Where you adjust the temperature is the cartridge that is being recommended that you change. The valve that changes the different heads is just a diverter valve. You don’t show any views of the temperature valve but I caution you disassembling without trying to identifying the manufacturer and having the replacement cartridge on site. Nothing worse than removing a cartridge and having it come apart and not being able to reinstall and having the water off. Looking closer I can tell that the brand is Kohler. You should be able to look on their website and identify your exact model and pick up a cartridge locally.

Wow I dont think Ive EVER seen a shed built so meticulously. It's like some sort of thesis project 🤣💕 Great job, looked like you had a lot of fun. You must be an engineer at your day job

Uhu sticky pads! I discovered them this year, after decades of using push pins, and they’re an absolute game changer! No sore thumb, no accidentally dropping one on the floor and rushing to find it before someone steps on it! Just quick and easy and it works.

I’m fully expecting to have to touch up my paintwork come January, but I can live with that!

I would also suggest just taking the cartridge out, cleaning it, and putting it back in. I've had this problem before and cleaning everything up and making sure all the springs are properly seated fixes it.

This is exactly what I was going to say. I also have a multi-head shower and the cartridge needs to be cleaned out every 8 months or so or one of the heads will inevitably start dripping. It's a pretty easy process that really just requires a screwdriver. And remembering to turn off the water is crucial to not launch the cartridge across your shower when you get it loose 😂

Do this. Cartridge is cheap. Make a list of all the issues in the house. Do all in a single trip.

I will never understand people who call a plumber for minute issues and pay so much in fees. Do it all at once

Many home sales contracts include a year of home warranty coverage paid for by the seller. Since you bought it recently, it might be worth seeing if that's covered.

I'd just use tacks or staples.

In all the apartments I ever lived in it was in the lease that you wouldn't be charged for holes in the wall as long as you spackled them.

Remember to shut off the water first, usually at the water main. Shouldn't need to be said, but...

I do. Still have yet to upgrade as despite some spatter it still handles fine. Gone all the way to 1/4in and still got acceptable strong welds.

I'm about to do some frame rails and I don't think I'll get enough penetration, so I'll be borrowing the neighbors stick welder that runs on 220v. But other than that I've not needed anything different.

Grinder and paint, hides it fine.

Not sure your budget, but shower heads are super cheap and easy to replace. Just takes a wrench to get started. As others have said it sounds like a problem with the valve in the shower head itself, and if you're gonna start pulling apart the shower head anyways, might aswell just replace it.

Guess this is what I get for rushing the job. I really wanted to insulate a bit for today's weather.

A guy at Lowes recommended the f26 when I saw they were out of the material - specific adhesive. Hopefully the film on the boards will save it.

Hopefully the bulk of the curing is done. It's been 24 hours. It's been wide open for a few hours yesterday and I just had the fan blowing on it for an hour. The door is cracked open now. It's been about 40 degrees since application.

What I posted is 100% true. The. Light. Bulb. Won't. ignite. Anything.

Besides, while the fumes from the adhesive are flammable there's not going to be enough in the air to ignite from a switch.

Partially true. The element in the bulb is sealed, but when turning on a light you will get a tiny spark when the parts inside the switch make contact.

I asked a friend that was a police officer in a city where there were lots of drug busts the question why in movies (and real life) the police don't switch on a light when entering a home to search.

He said that in quite a few drug houses they either booby trap the light switches as well as fumes created from meth production (and other drugs) is flammable enough to ignite. They go through training that shows that a light switch can ignite the fumes if there is a high enough concentrate of flammable/explosive gas.

The electronics they use (radio/flashlight) have been certified to not create sparks when in use for this reason.

You most likely need a new shower cartridge. I had the same issue with my tub recently. It's pretty easy to do by yourself if you can find the correct replacement parts. There are a bunch of videos on YouTube.

The shower heads themselves are completely dumb non-operable devices. They don't have any valves in them and only distribute the water they are fed, from the valve. Your valve is leaking.

I work at my house, so it's all the same shit.

Not a new house in the sense of built. We bought it recently. The previous owner did a fair number of home improvements.

Old problem. Someone has suggested a new value cartridge as a possible solution

You are correct. Your valve that controls the water flow is not fully closing. The show heads are simply where that water ends up coming out. I would assume that, since this is a new house, the builder will fix the issue?

Your photo doesn’t show the make/model of your valve. But it’s typically just a faceplate between the valve handle and the actual inner workings of the valve.

The light bulb won't ignite anything unless it gets broken.

[the] "showerheads leak from where the water should be coming out"

As in: "the water dribbles out rather than spraying"?

Is this a new problem, or has it been this way since you moved in?

If it's a new problem, is it cold where you live right now?

If it's new and it's cold, it could be a mostly frozen pipe. Turn the water on in the shower to halfway between hot and cold (so both lines are running) and just leave it for 30 minutes. Does the flow improve?

Figure out the brand. The valve cartridge is what you'll need to replace. That may be above your head, but I'd start looking those terms up.

Oh, OK, yeah, not great :)

Thank you, I added clarification to the post.

The shower heads drip when not in use. About 1 pint a day I think.