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Old 06-20-2013, 05:54 PM   #1
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Need help venting stove through attic


Just did the demo on my kitchen in preparation for new cabinets to be installed soon. When I removed the old range hood, the entire duct fell through the ceiling and onto the floor. I'll be replacing it with an over-the-range microwave.

I am having a hard time finding information online about how this is "supposed" to be attached and look in the attic.

Does the duct just fit loosely in the vent in the roof while only being held in place by straps? If so, it doesn't fit very tightly and there's lots of light that comes in. Is there some sort of part or way to seal this off better once I strap it back in?

Links to photos show:

1) Current hole in attic for old range hood which vents straight up.
2) The current vent on top of my roof (17" high).
3) Hole in my kitchen ceiling (is there a way to close this gap once I put the duct back in?)
4) Example of gas water heater ventilation, which is how the range hood was attached.

If anyone can direct me to a comprehensive source of info online, I'd appreciate it. My apologies if I don't know the proper names of things. I'm really quite handy but this is a new project.

Thank you!

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Old 06-20-2013, 06:03 PM   #2
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Need help venting stove through attic


Quote:
Originally Posted by Miss-Fixit View Post
Does the duct just fit loosely in the vent in the roof while only being held in place by straps?
The term you're missing is "starting collar". Look in your literature for this.

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Old 06-20-2013, 06:11 PM   #3
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Need help venting stove through attic


All that info should be right in the directions that came with the new microwave.
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Old 06-20-2013, 06:27 PM   #4
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Need help venting stove through attic


Quote:
Originally Posted by joecaption View Post
All that info should be right in the directions that came with the new microwave.
The directions that came with my microwave were rather skimpy. They mention a roof cap, straight duct and transition adaptor to the microwave.

What I need to know is how to fit the straight duct into the existing vent in the attic which looks like the inside of a funnel. There's nothing to attach it to.
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Old 06-20-2013, 06:31 PM   #5
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Need help venting stove through attic


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Originally Posted by joecaption View Post
All that info should be right in the directions that came with the new microwave.
Location was edited!
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Old 06-20-2013, 09:02 PM   #6
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Need help venting stove through attic


Quote:
Originally Posted by Miss-Fixit View Post
The directions that came with my microwave were rather skimpy. They mention a roof cap, straight duct and transition adaptor to the microwave.

What I need to know is how to fit the straight duct into the existing vent in the attic which looks like the inside of a funnel. There's nothing to attach it to.
Transition adaptor is starting collar.
Round duct sleeves male end to female end.
Rectangular duct uses slips and drives.
All should also be screwed and sealed with mastic.

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