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Old 23 May 2008, 13:17   #11
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Looks like the rot is in the position of one of your seat pods - was there anything caustic/nasty stored inside the pod?

As JW says - rip it out and fit a new deck - check the below deck structures, while you're at it - big job, but should be good in the end. Are you repairing it yourself?
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Old 25 May 2008, 06:16   #12
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Quote:
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There would be a lot of fungus there if it was true dry-rot. Looks like a clasic case of a general brown rot (wet rot) which has now dried out somewhat.
You are right. No sign of any fungus. There is a slight "mushroom" smell, but that is all. The strange thing is that the bilge was full of water the day before I opend it all up. (I had forgotten to taken the bung out last back end.) The underside of the deck was wet, but only on the surface. If the resin seal on the underside had failed the whole lot would have been sodden. I suspect the water had been getting in from above and not been able to drain out. This was probably through the access hatch for the fuel tank sender between the seats.

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Looks like the rot is in the position of one of your seat pods - was there anything caustic/nasty stored inside the pod?
Nope.
There is a 2-3mm GRP sheathing over the top surface, which is/was still sound.

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As JW says - rip it out and fit a new deck - check the below deck structures, while you're at it - big job, but should be good in the end. Are you repairing it yourself?
Oh yes.
There is no point in patching it. Somewhere else may be close to going. As I said there are some well needed mods that will get done at the same time.
I intend to bore you lot rigid over the next few weeks/months/years as I get on with it.
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Old 28 May 2008, 05:31   #13
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There would be a lot of fungus there if it was true dry-rot.
Erin. Like this?
This was a bit of 2" x 2" deck bearer.
I have found quite a lot of the white stuff on the cables under the deck.
Perhaps it is time to move the boat away from the house.
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Old 28 May 2008, 05:37   #14
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Mark, how old is your boat?
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Old 28 May 2008, 11:24   #15
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Tim
I think it is 1996-7.
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Old 30 May 2008, 04:56   #16
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I think I have uncovered all the soft bits.
The console is stripped, seats removed and most of the spongy bits pulled out.
I removed the seats by cutting round them with a hole saw, chain drilling through the laminate sheath and then levering them out with a layer of glass still attached underneath. A 2" bolster and a crowbar worked around the edges unsticks the sheath from the ply.

Hopefully the console will come out in a similar way.

1) The extent of the rot.
2) Minimalist loft living anyone?
3) More white fluff.
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Old 30 May 2008, 06:27   #17
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Tough luck Mark - you have my sympathies . As you say though - may turn out to be a silver lining to the cloud as you'll get the layout you really want. Do keep the photos coming - very informative!
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Old 30 May 2008, 06:53   #18
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Mark, it may be worth cleaning the hull with a fungicide before you put new wood near it. You wouldn't want those nasty little spores getting a hold of your new wood.

From the dim and distant past, I seem to remember from my woodwork lessons that dry rot mycelia and spores will penetrate anything they can within many feet of the obvious damage.

Anyway, I'm sure it'll be good when you're done.
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Old 30 May 2008, 08:32   #19
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Quote:
Originally Posted by Mark Halliday View Post
Erin. Like this?
This was a bit of 2" x 2" deck bearer.
I have found quite a lot of the white stuff on the cables under the deck.
Perhaps it is time to move the boat away from the house.
Yep that could be dry rot. If so the white growth will go yellow once open to daylight. If not then it could be boring old 'cellar fungus' which is just a wet rot so less likely to spread than dry rot can.

And JW is correct. Dry rot can spread. Wet rot only lives on wet timber, so will die if teh source of water is removed. Dry rot will send its tendrils out to find water and transfer it to dry timber so it can keep on munching. I wouldn't have thought either would be too fond of sea water, so it must be rain saturation thats casued the prob.
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Old 02 June 2008, 05:21   #20
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OK
The deck is now clear. I am getting to like the space. Perhaps real teak decks? And to make up the budget shortfall, a deck char and tiller steering.
I had to resort to a 4" bolster and lump hammer to remove the console. Fortunatly I managed not to damage the console too much.
Next job is to remove the sound floor which may be the hardest part. That will be a job for my trusty reciprocating saw. I am trying to keep the dust, and the itching, down by using low speed cutting tools.
The aft end of the deck was one bit of 10' x 5' x 1/2" ply. I am not sure you can get 10 x 5 sheets of 18mm (3/4"), so I may have to stick with 1/2" or go for 3 sheets of 8 x 4.

Erin & JW.
Thanks for the tips. I am watching the colour of the fluff.
When the fuel tank is out I will jetwash the inside of the hull and slosh loads of Armillatox around, before putting anything back.
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