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mumsie53
United Kingdom
68 Posts |
 Posted - 06 Sep 2011 : 16:31:14
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Hi there, Could anyone please recommend the best sealant for rebedding deck fittings.... we have a few loose bits and are looking at making everything watertight before winter comes
thanks
Pam javascript:insertsmilie(' ')
"growing old is compulsory, growing up however, is purely optional" |
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Deano
United Kingdom
1843 Posts |
Posted - 06 Sep 2011 : 18:07:49
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Have a read of this, lots of fantastic advice ... http://www.pbase.com/mainecruising/boat_projects
I would choose mastic tape - get it from caravan shops or eBay. Just search for Mastic tape.
If you fancy something in a liquid form, consider Polysulphide sealant or Sikaflex. But never silicone.
Polysulphide is a sealant but Sikaflex is a glue. It depends if you want to take it apart again or not.
Mastic tape will last almost forever - Some on my boat is 45 years old and still in great shape!! It tends to work better if you can avoid turning the fixing screw when fitting . ie. it is held from both sides with nuts and bolts rather than screws.
Dean - Boating on the Great Ouse.
Freeman 30 "Silver Gem"
See the photos http://www.flickr.com/photos/54758027@N00/ |
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stratford4528
United Kingdom
414 Posts |
Posted - 06 Sep 2011 : 21:18:12
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| Deano why can,t Silicone be used |
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Deano
United Kingdom
1843 Posts |
Posted - 08 Sep 2011 : 21:09:16
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Lifted from another thread...
1, It is not the best thing for the job! It does not adhere well to the substrate and will separate leading to leaks.
2, It is not UV stabilised, OK in your bathroom, but not for outdoor use.
3, It is not over paintable. In fact the slightest trace of silicone and paint will lift. It is also impossible to remove all traces. So you will never be able to paint or successfully seal that component in the future.
There are products from Sika, 3M and others that solve all these problems. Some are adheasives and some are sealants. Choose wisely.
Above the waterline I would use something like Sikaflex 291 or butyl tape, below the waterline I use a Polysulphide sealant.
Dean - Boating on the Great Ouse.
Freeman 30 "Silver Gem"
See the photos http://www.flickr.com/photos/54758027@N00/ |
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mumsie53
United Kingdom
68 Posts |
Posted - 12 Sep 2011 : 09:56:29
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oh dear Deano, there is loads of translucent silicone all around the bases of all the pulpit fittings,it seems to have been the prev owners sealant of choice.... 1 of them drips a little (probably due to stress from a mishap on the journey home)..we intended to take the pulpit off, sand and clean the area and rebed the whole thing with new through bolts before winter using a recommended sealant (along with 3 wobbly cleats)..is there no way to get all traces of the pesky stuff off? :(
Pam
"growing old is compulsory, growing up however, is purely optional" |
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df
United Kingdom
5994 Posts |
Posted - 12 Sep 2011 : 10:17:09
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I think you can get a silicon sealant remover that disolves it now.
NBAS--The communal colostomy bag of the boating community.
Visit leomagill.co.uk |
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Deano
United Kingdom
1843 Posts |
Posted - 12 Sep 2011 : 18:31:13
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A good sanding and something like acetone will shift most of it.
Dean - Boating on the Great Ouse.
Freeman 30 "Silver Gem"
See the photos http://www.flickr.com/photos/54758027@N00/ |
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Topic |
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sealant
