[pure-silver] Re: light tight louvered vents
- From: "K W Hart" <kwhart1@xxxxxxxxxxxx>
- To: <pure-silver@xxxxxxxxxxxxx>
- Date: Sat, 18 Feb 2012 13:13:37 -0500
"Sister", in framing parlance, is attaching a second piece of lumber onto an
original piece. It's usually done when the original beam has been structurally
compromised. Perhaps the original beam has split. Or a careless plumber or
electrician has cut into the beam to add plumbing or wiring. Or the original
beam wasn't strong enough for the weight load it was meant to support.
The problem with sistering a beam is that the weight of the new beam is now
added into the structure. Depending on the situation, this could be a problem,
and it may be better to remove the bad beam and replace it with new lumber.
No, I'm not a contractor; I just watch a lot of Bob Vila!
Ken Hart
kwhart1@xxxxxxxxxxxx
----- Original Message -----
From: shannon Stoney
To: pure-silver@xxxxxxxxxxxxx
Sent: Saturday, February 18, 2012 12:47 PM
Subject: [pure-silver] Re: light tight louvered vents
Now if your contractor can weigh in on whether we should sister all our
ceiling joists or just the sagging ones that would be great. ;)
What does that mean, to "sister" ceiling joists?
--shannon
e
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From: shannon Stoney <shannonstoney@xxxxxxxxxxxxxxx>
To: pure-silver@xxxxxxxxxxxxx
Sent: Saturday, February 18, 2012 8:31 AM
Subject: [pure-silver] light tight louvered vents
I'm building a small outbuilding for my new darkroom. I am planning to use
light tight louvered vents that you can buy pre-manufactured, from BH
photovideo or Adorama. My contractor is worried that these won't be truly light
tight or water proof: he thinks that rain will come through them, or that they
might not be really light-tight. I was thinking they could go on the south
exterior wall of the building under the eaves, but he thinks they should draw
air from a little vestibule where they can be protected from weather. The one
I have now IS protected from weather in that way, but I didn't think that it
had to be.
Does anybody have any experience with whether these plastic vents are truly
light tight and water tight when they're on the exterior of a building?
Thanks.
--shannon============================================================================================================To
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