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Old 05-04-2012, 12:44   #16
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Re: Material used to ventilate under mattress/cushions?

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Originally Posted by ReMetau View Post
Look at Froli mattress systems.
Friends who've been liveaboards in the Carib for many years now say that their Froli set up was worth the large number of pennies it cost.

And they aren't prone to parting with them, so it must be good. They also said they liked the service they received.
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Old 05-04-2012, 13:56   #17
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Re: Material used to ventilate under mattress/cushions?

Under all the bunks Ive had over the years, I have used 1x1/4 lathe lengthwise on the berth surface, then across that leaving 1 in gaps between the top lathes. I t allows cerculation under the mattress and is pretty inexpensive ! but really you need to increase air cerculation in the boat! air movement is really important to reducing the amount of condensation you are haveing ! Just my 2 cents
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Old 03-10-2012, 18:00   #18
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Re: Material used to ventilate under mattress/cushions?

Just wanted to answer the OP's questions about the heater adding to the moisture. A major product of combustion is water vapor, so if your heater is burning anything and not properly vented outside, then yes it is adding moisture. Electric heat, or heat with a functioning exhaust should not add moisture.

As a mechanical engineer, the ventilation suggestions sound good, and I'm intrigued by a manufacturer saying night ventilation is better because the water vapor has fallen out of the air as dew and therefore the air you bring in is drier.
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Old 04-10-2012, 08:24   #19
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Re: Material used to ventilate under mattress/cushions?

Another vote for the Froli system. It is a little expensive but it works. No problems with mildew or any condensation after a year in the Caribbean and several summers in the Chesapeake
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Old 04-10-2012, 09:13   #20
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Re: Material used to ventilate under mattress/cushions?

Here's the option that I ended up going with. The site where I purchased the material no longer carries it but what I purchased looks like the "Watairvent" and "Groundguard" on this page:

Advanced Building Products - Roof Drainage & Ventilation

It's very stiff and is thicker than the dri-deck panels, etc. so I thought it may vent better. It cuts with scissors so was easy to install. I put it into place with the coarse side down so that the backing supports the mattress more evenly.

Jonathan
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Old 06-10-2012, 13:38   #21
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Re: Material used to ventilate under mattress/cushions?

(1) Is the mattress open cell foam or closed cell? Your problem could be the mattress itself. (2) Could you drill small holes in the deck under the mattress to increase circulation? If there is stowage under the bed, the entire area could benefit by more air holes.
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Old 06-10-2012, 13:57   #22
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Re: Material used to ventilate under mattress/cushions?

Another vote for Froli, and use Phifertex on the underside of any cushion cover.
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Old 12-10-2012, 19:28   #23
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I got an idea from Jonathan... I was in Walmart and saw these fiber air filter things, similar to the watairvent. Cut to fit filters. I bought some and are giving them a try. If they work, the price is sure right... See pic link http://www.flandersfilters.com/wp-co...ges/sm1006.jpg
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Old 31-10-2012, 15:06   #24
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Re: Material used to ventilate under mattress/cushions?

Hi everybody,

We recently purchase this product:

Protège matelas commander en ligne chez compass24.fr

and spent few nights in the channel islands some days ago, on the opposite of what use to happend in the past, no more humidity was found under the matress in the morning.
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