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You need a strap wrench or similar tool, as mentioned above. It's not for the shower head, but to hold the pipe coming out of the wall. You can use a regular adjustable or open end wrench on the shower head itself. The idea is not to bend or damage the pipe coming out of the wall. Sorry if...

NJ law makes it pretty clear that a permit is required for this work. Sure, I can skip that, but in the future if I need to sell this house, someone could call my bluff and then I'd have a problem.

Before I start the project I will hire a plumber to replace the main shutoff valve inside the house. Would a professional plumber be offended if I sought his opinion on my planned layout?

I'm not sure exactly what level of planning I have to show, but I will need a permit and a go-ahead from the local inspector, according to the town hall.

As wood4d pointed out, I will have to get a permit to do the install. Need to draw up plans and provide to the local plumbing inspector for the go-ahead.

The piping going upstairs is 1/2" copper, both hot and cold. Those two pipes supply a shower, tub, toilet, and two sinks. I got an adapter to put the pressure gauge on the shower. As expected, the static pressure was around 60 psi. If I open the tub faucet (hot) it dropped to about 20 psi. If I...

Good point, thank you for that recommendation. The first fixture after the water meter is a hose bib plumbed with 3/4" pipe. I get a little over 7 GPM through that hose bib. When I take the shower head off the upstairs shower, running cold water, I get about 3.5 GPM - less than half the flow rate.

Static water pressure at home inlet is 65 psi. When I open two cold faucets in the upstairs bathroom the pressure is 58 psi. I guess the amount of pressure drop is related to the impedance to the water flow? So if the piping was straight and large diameter there would be a bigger drop .. I...

Water pressure at hose bib closest to home inlet is 65 psi.

The pics are kind of pointless without some annotations so here's a rudimentary attempt to point out what goes where. If it's not labeled it's probably a boiler pipe for heating the house, or gas line.

After continuing to read about PEX system planning and other things, I'm beginning to think there might be some fundamental problems with the current plumbing system design in my house. Presently the hot water heater is about 60' of pipe away from where the supply enters the house. The first...

Thanks gents for responding. As far as I can tell, all the supply piping within the house is copper. Some of it looked like cast iron to me, but after scraping it off, it's clearly copper. The plumbing is not original to the house, which was constructed with no plumbing at all as far as I know...

Greetings All, I am a homeowner in southern New Jersey. My house was built around 1893 with no plumbing. At some point plumbing was added, to create an upstairs and downstairs bathroom, and a kitchen sink which exists in an addition to the home. The bathroom drainage is visible in the basement...