Ridder
new user
Reged: 02/06/2007
Posts: 2
Loc: Zeeland
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Hello all,
In the latest issue of CB I read (in the article about Sophie): "we set about stabilising the rot"
Can anyone tell me how I stabilise rot?
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alan006
regular
Reged: 07/06/2007
Posts: 635
Loc: Kent
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I assume they are talking about treating the wood with a product such as Cuprinol 5star which help stop the rot spreading. I think I've read on here that antifreeze contains a good anti-rot treatment.
As I say I have not read the article so I'm guessing.
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bazonbeleza
regular
Reged: 19/11/2005
Posts: 541
Loc: faro, portugal, & Liverpool fo...
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look at this from cfs supplies, a penetrating resin for unsound wood, reacts wih water in wood which cures the resin
http://www.cfsnet.co.uk/acatalog/CFS_Catalogue__Bonda_Wood_Hardener__526.html
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Nauticat sailors do it in comfort (and carpet slippers)
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jimminy
regular
Reged: 28/04/2004
Posts: 363
Loc: South Devon - River Dart
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Rot is basically a fungal attack on the wood, feeding on the starches in the fibres. So, once the fungus is there, with the spores, then it's there. Progressively the fungus weakens the integrity of the wood until its structure collapses. Products such as cuprinol 5 star simple arrest the attack by killing the fungi, and effectively making the wood poisonous to future attacks where treated. However, most treatments these days are water soluble, and will eventually wash out. So technically you can stabilise the situation. All rot fungi need water - but sometimes very little % moisture in the wood is necessary, and some nasties, such as dry rot, can fetch water via sending out very long strands to find it from a considerable distance away. Of course natural resins and oils help against rot because of repelling water. Rot is a whole subject in itself - just google dry rot and its an education!
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johnchampion
regular
Reged: 28/03/2005
Posts: 61
Loc: Bristol UK
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I tried the Bonda product but for me at least it was not a resounding success.
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Niander
regular
Reged: 25/06/2003
Posts: 362
Loc: Outer hebrides
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Glycol antifreeze and stop the rainwater getting in if its the roof
and plenty of ventilation to keep the moisture level down.
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oldharry
regular
Reged: 30/05/2001
Posts: 3613
Loc: North from the Nab about 10 mi...
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Glycol is claimed to be a succesful killer of rot spores, so preventing the rot from getting hold. It is also a reaswonable preservative. IIRC Mary Rose has been bathed in a specially formulated glycol based soltuion for the last 20 years to help stabilise her 400 year old timbers.
But they have been soaking her ever since she was raised 20+years ago, which highlights the point that it is virtually impossible to get any of the commercially available rot stabilisers far enough into the timber to actually do any good in na normal boat repair environment.
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If you cant fix it, get a bigger hammer...
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Seagreen
regular
Reged: 30/07/2005
Posts: 966
Loc: ked myself in the locker again...
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"If in doubt, cut it out".
I think various sources recommend 6" along the grain and 4" across it. Cut back to good wood, soak that in a fungicide, pref. not water based, then replace the wood, and cover in lots of paint - remember to not skimp on the undercoat. By using a petroleum spirit based fungicide, the enamel primers and top coat will bond into the new wood better.
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"Let Joy be unconfined!"
I'll get her chastity belt keys, then..
http://www.linesquall.co.uk
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Ridder
new user
Reged: 02/06/2007
Posts: 2
Loc: Zeeland
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Great, thanks for your help! I think I'm going to use the Cuprinol 5 star.
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Cuchilo
regular
Reged: 19/04/2003
Posts: 3637
Loc: London
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I thought we worked out ages ago that Glycol was just a carrier for other agents and Borates where the rot killer . 
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The honest man has nothing to fear .
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