What is a stub out?? My contract calls for contractor to have the plumber "stub-out" a bathroom (1/2 bath) in the attic. I anticipated a capped off place for toilet and a capped off drain and water pipes for a sink plus vents. Don't see any thing and I get some circular logic from the contractor. Is there a generally accepted definition?
Thanks in advance

Hi Peter,

"What is a stub out???"
A stub-out is just that. Technically it means a capped off pipe or pipes coming out of the wall or floor that's to be connected to fixtures.
In fact it means that you rough in a job preparing it for adding fixtures at trimout. You connect the drainage and water so that all the installer has to do is trim out the job connecting fixtures.
" I anticipated a capped off place for toilet and a capped off drain and water pipes for a sink plus vents."

I agree with everything except the vent. When we stub out for a basement rough in typically we don't run a vent out the roof.
That's done at the time the rough-in is trimmed out. However, a attic rouigh in is so close to the main roof vent it would be foolish not to revent back to the main from a attic rough-in.
A stub-out has to have stub-outs to be called one. Call your plumber back.
Please keep me in the loop with this one. Regards, Tom

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Originally Posted by speedball1

A stub-out has to have stub-outs to be called one. Call your plumber back.
Please keep me in the loop with this one. Regards, Tom

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Many thanks for confirming what I thought I knew. Actually we hired a contractor to build the house. He hired the plumber. The plumber did good and just what he was told. My fight is with the contractor.

Our contract calls for a 1/2 bath stub out in the unfinished attic space. They say the pipes are there under the decking and that's what they call a stubout. I was going to let it go but it looks like I am going to have to sue to finish the punchout list. To make it a big enough case to afford a lawyer and the time to sue I have to include the many little things I'd have just blown off. I would guess his expense of a few hundred dollars for material and a man for a day or two is going to end up costing several thousand dollars. Oh well, its his choice!! :D

I just wanted to make something clear; stubouts are to prevent hydraulic shock within the water lines. This is also known as water-hammer. Yes, it is also used for anticipated additions to a water system, but more importantly, it prevents hydraulic shock, which causes your waterlines to bang against each other, and the wall. Over time, this could cause your joints and other connections to break loose and leak.
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Originally Posted by Peter Jones

Many thanks for confirming what I thought I knew. Actually we hired a contractor to build the house. He hired the plumber. The plumber did good and just what he was told. My fight is with the contractor.

Our contract calls for a 1/2 bath stub out in the unfinished attic space. They say the pipes are there under the decking and that's what they call a stubout. I was going to let it go but it looks like I am going to have to sue to finish the punchout list. To make it a big enough case to afford a lawyer and the time to sue I have to include the many little things I'd have just blown off. I would guess his expense of a few hundred dollars for material and a man for a day or two is going to end up costing several thousand dollars. Oh well, its his choice!! :D

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Hello Carson,

First of all welcome to this wonderful web site.
Second you respond to a more than seven years old thread always check the date on left upper corner before you respond.
Third you don't know what stub out is for your information I added to links to show you both the stub out and the water hammer arrester, Thanks.

John

https://www.google.com/search?q=stub...q=water+hammer

https://www.google.com/search?q=stub...A&ved=0CDwQsAQ