View Full Version : Black Sealant stuff in doors
Nigeyboy 25 June 2003, 13:12 OK - I really do need help on this one
Having removed the plastic sheeting inside the door trim to get to fit my new speakers, the old black gungy sealant did not come off neatly. http://www.stopstart.freeserve.co.uk/smilie/2.gif
So, can I get replacement stuff and how much / where from OR is there an alternative solution?
Any suggestions gratefully received
Nigeyboy
greasemonkey 25 June 2003, 15:01 Having removed the plastic sheeting inside the door trim to get to fit my new speakers, the old black gungy sealant did not come off neatly.
Rarely does, although heating the vapor shield with a hair dryer prior to removal can make the job easier (for future reference!) ;)
If most of it's still there, odds are it can be re-used. However, if you want to replace/augment it, you can get mastic sealants from builders merchants/DIY stores. Failing that, some silicone sealant will do the job. Either way, a tube/cartridge of the stuff shouldn't cost much more than three or four quid.
[Edited by greasemonkey - 6/25/2003 3:05:09 PM]
chiark 25 June 2003, 15:03 You don't actually need that stuff IMHO. Looking at the door cards, they're plastic on the back which ain't going to rot in the water...
I've got rid of mine and put shedloads of dynamat on 'em ;)
greasemonkey 25 June 2003, 15:07 If the vapour shields are removed completely, wouldn't there be a greater tendency for car steaming up in wet weather?
David_Wallis 25 June 2003, 16:33 use silicone sealer or sikaflex (the latter will never come off)
petrol will probably clean existing stuff off..
David
chiark 25 June 2003, 16:35 Not steaming up yet mate. Besides the vapour shields have holes in them for various bits anyhow...
New To Scoob 25 June 2003, 17:48 Don't get the sikaflex stuff on your fingers takes for ever to get off, but as David W says will stick anything to everything.
vindaloo 25 June 2003, 18:30 I'm sure I read somewhere that some of the ingredients in silicone tube things aren't friendly to copper fittings (speaker voice-coils etc).
I think it was a 'how to build your bass enclosure' article in a mag. They recommended not using silicone or making sure it was all cured before fitting the speaker.
Vindaloo.
alcazar 25 June 2003, 18:39 Some brands of silicone sealant give off large quantities of acetic acid when they cure, which WILL attack copper.
Many don't now.
Alcazar
Nigeyboy 25 June 2003, 22:16 So then,
sealant seems to do the trick, but has anybody sourced directly the replacement black gungy stuff?
David_Wallis 26 June 2003, 12:34 its not copper it attacks that matters.. they attack the butyl (cant spell today) rubber surrounds on some speakers and subs..
it only gives this off when drying.. so once cured its fine...
if its for a sub box use decorators caulk instead.
David
chiark 26 June 2003, 12:46 You can spell today mate ;)
And it is the butyl rubber that you have to worry about, that's all... Once cured, silicone is more flexible and lasts longer than decorators caulk so I still use it. Just be aware of it, or use a speaker that has been treated to withstand the gas - JL Audio woofers have this treatment for sure, others do too
David_Wallis 26 June 2003, 16:18 i still wouldnt recommend it with JL as if you look on their installs pages they still say to wait for it to dry..
Besides...
It doesnt matter once its dry..
and after its dry..
paint the box three or four times on the inside with paint..
then trim.. then let spray glue dry.. then fit sub.. then
RUN THE SUB IN.
[Edited by David_Wallis - 6/26/2003 4:19:10 PM]
Nigeyboy 26 June 2003, 18:18 Black Gungy Stuff......Anybody??
http://www.stopstart.freeserve.co.uk/smilie/smokin.gif
greasemonkey 28 June 2003, 22:54 Told u up top Nige. ;)
Mastic sealant from your local DIY store, builders merchants or similar. Doesn't have to be black, seeing as nobody's gonna see it anyway...
Nigeyboy 29 June 2003, 08:48 Thx Greasmonkey
The thread got a bit teccy with talk of gases coroding rubber etc..
Perhaps one should refrain from farting during sex too!!
I've got the mastic hint, but I was just checking to see if anyone got the original black stuff
NB
greasemonkey 29 June 2003, 21:12 The original black stuff is just black mastic. If you bought it through a Subaru dealer though, you can bet it'd cost many times what you'd pay from the likes of B&Q.
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