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Old 03-17-2017, 10:33 AM   #1
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Running supply line for icemaker


Running supply line for icemaker-house-10.jpg
Dayton Ohio area. Our kitchen is on a slab and the original builder did not run a supply line for the fridge icemaker. My only choice is to go from the kitchen bar wall on the right overhead thru the attic and drop back down behind the refrigerator. These are both interior walls. Dishwasher is on the end next to the wall I want to go up so getting connected there isn't an issue. House is all copper. For this application should I use a Pex ? with a heavy foam pipe insulation and keep it along the ceiling under the insulation in the attic to prevent freezing?
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Old 03-17-2017, 10:38 AM   #2
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Re: Running supply line for icemaker


Oh boy..... Hate to run any plumbing on outside walls/attics and I bet IN/OH can get pretty cold.

Any chance you can snake any supply through (or on top of) your cabinetry.
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Old 03-17-2017, 11:29 AM   #3
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Re: Running supply line for icemaker


[QUOTE=Cattman; with a heavy foam pipe insulation and keep it along the ceiling under the insulation in the attic to prevent freezing?[/QUOTE]
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That would be insulating the room heat, that will keep the pipe from freezing, away from the pipe. Do not insulate the pipe but as you mentioned keep the pipe on the living quarters side of the attic insulation.
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Old 03-17-2017, 11:37 AM   #4
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Re: Running supply line for icemaker


There is no way to run it on the inside without building a bulkhead from the island to the wall the fridge is on. Running supply line for icemaker-house-12.jpg
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Old 03-17-2017, 02:28 PM   #5
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Re: Running supply line for icemaker


I would get the ice maker on your next house. Or wait until you redo the floor to run it underground. Attic is not a good option. With no heat source it will freeze.

Do you have any water on the other side of the refrigerator or cabinet area?

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Old 03-18-2017, 08:37 AM   #6
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Re: Running supply line for icemaker


Run an insulated 6 inch air duct through the unheated space. Leave both ends of the air duct opened and exposed into the heated space. It can be open inside the interior walls just so long the ends are in heated space. Run your water line through that.

I have had two 1/2 inch copper lines running this way through an unheated crawl space for 20 years and never had a problem, and I'm in Manitoba where we go down to -40 in the Winter.
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Old 03-18-2017, 03:26 PM   #7
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Re: Running supply line for icemaker


I would run a 1/4" soft copper line up the end of the kitchen bar wall to the attic like you plan. Just keep it between the ceiling drywall and the insulation in the attic. If necessary bore through the bottom edge of any ceiling joist. It won't freeze there unless your kitchen ceiling is freezing.
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Old 03-18-2017, 03:55 PM   #8
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Re: Running supply line for icemaker


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I would run a 1/4" soft copper line up the end of the kitchen bar wall to the attic like you plan. Just keep it between the ceiling drywall and the insulation in the attic. If necessary bore through the bottom edge of any ceiling joist. It won't freeze there unless your kitchen ceiling is freezing.
Ceiling joist could be part of a truss.
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Old 03-18-2017, 04:06 PM   #9
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Re: Running supply line for icemaker


Quote:
Ceiling joist could be part of a truss.
So? Nothing says you can drill a truss joist. Only need a 1/2 to 5/8 hole.

They could also be running parallel to run of the copper .
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Old 03-18-2017, 04:26 PM   #10
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Re: Running supply line for icemaker


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So? Nothing says you can drill a truss joist. Only need a 1/2 to 5/8 hole.

They could also be running parallel to run of the copper .
No truss drilling here.

Parallel would make it easy.
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Old 03-18-2017, 04:30 PM   #11
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Re: Running supply line for icemaker


Run it across the top of joist. Lay a bat of insulation on top of the copper.
This is Ohio, not Polar Bear country
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Old 03-18-2017, 04:35 PM   #12
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Re: Running supply line for icemaker


I would not run copper through drywall again without sleeving it. Plastic for me.
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Old 03-18-2017, 06:12 PM   #13
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Re: Running supply line for icemaker


If your going to run it run it in 1/4 inch pex so if it does freeze it will not burst open.
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