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Old 01-06-2009, 12:03 PM   #1
wolfdog
 
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Pex pipe in the attic?


Hey guys, just found this site, and it looks great. I am building a new home, and am using PEX pipe for the water. I am running the supply UG, obviously, but am planning to run the sub-feeds overhead. What is the best way to insulate the pipe in the attic? Our temps range from about 120* down to 0" in the attic, depending on the time of year.

Or should I consider running it all UG?

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Old 01-06-2009, 12:13 PM   #2
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Pex pipe in the attic?


More info needed. What kind of basement?or crawl?or slab?

One note--water wont run too good at 0* F. for ANY amount of time.

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Old 01-06-2009, 12:20 PM   #3
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Pex pipe in the attic?




no crawl space -- slab on grade.
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Old 01-06-2009, 01:50 PM   #4
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Pex pipe in the attic?


Avoid running the pipes in the attic at all costs. Insulation helps, but generally won't do enough in an attic if it is 3 degrees outside. I'd suggest going underground wherever possible.
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Old 01-06-2009, 06:23 PM   #5
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Pex pipe in the attic?


Thanks

So a couple quick questions:

1. do I need to sleeve the pex in the ground, or just sand it? And how deep?
2. When I turn up, I presume I need to sleeve it through the slab; is there a better way than sleeving it in a PVC elbow help keep the radius as it turns up?
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Old 01-06-2009, 10:00 PM   #6
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Pex pipe in the attic?


You can direct bury most PEX, but check with your local codes department to make sure they don't have any special/specific requirements. Yes, use pipe insulation pieces to isolate it where it penetrates the slab.
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Old 01-06-2009, 10:40 PM   #7
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Pex pipe in the attic?


I love pex pipe,they make fittings for just about every application. You can mix copper and pex water supply lines
and save yourself alot of time plumbing. I use Vangaurd pipeing systems, LINK REMOVED. Check the site

Last edited by Termite; 01-10-2009 at 02:50 PM. Reason: advertising link removed
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Old 01-06-2009, 11:24 PM   #8
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Pex pipe in the attic?


Avoid connections if they are buried. You want to go for complete runs. The crimp fittings are not rated for burial.
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Old 01-10-2009, 08:44 AM   #9
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Pex pipe in the attic?


I stake my pex coming up through slabs, i used to use rebar as the stakes but i found the smooth surface of EMT much better so no abrasion takes place, just hammer in the stake where you want the water lines to come up sleeve the pipe and duct tape, wham bam!

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