diablo



Member Since: 26 Oct 2011
Location: Basingstoke
Posts: 335
1984 Defender 90 200 Tdi SW Keswick Green
you're paying for the name.

I use Silent Coat as it is the same stuff, but a lot cheaper. No reason not to use flashband I guess, I just find SC easier to apply.
Post #302840 28th Jan 2014 2:19pm
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Tiger



Member Since: 06 Jul 2012
Location: Wales
Posts: 2265
2004 Defender 110 Td5 CSW Java Black
Silent Coat seems to be much cheaper
Post #302889 28th Jan 2014 5:38pm
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epictrail



Member Since: 20 Sep 2013
Location: High Wycombe
Posts: 395
United Kingdom 2004 Defender 110 Td5 HT Chawton White
If you use flashing it's best to use butyl flashing as it stays flexible and not bitumen flashing which doesn't. It worked great on the roof of my 110.
Post #302892 28th Jan 2014 5:50pm
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Tiger



Member Since: 06 Jul 2012
Location: Wales
Posts: 2265
2004 Defender 110 Td5 CSW Java Black
Interesting

http://www.ttforum.co.uk/forum/viewtopic.php?f=2&t=223817
Post #302906 28th Jan 2014 6:09pm
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epictrail



Member Since: 20 Sep 2013
Location: High Wycombe
Posts: 395
United Kingdom 2004 Defender 110 Td5 HT Chawton White
Yes I bought some from B & Q at 50% off Thumbs Up don't use the Evostick one though as thats Bitumen.

I also got some from Screwfix although it's not as thick but still works on door skins etc.

http://www.screwfix.com/p/sika-multiseal-b...-10m/94203
Post #302913 28th Jan 2014 6:20pm
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g-mack



Member Since: 07 Jan 2014
Location: northumberland
Posts: 1967
United Kingdom 
also i think its a wast of time and money dynamatting/flashing/silentcoating 100% of the car. always remember in my boy racer cosworth days many moons ago we used to only dynamat parts of the panels!!
reading up on it now, it seems nothing has changed.
im gonna use
silent coat bulk pack cut into 10" squares and placed around panels
http://www.deadening.co.uk/products/silent-coat-2mm-deadening-mat

then mass loaded vinyl
then closed cell foam
this is an all in one
http://www.deadening.co.uk/products/dodo-pro-barrier-mlv

than in the roof space and utility panels
this sound absorber
http://www.carinsulation.co.uk/product/adh...insulation

hopefully this will do the trick. My 109 thread

my youtube channel
Post #303035 28th Jan 2014 11:43pm
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mk1collector



Member Since: 17 Sep 2009
Location: West Yorkshire
Posts: 6769
England 2004 Defender 110 Td5 CSW Bonatti Grey
Dynamat and other similar products don't stop noise! They stop vibration, so if you have large areas of panels with no strengthening ribs it will vibrate/resonate with road noise, wind passing over panels etc... You will notice a difference by putting squares of sound deadening in the centre of these flat panels but I prefer overkill and chose to seal any gaps then completely cover with dynamat (or similar) then cover with closed cell foam to absorb road noise and insulate slightly then rubber matting, to again absorb more noise. But this may be seen as overkill in a defender Rolling with laughter

Ray
Post #303037 28th Jan 2014 11:57pm
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g-mack



Member Since: 07 Jan 2014
Location: northumberland
Posts: 1967
United Kingdom 
not overkill! we have a lot of noise to suppress Laughing My 109 thread

my youtube channel
Post #303041 29th Jan 2014 1:02am
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H3nry



Member Since: 08 Jan 2014
Location: Heathrow
Posts: 134
United Kingdom 
Any idea how much it'd cost to do 'full' dynamat for a defender 90 station wagon?
Post #303057 29th Jan 2014 9:01am
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Tiger



Member Since: 06 Jul 2012
Location: Wales
Posts: 2265
2004 Defender 110 Td5 CSW Java Black
I priced up a 110 at £550 to apply myself including doors
Post #303061 29th Jan 2014 9:10am
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g-mack



Member Since: 07 Jan 2014
Location: northumberland
Posts: 1967
United Kingdom 
mk1collector wrote:
Dynamat and other similar products don't stop noise! They stop vibration, so if you have large areas of panels with no strengthening ribs it will vibrate/resonate with road noise, wind passing over panels etc... You will notice a difference by putting squares of sound deadening in the centre of these flat panels but I prefer overkill and chose to seal any gaps then completely cover with dynamat (or similar) then cover with closed cell foam to absorb road noise and insulate slightly then rubber matting, to again absorb more noise. But this may be seen as overkill in a defender Rolling with laughter

Ray


did you see/hear a marked improvement? My 109 thread

my youtube channel
Post #303093 29th Jan 2014 12:18pm
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Marky Boy



Member Since: 25 Oct 2013
Location: Maidenhead
Posts: 96
United Kingdom 
Hi, I have just Silent Coated the load area of my 110 and then stuck on the 6mm foam stuff they also sell.
I used 6 sheets of silent coat over the main floor area (working on the 50% or more coverage rule) and completely covered the wheel box sides and tops.

A good long motorway trip yesterday proved the noise from the load area is definitely reduced, I am now waiting for my acoustic mat to finish the job and then work at reducing the noise from the lump in the front !

I will be using silent coat and the foam on the floors / bulkheads (as far as I can get without removing loads of stuff) and silent coat for inside the doors and under the bonnet. All up it will probably cost £250 to do the whole job

Sorry the £250 is without the cost of the Exmoor Acoustic mat and rubber front floor mats......

Last edited by Marky Boy on 29th Jan 2014 1:21pm. Edited 1 time in total
Post #303104 29th Jan 2014 1:08pm
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