[Domesteading 00163] Re: Domesteading Digest, Vol 27, Issue 9

[d.union]

Hi
The problem is the bathroom in the 2nd floor is all in the roof area, that is there
is no real wall, Unless I want to try to pull the steam down
through the *floor* and go out the wall that's on it's edge.

So I need something I can put into the roof. At the 'top' it can be
something that's on nearly 'standard' roof pitch. Elsewhere it would
be a much more than standard roof pitch. And whatever I use,
I only have the 4" of insulation and then the roofing, so I don't
have any airspace to work with for extra insulation. And I don't
want this to be a source of major heat loss.

I'm told that there is a 3" plumber's vent that can be put in from
inside a roof - cut a hole, push through, pull down (as long as it's
warm enough outside for the seal to take), then in theory
I might be able to use a 4" to 3" adapter on a traditional vent, make
a box-frame for it, and just have it 'somewhere' on the wall. That's
my current thought anyway, there's a light nearby so I have nearby
electrical.

But..
  A high CFM unit might not be happy with a 3" vent
  A normal vent won't keep out rain, they're designed only for 
    vertical installation under a roof-ledge or overhang, and most
    of them won't take the heat you have on a roof anyway. And
    none of them would keep out determined hornets (that I'm
    sure of).

We also get a lot of snow on the roof, whatever it is, it has to be
such that snow and ice can't back up into it, and preferably that
hornets can't nest in it.

So I don't have any better ideas yet....

I haven't made it to the plumbing supply store to check out this
kind of vent, apparently it's only found at specific plumbing supply
stores, not at the 'home depot' type places (I've looked there).

There's also a really big triangular skylight window in the bathroom but 
exhausting through this seems even more problematic, and
won't work in the winter, especially if there's snow on the roof.

DMU
  ----- Original Message ----- 
  From: Robert Vance 
  To: d.union ; A forum for the discussion of aspects of independent, off-the-grid living 
  Sent: Sunday, April 08, 2007 10:22 AM
  Subject: Re: [Domesteading 00161] Re: Domesteading Digest, Vol 27, Issue 9


  This is something that has always interested me: faulty roofing! And I say that because the pattern of the shingling isn't that much different than a "paint by the numbers" kit - after putting down sheathing for the creases you start off low and everything above that is done so that it overlaps, thus guiding the water flow downward.

  I am faced with the necessity of putting in a bathroom vent fan also and was told by someone more knowledgeable than me that the exit for the air flow doesn't have to be at the ceiling - it can be through a vertical wall.

  BobV!
    ----- Original Message ----- 
    From: d.union 
    To: domesteading at sculptors.com 
    Sent: Saturday, April 07, 2007 10:34 PM
    Subject: [Domesteading 00161] Re: Domesteading Digest, Vol 27, Issue 9


    Hi
    We have a dome, monteray double dome,
    about 23 years old. Roofing is a concern with any dome
    house IMO. In our case mostly because it wasn't done 
    right originally, and of course the first re-do was worse, 
    which just before we bought the house. We bought the 
    house about 8 years ago and had to redo the main roof 
    shortly after we bought it despite the fact that the roofing 
    was only 2 years old.

    But a decent roof job goes a long way...

    Has anyone done a bathroom ceiling vent in an
    'upstairs', that is at the dome roof level, bathroom?

    The dome is a 25' dome and the first floor is about 
    10 feet with the flooring, so that at the peak of the 
    ceiling over the bathroom floor it's nearly 15' up...
    pretty far to suck out the shower steam from.

    Right near the shower the ceiling is of course
    only at about the 10' level, but we're right 'in'
    the main dome wall and there is a slant at
    that point.

    So what are some good solutions for a 
    ceiling vent to vent the moisture out of the room
    when the shower is in use?