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Hole in Soffit; Temporary Measure ?
Topic Started: Nov 4 2016, 08:17 AM (765 Views)
Durgan
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A few years ago I got called over to my daughters house in Oakville to determine where the roof was leaking, since my SIL was apprehensive of heights.

I climbed the ladder and entered the trap going to the attic. It was a bright sunny day and it was pitch black in the attic. I yelled, "where are the vents." Guess what there were no vents. House built in the fifties or later. I couldn't believe it.

Anyway a new roof fixed the leak, and his time vents were installed.

A soffit hole can be serious particularly if racoons are in the vicinity.
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wildie
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Dialtone
Nov 7 2016, 11:33 AM
You guys should have a read on this discussion. http://www.diychatroom.com/f97/any-thoughts-using-attic-heat-98654/

In our house we have about R50 between the ceiling and attic, so not much heat loss and good circulation to keep humidity low.
Thats an interesting discussion, Fred! When I bought this house it had R20 in the ceilings. I then had a contractor install another R20 over top of this!
With R40 up there, the heat to be recovered would be minimal.

I heat with natural gas on a budget billing plan that costs $500 annually. This includes the consumption from my BBQ. So for me the disruption for me to install such a system deters me from bothering!
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campy
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Goes what? Have you ever been up in your attic in the winter?

Here's my theory on insulation. Unless you have sealed off the attic completely all that insulation up there is just a giant filter.

And no matter how you try to avoid it, heat rises. It goes to the ceilings and even the insulation gets warm. Heat moves from hot to cold, not the other way around.



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campy
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Would make a great song.

'There's a hole in my soffit'
'Don't now how I got it'
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Trotsky
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Big City Boy
Dialtone
Nov 7 2016, 11:33 AM


In our house we have about R50 between the ceiling and attic, so not much heat loss and good circulation to keep humidity low.
Do you resent having to buy that candle every Winter to keep your house warm?
Edited by Trotsky, Nov 8 2016, 10:34 AM.
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Dialtone
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Trotsky
Nov 8 2016, 10:34 AM
Dialtone
Nov 7 2016, 11:33 AM


In our house we have about R50 between the ceiling and attic, so not much heat loss and good circulation to keep humidity low.
Do you resent having to buy that candle every Winter to keep your house warm?
Our house is quite well insulated, but has an Achilles heel due to a large sky light on a vaulted ceiling in the middle of the living room. I think the R factor on these things is about R3 or so, so you don't want to be sitting under it when it's -25 C outside. :cold: Makes for some nice natural light, but worrisome in a summer hail storm, so far we've been lucky.
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campy
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i wouldn't recommend a skylight to anyone living in Canada.

There is almost no way to keep it from leaking. Caulking compound gets brittle below zero.

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Dialtone
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Depends on the type you install, we've never had a leak in any of the houses we've had sky lights in. In this house, the actual light is raised about 4" above the roof level, metal flashings around the frame and the transparent part sits over the space with a lip around it, so the "light" would have to crack before it leaked.
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campy
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Talk to me about ten years from now and tell me how you had to fix it.

It's just not a good idea to cut a hole in the roof for anything when the temperature is below zero and the snow is covering the skylight for 6 months.

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Dialtone
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campy
Nov 8 2016, 11:33 AM
Talk to me about ten years from now and tell me how you had to fix it.

It's just not a good idea to cut a hole in the roof for anything when the temperature is below zero and the snow is covering the skylight for 6 months.

Guess you never lived in Southern Alberta with Chinook winds just about every week. I've never had snow sit longer than a day or 2 on our skylight, and if you're still around in 10 yrs (or if I am), I'll rub it in on how it remained leak free.
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swing
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swing
The Dr. at the back of me has several skylights. I've never seen anyone in repairing them in 28 years and we don't get chinooks! My D also had sky lights in T.O. in her 100 year old house, no problem.
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campy
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Dialtone
Nov 8 2016, 11:37 AM
campy
Nov 8 2016, 11:33 AM
Talk to me about ten years from now and tell me how you had to fix it.

It's just not a good idea to cut a hole in the roof for anything when the temperature is below zero and the snow is covering the skylight for 6 months.

Guess you never lived in Southern Alberta with Chinook winds just about every week. I've never had snow sit longer than a day or 2 on our skylight, and if you're still around in 10 yrs (or if I am), I'll rub it in on how it remained leak free.
You might make it.

I'm at the 'best before date'. :cold:
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wildie
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campy
Nov 7 2016, 04:53 PM
Goes what? Have you ever been up in your attic in the winter?

Here's my theory on insulation. Unless you have sealed off the attic completely all that insulation up there is just a giant filter.

And no matter how you try to avoid it, heat rises. It goes to the ceilings and even the insulation gets warm. Heat moves from hot to cold, not the other way around.



That's why when you insulate a water line, Without a heat source it will eventually freeze. Insulation alone won't prevent freezing. Even with R40 wrapped around, infiltration through the insulation will allow the heat to eventually dissipate.
To prevent the water from freezing heat must be applied that equals the heat loss through the insulation.
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wildie
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campy
Nov 8 2016, 02:00 AM
Would make a great song.

'There's a hole in my soffit'
'Don't now how I got it'
Dear Campy! Dear Campy! :praying.gif:
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Trotsky
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Big City Boy
Dialtone
Nov 8 2016, 10:55 AM
Trotsky
Nov 8 2016, 10:34 AM

Quoting limited to 2 levels deepR50 between the ceiling and attic
Our house is quite well insulated, but has an Achilles heel due to a large sky light on a vaulted ceiling in the middle of the living room. I think the R factor on these things is about R3 or so, so you don't want to be sitting under it when it's -25 C outside. :cold: Makes for some nice natural light, but worrisome in a summer hail storm, so far we've been lucky.
All you need is about 8 more layers of glass on the skylight. Shouldn't cost more than $100 G's.
Edited by Trotsky, Nov 9 2016, 02:28 AM.
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