caster iron pipes to quiet rushing water sound

ontariomomApril 23, 2012

Hi all,

I read somewhere that using cast iron pipes can be beneficial to down play the water fall sound that occurs everytime someone flushes. We wondered about a pipe that will go through a wall in our dining room, and whether we should get the plumber to put a cast iron pipe there for sound control. The plumber was not too keen on doing it, and he said the cast iron will rust eventually. Do you think we can get the same effect by just using spray insulation foam, or should we go for the cast iron pipes in this one spot? BTW, it is in an outside wall of a 2 X 6 wall.

Carol

Thank you for reporting this comment. Undo
brickeyee

"the cast iron will rust eventually."

Not in your lifetime.

It is more labor, and harder labor, to install.

    Bookmark   April 23, 2012 at 3:55PM
Thank you for reporting this comment. Undo
ontariomom

Thanks brickeyee for your comments. The plumber did say he would charge $300 extra for cast iron, and I don't think he wanted the extra hassle as our job is already quite big. Do you find cast iron makes a big difference in sound insulation? Can the same effect be had with spray insulation, or is our best option that cast iron pipe. The location of the pipe fall is not well placed given it travels through dining room wall.

Carol

    Bookmark   April 23, 2012 at 4:09PM
Thank you for reporting this comment. Undo
brickeyee

"Do you find cast iron makes a big difference in sound insulation?"

I have installed cast iron lines in a number of higher end homes to reduce drain noise.

Folks with multi-million dollar homes do not want to hear the upstairs toilet flush in the living room.

It works far better than any sound insulation since you are adding the one thing that stops sound cold, mass.

    Bookmark   April 23, 2012 at 4:42PM
Thank you for reporting this comment. Undo
ontariomom

Thank you very much Brickeyee for your expertise. I will contact the plumber and hopeful he will agree to put in the cast iron. We will also have a drain lin in the wall in between the kitchen and hallway. I think this location will not both me as much as the one going through the dining room as we use the dining room every day.

Carol

    Bookmark   April 23, 2012 at 8:21PM
Thank you for reporting this comment. Undo
geller

We have an older (1928) house where cast iron was standard during construction. The previous renovation had a plastic stack running next to the kitchen, and any time the toilet flushed upstairs you could hear the water rushing down. In renovating the kitchen and bathroom, we insisted on cast iron above grade level (it was less important in the basement) to eliminate any noise. Would never do it any other way.

    Bookmark   April 23, 2012 at 9:36PM
Thank you for reporting this comment. Undo
ontariomom

Thanks geller for your helpful input. I think we are going to try for the cast iron pipes as well.

Carol

    Bookmark   April 25, 2012 at 6:00PM
Thank you for reporting this comment. Undo
brickeyee

The older cast iron is quieter, but even new cast iron is still much better than plastic for noise control.

The mass of the pipe itself limits how much noise can be transferred from the water.

    Bookmark   April 26, 2012 at 11:09AM
Sign Up to comment
More Discussions
shower problem....can someone give me a clue?
My hot water plumbing JUST started acting "wonky."...
bevangel_i_h8_h0uzz
Cold Water TOO COLD! What to do?
I know there is a lot of concern over regulating hot...
mrb6228
Fire Sprinkler
Purchasing a home with an indoor fire sprinkler system....
jglo
Pulldown sprayer leaking
My Moen pulldown faucet (with Reflex Technology!) was...
ginny20
New under mount sink - drain off-center?
I had a new granite countertop installed with an under...
mike_lee2
People viewed this after searching for:
© 2015 Houzz Inc. Houzz® The new way to design your home™