So, its bad enough I have plumbing issues in the main bath, but I also have problems with the master ensuite toilet too.

Every time I flush the toilet in this room, I get a loud banging noise. This toilet is on the 2nd floor and the pipe is a straight drop (with no elbows) to the basement. There is 1 elbow in the basement so the long straight pipe can go into the floor pipe. The plumber has cut holes in my living room walls twice now to secure the pipe - he says the pipe is banging against the wood which is making the noise. He also said that the noise is caused by the water hitting the elbow at the basement since it goes down a long way and at great speeds.

I'm leaning towards an arrester issue myself. Now, I'm NOT an expert, but I don't actually see that any of my toilets have one of these. I would have thought that it would have been located on the water line between the tank and the floor (where the water shut off is)? I did turn the water off at the toilet and emptied the tank and let it sit for a bit. Then I turned it back on. When I flushed, I held the handle down until all the water had flushed and was starting to fill back up. The noise was still there but much quieter. Today it is back to its noisy banging self when I flush.

Would installing an arrester help? Might it be a water pressure thing - this toilet flushes extermely well (compared to my other no-pressure toilet on the same floor).

The builder's plumber doesn't seem to know what to do and I don't think he is really trying to fix the issue (for either toilets).

Catherine

When does the noise occur, after the flush or after the tank has finished refilling?


- this toilet flushes extermely well (compared to my other no-pressure toilet on the same floor). Catherine

What kind of toilet is this?

The noise happens just after I flush. It is an American Standard (1yr old, came from the builder)

Catherine

Is this a power flush type toilet?

Not sure what that type is? It looks like a normal flush toilet to me - same as what my parents have in their house as well as what everyone else had in their washrooms. I would have to say No.

Then I have to question why you said "compared to my other no-pressure toilet". Right now it sounds like you have a very high water pressure, a single lever lavatory faucet and power flush toilet (combining your other post about the hissing noise). When you turn the water off at the lavatory quickly there is a momentary, very high water pressure on the lines. It's like a car hitting a brick wall. This pressure overrides the float seal in the toilet and a small amount of water goes into the toilet. When you flush and the water starts to refill the tank starts coming in under high pressure it bangs against the walls of the inner tank. Remove the toilet tank lid and see if there is an inner tank. Try turning the lavatory faucet off slowly and see if you hear the hissing from the toilet. If all of this is correct you need to adjust the water pressure down. The water aresters can be installed anywhere along the line which would also help.

Rereading you other post, I see that the plumber replace the ball cock. That means that you don't have a power flush toilet. However the high pressure could be causing the ball cock float to move in the tank. Remove lid and flush, see if anything is banging the sides of the tank. Then turn off the stop valve under the tank and flush again. If the noise exist with the stop valve turned off you will know that it is coming from the drain pipe, if not it is coming from the water supply line.

OK - I may be lost here. 2 different posts about 2 different bathroom problems.

So the 2nd floor main bathroom had everything under the lid replaced with a newer model - this model doesn't have the black ball with it. This main bath doesn't has rather low pressure when I flush and I have to hold down the handle until everything flushes out. This is the same bath that has the water level that goes down slowly over the day. This is also the same bathroom where the tub gurgles when I flush the toilet. And last, it also has an issue with running water sounds in the toilet when I turn the bathroom tap off (only happens on occaision).

The master bedroom bath has the banging issue when just after I flush the toilet. The water pressure in this bathroom is very good and it's the same pressure as the main floor powder room washroom.

So 2 different bathrooms with different issues.

Not sure if this clarifies things.
Thanks
Catherine

If I underdtand correctly,
Main bath, 2nd floor, the water level in the toilet tank leaks down, flushs poorly and the creates a gurggling noise in the tub. It also makes a hissing when the lavatory sink faucet is closed. It has this type of valve in the tank.

Replace the flapper,
Have the toilet removed and smake the drain from the toilet.
Have the house water pressure reduced slightly to get rid of the hissing noise.

Yes, this is correct and the picture is bang on to what I have. Funny, I thought that since it didn't flush well, it didn't have good pressure (or as good as the other toilets). But I guess you're suggesting that this could be due to a clog somewhere that would cause the poor flush power. I'll get the plumber to replace the flapper again (this will be the 3rd one for this toilet) and adjust the pressure. I'll let you know how it works out - thanks very much!

Any suggestions now for the master bathroom toilet and the banging issues when the toilet is flushed?

Master bath also on 2nd floor,
Has this type of valve.

The toilet makes banging noise when flushed.

Remove lid, flush toilet and observe if water coming in is causing ball cock to hit on sides of tank.
Turn off water at stop valve and flush. If you still have the noise the problem is indeed in the drain. No noise the problem is probably in the water supply. Reducing the house water pressure may make this problem go away.

Have him check the rim of th opening where the flapper sits. It may have a scratch in it. Can use a Korky Fluser Fixit kit . It come with a new rim that is glued onto the existing rim so that the flapper has a new surface to seal too. A leak can also occur if the overflow pipe is not tighten to the tank enough. The tank has to be remove from the bowl to tighten nut underneath the tank.