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Sonny
United Kingdom
191 Posts |
 Posted - 11 Feb 2012 : 16:45:21
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has anyone any ideas in insulation in a norman, I would like to stop some of the condensation as it is pretty bad at the moment,I wondered if I could spray foam between the roof and the interior lining to help but any other ideas would help.
I dont have a power supply on my mooring so 12v is the only power and that wont run much for long.I need help please |
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adi-n-chez
United Kingdom
1980 Posts |
Posted - 13 Feb 2012 : 18:55:29
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Ventilation is a big thing to help stop condensation / damp
I can only presume you are using the boat & heating via the cooker or other propane / butane devices ?
Our boat is dry at the mo but I know if we sparked up the cooker condensation would be a problem in current temps.
Dry blown air heat is the only option to help avoid it (Eberspacher / propex etc)
Carpet lining helps, but I'm not a massive fan
Adi
Sewer Tubes ? I'd rather have a D**ncr*ft (Only Kidding) |
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ken cattell
United Kingdom
192 Posts |
Posted - 13 Feb 2012 : 20:33:23
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I can second Adis opinion on ventilation.
Ive installed a solar powered extract vent in the front cabin roof of my Conquest, just left of centre a near the front windows.
It already has a static vent to the rear of the cabin between the galley and toilet cubicle. The improvement has been incredible far less condensatoin down the forward end of the cabin still some around the rear end. I had hoped that with one fixed and one powered a bit of air circulation would be set up. I have also put a fixed one in the roof of the rear cabin which has helped. I am now sold on the efficency of the solar ones (supplied to me by Thorneycroft Engineering on E-Bay)when, (WHEN??) I finish this refit I will be replacing the two fixed ones with solar extracts. The new doors have also been well supplied with vents to alow for air movement (in addition to BSC gas vent requirements.
I have insulated the rear cabin to a degree by lining the hull and transom behind the decorative panels with closed foam sheet that was intended to be a sleeping mats for camping (I used the Hi-Tech ones from Go Outdoors) its in convienient managable lengths. This seems to have made a difference but time to tell will be when (that word again)the boat is back on the water.
Good ventilation and lots of jumpers seems to be the answer.
Good luck,
Ken
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Peter Walker
United Kingdom
58 Posts |
Posted - 14 Feb 2012 : 20:06:30
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I remember reading once about an american liveaboard who insulated his yacht with that sort of bedding roll. He did a belt and braces job though: first attaching vertical strips of bendy thin plywood with epoxy to the hull sides building up 3/4" thickness; then glassing over the ply; then fixing several layers of foam mat glued tight to the hull between each strip; then covering the foam with a bendy sheet of pre-made thin fibreglass; and finally screwing thin section tongue and groove hardwood horizontally attached to each of the vertical strips with brass screws. As I recall it looked very smart and he used it through N American winters.
If you want to use your boat a lot in winter you might copy some parts of that scheme!
Norman 22 on the river Avon, Warwickshire |
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Knighty
United Kingdom
654 Posts |
Posted - 15 Feb 2012 : 19:38:09
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Was suprised how much they do sweat/condensate under a cover. Stuck my head under the canopy of my boat on our drive a few weeks back to give the battery a charge and the helm chair which was new last season was covered in a fungusy type mould. A quick wipe and it came off alright, even the bulkhead had a grimey mould on as well.
I did covery the canopy with a large tarp so probably cut off a lot of ventilation. |
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adi-n-chez
United Kingdom
1980 Posts |
Posted - 15 Feb 2012 : 21:43:19
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quote:
Originally posted by Knighty
Was suprised how much they do sweat/condensate under a cover. Stuck my head under the canopy of my boat on our drive a few weeks back to give the battery a charge and the helm chair which was new last season was covered in a fungusy type mould. A quick wipe and it came off alright, even the bulkhead had a grimey mould on as well.
I did covery the canopy with a large tarp so probably cut off a lot of ventilation.
Knighty
We suffered from this type of damp / mould a couple of years ago - I originally thought it was due to a damp winter , but now have put it down to water in the bilges - Since we have stopped that problem (Leaky canopy & leaky transducer in the hull , we dont seem to have the problem) To be fair this yrs winter has been drier than most , but we never had a bad problem in the early yrs of ownership (Before the leaks  )
Adi
Sewer Tubes ? I'd rather have a D**ncr*ft (Only Kidding) |
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Revolvor
United Kingdom
75 Posts |
Posted - 19 Feb 2012 : 21:58:38
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Visited my Norman 23 today, fearing the worst after the first winter since I bought it. Was pleasantly surprised .. a bit of mould on the table and "heads" curtain, but otherwise OK. I have two solar extractor fans in the roof which were turning well, so think they have done a good job at keeping fresh air circulating. Left a few open plastic boxes filled with silica gel which should continue to absorb moisture. Was also worried about the battery, but pumped the fuel bulb and the engine started first turn - not bad for a 30 year old 2-stroke. Looking forward to cleaning the outside a bit and then the first trip of the season.
John
Roads? Where we're going we don't need roads! |
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Sweaty boat
