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Started By
Message
ot plumbers......possible "water hammer" issue
Posted on 3/26/16 at 1:57 pm
Posted on 3/26/16 at 1:57 pm
We bought a new house about a month ago. It is 10 years old. We don't use the guest bathroom very frequently but 3 times I have flushed the toilet and about 3 seconds later it sounds like someone is punching the wall from the inside of the wall. It stops when I turn the water off under the toilet. I don't know shite about plumbing but a little research tells me it may be "water hammer". does this sound correct? if so, what are my options? The house did come with a 1 year home warranty, I haven't read into it on what it does or does not cover.thanks
3
Posted on 3/26/16 at 1:59 pm to redneck
Sounds like maybe the builders didn't strap the supply lines to a 2x4.
Posted on 3/26/16 at 2:00 pm to Roman Candle Tag
it's weird because it does not do it every time. maybe 1 of every 5 times it is flushed
Posted on 3/26/16 at 2:08 pm to redneck
Probably water hammer related to your fill valve in your toilet. try turning on the water in the bathroom sink to see if it does that.
If you have a home warranty, hit them up now to see if this would be covered.
If you have a home warranty, hit them up now to see if this would be covered.
Posted on 3/26/16 at 2:10 pm to redneck
My plumbing experience is limited, so I can only speculate. Maybe there is some trapped air in the lines that can be purged.
Good luck.
Good luck.
Posted on 3/26/16 at 2:19 pm to redneck
quote:
it's weird because it does not do it every time. maybe 1 of every 5 times it is flushed
Has to do with the temperature outside. If it is cold, the warmer water will expand the copper piping, causing it to vibrate ("hammer") some.
Have you tried turning your main water valve off, running one of your taps to get out the remaining water out of your lines, and then turning the main valve back on? The new water in your lines may help chase out any air pockets currently in there.
Posted on 3/26/16 at 2:22 pm to TheDude321
quote:
Has to do with the temperature outside
I didn't even think about this being a possibility
quote:
Have you tried turning your main water valve off, running one of your taps to get out the remaining water out of your lines, and then turning the main valve back on? The new water in your lines may help chase out any air pockets currently in there.
I have not. I will give this a shot. Thanks for the input!
Posted on 3/26/16 at 2:35 pm to redneck
quote:
I didn't even think about this being a possibility
The hotter the water that you're running through the tap, the more it will vibrate--especially if it is very cold outside.
quote:
I will give this a shot.
If it doesn't work, you can try opening your walls and strapping your pipes more thoroughly to the joists to limit the vibrations or better yet cover the pipes with insulation so they'll be padded when vibrating, reducing the sound--the insulation will also protect your pipes from freezing, so insulation will help in two ways here. The most permanent solution would be to install a water hammer arrestor, but you might need to bring in a plummer to do that.
Posted on 3/26/16 at 3:52 pm to Roman Candle Tag
quote:
Sounds like maybe the builders didn't strap the supply lines to a 2x4.
Posted on 3/26/16 at 4:09 pm to redneck
Water hammer, or "the Estwing effect, is caused by the inertia of the water that is not in motion wanting to stay unmoved. It moves the pipes around when not properly secured.
Are you sure it is in the wall or could it be at the ninety degree bend at the top of the wall? I ask because a can of spray foam is way easier than tearing the drywall out.
Are you sure it is in the wall or could it be at the ninety degree bend at the top of the wall? I ask because a can of spray foam is way easier than tearing the drywall out.
Posted on 3/27/16 at 1:24 pm to Hangit
quote:
Water hammer, or "the Estwing effect, is caused by the inertia of the water that is not in motion wanting to stay unmoved
I think you have that backwards though the inertia part is correct. It is a fluid in motion suddenly stopped that typically causes the problem. The less compressible the fluid is, the more problematic. So gasses typically exhibit little or no issues. This is why closing a valve typically causes the problem but poorly placed elbows and tees can also cause an issue and systems with associated pumps can also induce problems through pulsation but that is rare in a home. Pulsation when opening valves is typically caused by air in the pipe.
Posted on 3/27/16 at 2:41 pm to redneck
Change the "guts" inside the toilet
Posted on 3/27/16 at 2:55 pm to ct4lsu
quote:
Change the "guts" inside the toilet
I think that's where things will end up.
This post was edited on 3/27/16 at 2:56 pm
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