It has gotten to the point now that there isn’t even enough pressure to run the shower. The metal pipe was changed last year and after that I cleaned out the hot water tank and change the elements that still made no difference in my water pressure and it’s both hot and cold. Found out while doing some trouble shooting that I still had metal pipe under the ground. So the past few years I have had an issue with water pressure. Hi my name is stacey I have an older mobile home still has the grey pipes under it. Would the hot water lose a lot of heat if it runs right next to a cold line? What’s the best way to protect the pex in that instance?Īnd lastly, how separate do I need to run the hot and cold lines? I can’t think of a good way to keep them apart as they run through the channel down the middle of my house and since I live in a northern climate I don’t want to insulate either or both of them against the warmth from the floor above. The duct itself will give some support but it’s metal and I know I need to minimize friction. How much can I rely on the insulation and the belly itself to support the line? What kind of support do you suggest given that I’ll have minimal access to the joists from underneath and I probably won’t even have enough space to swing a hammer when I’m under there? I won’t be removing any of the polybutylene so if it’s well supported, would tying the pex to it in some way be ok as support? (Thinking with zip ties, perhaps)Īnother question is about how to support the line that will cross the center of the house, over the heating duct to the opposite wall where my kitchen sink is. I’m not suuuuuper worried about code but I want it to be safe. The belly is in great shape all the way so I’d rather not slice into it a whole lot but code says it needs to be supported every 32”. My questions are: should I run a 3/4 inch hot line there or is 1/2 inch enough to supply both the sink and the shower? And how should I support that long water line under the house? It will run down the center of the house in the cavity along the heating duct and then sideways between the joists to the bathroom. I plan on running a 3/4 inch cold line to the bathroom and branching off from there (sink, toilet, shower, and possibly a new hose bib outside in the spot). I have another bathroom that is 40-50 feet away on the other end of the house. Most of the plumbing -one bathroom, kitchen, laundry- is on the end of the house where the water heater is. I’ll be doing everything with pex and I think I have most of it figured out but there are a couple of details that I don’t know about. I’ll be doing it mostly by myself since I live in a state where homeowners can do their own plumbing. I have the dreaded polybutylene so I’m looking at a full re-pipe this summer. I have a 1994 single wide that I bought a couple years ago.
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