HyperVent or Equal

[Old PDQ Message Board]

HyperVent or Equal

Posted by Rick Kilmer on February 24, 2003 at 05:22:00:

Has anyone come up with a less expensive and workable solution to moisture under
the matress. I calculate $170 to install Hypervent in the two forward cabins of
our PDQ36.

Follow Ups:

Re: HyperVent or Equal Chet White 21:17:08 03/07/03 (1)
Re: HyperVent or Equal Roger Ford 09:41:32 03/10/03 (0)
Re: HyperVent or Equal Roger Ford 04:58:28 03/06/03 (2)
Re: HyperVent or Equal Chet White 20:13:15 03/05/03 (3)
Re: HyperVent or Equal Roger Pollard 23:28:50 02/25/03 (0)
Re: HyperVent or Equal John Frankovich 16:40:26 02/25/03 (0)
Re: HyperVent or Equal Terry Green 11:11:40 02/24/03 (1)
Re: HyperVent or Equal Roger Pollard 23:24:40 02/25/03 (0)

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Re: HyperVent or Equal

Posted by Chet White on March 07, 2003 at 21:17:00:
In Reply to: Re: HyperVent or Equal posted by Roger Ford on March 06, 2003 at
04:58:00:

Hi Roger,
Time to retire and head South so you don't have all those problems!!
Chet

Follow Ups:

Re: HyperVent or Equal Roger Ford 09:41:32 03/10/03 (0)

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Re: HyperVent or Equal

Posted by Roger Ford on March 10, 2003 at 09:41:00:
In Reply to: Re: HyperVent or Equal posted by Chet White on March 07, 2003 at
21:17:00:

1 year / 3 months - save me a spot ....

Follow Ups:

Re: HyperVent or Equal

Posted by Roger Ford on March 06, 2003 at 04:58:00:
In Reply to: Re: HyperVent or Equal posted by Chet White on March 05, 2003 at
20:13:00:

Chet: I'm jealous!!! It's because of the tropical climate that you don't have
moisture. The base of the berth is between the hulls over the water. Imagine
sub-freezing air cooling this base to under 32 degrees and then putting 70
degree + air, plus body heat, and moisture, directly above the base. This is the
issue in the colder climates ....

Follow Ups:

Re: HyperVent or Equal

Posted by Chet White on March 05, 2003 at 20:13:00:
In Reply to: HyperVent or Equal posted by Rick Kilmer on February 24, 2003 at
05:22:00:

Hi Rick,
Several years ago we put one inch closed cell foam under the mattresses
primarily to add additional cushioning to the mattress. We have not had any
moisture problems under the mattresses in all these years

The boat spends all its time in tropical climates

Chet
Allezcat 36010

Follow Ups:

Re: HyperVent or Equal

Posted by Roger Pollard on February 25, 2003 at 23:28:00:
In Reply to: HyperVent or Equal posted by Rick Kilmer on February 24, 2003 at
05:22:00:

Check with a few waterproofing companies. On most project we end up throwing
away more hydroduct than it would take to cover the area under the front bunks.

Follow Ups:

Re: HyperVent or Equal

Posted by John Frankovich on February 25, 2003 at 16:40:00:
In Reply to: HyperVent or Equal posted by Rick Kilmer on February 24, 2003 at
05:22:00:

We diagnosed the problem as body moisture going through the mattress and
condensing on the inside of the bridge deck. Our solution, which works 100% in
New England climate, was to encase the mattress in a standard waterproof plastic
mattress zip bag and to put an extra layer of foam mattress (look in outdoor
camping equipment stores) as an insulator below it. Not very expensive, and I
now keep dry spare charts under the mattress

BTW, another source of irritating bed wetting was from condensation fallig from
the hatch over the bed. This was solved by cutting thin plastic sheets (look in
kitchen equipment stores for very thin cutting boards) to fit between the
screens and the hatch window. Also 100% effective.

Follow Ups:

Re: HyperVent or Equal

Posted by Terry Green on February 24, 2003 at 11:11:00:
In Reply to: HyperVent or Equal posted by Rick Kilmer on February 24, 2003 at
05:22:00:

Rick,
I used hypervent at the recommendation of Roger Ford. It works abosolutely. It
was worth evey penny I spent on it, and I would not use eanything else.

Follow Ups:

Re: HyperVent or Equal Roger Pollard 23:24:40 02/25/03 (0)

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Re: HyperVent or Equal

Posted by Roger Pollard on February 25, 2003 at 23:24:00:
In Reply to: Re: HyperVent or Equal posted by Terry Green on February 24, 2003
at 11:11:00:

You may check into a Grace Product called hydoduct. It is designed to be a
subterranean drain but it should work as a vent also. It is sold in rolls 36"
wide. Miradrain may also work. It is a similar product made by another company

Check with your better building supply houses, they should carry it or know who
does.