Removing excess mastic (1 Viewer)

Apr 9, 2013
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I was renewing the mastic around my fridge vents yesterday using Sikaflex. Is there anything that I can use to dissolve excess smears of this mastic? It seems resistant to most solvents I've tried.

Tim
 

163phil

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It is! - Once it cures it's polymerised and will not dissolve. A sharp knife and care is your best bet.
 
Jan 4, 2012
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A plastic scraper dipped in white spirit moves it.
Thinners will remove smears--check that the paint is original first as thinners may attack after painted areas.

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mentaliss

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I was renewing the mastic around my fridge vents yesterday using Sikaflex. Is there anything that I can use to dissolve excess smears of this mastic? It seems resistant to most solvents I've tried.

Tim

I use Tec7 spray adhesive remover, true if the silicone has hardened its more difficult but as said here already a piece of plastic with a 'edge' helps
 

haganap

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probably a bit late now but might help other readers. when you over use it, wd40 is ace at removing it. Haven't tried it on dried mastick though.
 
Jan 28, 2008
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you can get silicon remover but its messy and could attack paint
when applying mastic invest in some big wipes from most building supplies outlets these remove un skinned mastic and can be used to shape the mastic

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timdownieuk
Apr 9, 2013
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you can get silicon remover but its messy and could attack paint
when applying mastic invest in some big wipes from most building supplies outlets these remove un skinned mastic and can be used to shape the mastic

I'm not sure what Sikaflex 512 is made of but I'm pretty sure it's not any kind of silicone.
 
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timdownieuk
Apr 9, 2013
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probably a bit late now but might help other readers. when you over use it, wd40 is ace at removing it. Haven't tried it on dried mastick though.

Ah, I've not tried that. I'll give it a go. Cheers.

Tim
 
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timdownieuk
Apr 9, 2013
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probably a bit late now but might help other readers. when you over use it, wd40 is ace at removing it. Haven't tried it on dried mastick though.

You're quite right, it's a bit late now. :Smile:

Mark 1 fingernail seems pretty good at removing what's left. I'll certainly be a bit more careful in future!

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Mel

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Oct 6, 2012
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A plastic scraper dipped in white spirit moves it.
Thinners will remove smears--check that the paint is original first as thinners may attack after painted areas.

Why will thinners attack new paint and not original?
I know its your job so I am not saying it cant just wondered why

Thanks

Mel
 

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