Nighttime Toilet Noise

P

Pavel314

The upstairs toilet is working perfectly but it frequently makes a loud noise somewhere down the line when flushed in the middle of the night. It sounds like someone slammed a door in the basement. This only happens when I flush it at night, like around 2:00 a.m. or so, no such noise during the day.

Any ideas as to why this happens?

Paul
 
O

Oren

The upstairs toilet is working perfectly but it frequently makes a loud noise somewhere down the line when flushed in the middle of the night. It sounds like someone slammed a door in the basement. This only happens when I flush it at night, like around 2:00 a.m. or so, no such noise during the day.

Any ideas as to why this happens?

Paul
Is the sound like a high pitch chatter or like a thump sound?

Sounds like the flush valve is going bad... OR you might close the
supply valve a tad and see if that stops it. Water pressure is
generally higher at night.

See:

<http://bit.ly/1gPuiv3>
 
P

Pavel314

Is the sound like a high pitch chatter or like a thump sound?



Sounds like the flush valve is going bad... OR you might close the

supply valve a tad and see if that stops it. Water pressure is

generally higher at night.



See:



<http://bit.ly/1gPuiv3>
A loud thump, like a door slamming or a large dictionary being dropped on the floor. We're on a well, so the water pressure is in the same range roundthe clock.

Paul
 
D

DerbyDad03

Pavel314 said:
A loud thump, like a door slamming or a large dictionary being dropped on
the floor. We're on a well, so the water pressure is in the same range round the clock.

Paul
Sounds like water hammer.

Is there something else that is running during the day that would reduce
the pressure or absorb the water hammer? Could it just be that there is
enough noise during the day that you don't hear it?

If the pressure really is the same at 2:00 AM as it is at 2:00 PM, it sure
is strange that the hammer only occurs in the wee hours of the morning.
 
S

SRN

The upstairs toilet is working perfectly but it frequently makes a loud
noise somewhere down the line when flushed in the middle of the night. It
sounds like someone slammed a door in the basement. This only happens when
I flush it >at night, like around 2:00 a.m. or so, no such noise during the
day.
Any ideas as to why this happens?

Possibly water hammer?? Doesn't usually happen with a toilet fill valve
since they taper off as the tank fills and don't immediately close like a
washing machine water valve, but it's possible....
 
O

Oren

A loud thump, like a door slamming or a large dictionary being dropped on the floor. We're on a well, so the water pressure is in the same range round the clock.
You may be able to adjust the flush valve, depending on the type. Know
the brand name of the valve in the tank?
 
D

danny burstein

In said:
The upstairs toilet is working perfectly but it frequently makes a loud noi=
se somewhere down the line when flushed in the middle of the night. It soun=
ds like someone slammed a door in the basement. This only happens when I fl=
ush it at night, like around 2:00 a.m. or so, no such noise during the day.
Any ideas as to why this happens?
A long shot but it could be that your "water hammer arresters"
are partially malfunctioning.

It's possible they're getting, for want of a better term,
pushed all teh way in overnight (when little water
is used), and partially reset during the daytime when
there's more water activity.
 
P

Pavel314

Possibly water hammer?? Doesn't usually happen with a toilet fill valve

since they taper off as the tank fills and don't immediately close like a

washing machine water valve, but it's possible....
I don't think it's from the fill valve. Here's the sequence: 1, flush toilet; 2, about two seconds later, a loud thump from somewhere way down below, about the time I would imagine the water from the flush to get to the drainpipe which heads out perpendicular from the waste line to the sewer line; 3, at this time the tank has already begun filling.
 
O

Oren

I don't think it's from the fill valve. Here's the sequence: 1, flush toilet; 2, about two seconds later, a loud thump from somewhere way down below, about the time I would imagine the water from the flush to get to the drain pipe which heads out perpendicular from the waste line to the sewer line; 3, at this time the tank has already begun filling.
Um, A water pipe has come loose from the stud? Fastener pulled away?

.... could be mistaken for water hammer...
 
W

willshak

Pavel314 said:
The upstairs toilet is working perfectly but it frequently makes a loud noise somewhere down the line when flushed in the middle of the night. It sounds like someone slammed a door in the basement. This only happens when I flush it at night, like around 2:00 a.m. or so, no such noise during the day.

Any ideas as to why this happens?

Paul
I'm not being funny, but don't flush at the 2 AM time and see if the
noise happens in the morning flush.
I suffer from an enlarged prostate and my nighttime visits happen around
4 AM (no noise though).
I too have a well.
 
H

hrhofmann

I would shut off the water into the toilet and then do my usual 2 am flush.If the noise is still there, it is obviously something to do with the drain line. If the noise is not there, it is in the water supply system. This is so obvious a way to troubleshoot!!!!.
 
P

Pavel314

Um, A water pipe has come loose from the stud? Fastener pulled away?



... could be mistaken for water hammer...
I'll go down to the basement and check that out. This is an old house with old plumbing so something might have worked loose.
 
P

Pavel314

I would shut off the water into the toilet and then do my usual 2 am flush. If the noise is still there, it is obviously something to do with the drain line. If the noise is not there, it is in the water supply system. This is so obvious a way to troubleshoot!!!!.
Good idea!
 
O

Oren

Buy a "mechanic's stethoscope" for $10 to $15 in any place that sells
mechanic's tools:

http://tinyurl.com/pd3tqvp

A mechanic's stethoscope allows you to pinpoint the source of noises.
A good tool to have. I actually have a medical stethoscope (old) that
is still in good condition. Can't remember how I came about having it.
 
J

jamesgang

Please let us know what the noise sound turns out to be.

I have seen hot/cold water cause drain pipes that were in a bind to make noise as they expanded or contracted. Could be that when not used for a while your drain warms up then when the cold water hits it, it makes a noise contracting.

I once had to enlarge a hole in the ground floor around a drain coming fromthe 2nd story that made noise as the shower hot water warmed it up. It was binding in the original hole and when it expanded enough to over come that it would bang periodically.
 
B

Bob F

Pavel314 said:
I'll go down to the basement and check that out. This is an old house
with old plumbing so something might have worked loose.
It could be something that varys in temperature during the day, and the sudden
chill of water down the pipe shrinks the pipe causing a pipe joint to pop where
it goes through a floor or something like that.
 

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