Home Page link

Cutting cast iron pipe w/o causing roof leak

Home| Search | About
Login Password
Register Now! Lost Password?

Home Repair - - If it ain't broken, don't fix it. Otherwise look here. 

Page 2 of 3       < 1 2 3 > last >> Bookmark this page:  YahooMyWeb Yahoo!  Google Google  Windows Live Favorites Windows Live  del.icio.us del.icio.us  digg digg  Add to Netscape Netscape
Subject Author Date
Cutting cast iron pipe w/o causing roof leak Mikepier 09-20-2007
If you were  Registered and logged in, you could reply and use other advanced thread options
Posted by on September 20, 2007, 2:44 pm
wrote:

>On Thu, 20 Sep 2007 08:34:26 -0700, Mikepier wrote:
>
>> I have to cut off a section of cast iron waste pipe in my attic to tie
>> in a vent .My concern is when I cut off the section of pipe, the
>> weight of the upper part of pipe would cause it to possible come
>> loose from the roof flashing and sink, thus causing a roof leak. The
>> last thing I want to do is open up a can of worms by doing this job. I
>> was wondering if I should be concerned or if anyone else has done a
>> job like this, what advice to offer. Thanks
>
>
>
>You didn't state exactly where you are working on the vent pipe. Chances
>are you will see very little, if any, movement if you work below existing
>vents tied into the main pipe. It would still be a wise choice to secure
>the uppermost part of the pipe with strap supports designed to hold pipes
>securely.
>
>A reciprocating saw would seem to move the pipe less than doing so with a
>handsaw.
>
>I did exactly what you are doing several years back. That vent was cast
>iron. I had to cut the pipe in the basement to reroute tub and stool.
>There were enough pipes above me to support the vent without moving.
>
>Reflashing or caulking the existing flash when done makes sense.


If all you are doing is adding a vent, you can buy strap around
devices. Then cut a square hole in the cast pipe with an angle
grinder and attach the "strap on". You dont need to cut the whole
pipe. After all, it's only a vent.

Posted by Mikepier on September 20, 2007, 3:01 pm
On Sep 20, 2:44 pm, alvinamo...@notmail.com wrote:
> wrote:
>
>
>
>
>
> >On Thu, 20 Sep 2007 08:34:26 -0700, Mikepier wrote:
>
> >> I have to cut off a section of cast iron waste pipe in my attic to tie
> >> in a vent .My concern is when I cut off the section of pipe, the
> >> weight of the upper part of pipe would cause it to possible come
> >> loose from the roof flashing and sink, thus causing a roof leak. The
> >> last thing I want to do is open up a can of worms by doing this job. I
> >> was wondering if I should be concerned or if anyone else has done a
> >> job like this, what advice to offer. Thanks
>
> >You didn't state exactly where you are working on the vent pipe. Chances
> >are you will see very little, if any, movement if you work below existing
> >vents tied into the main pipe. It would still be a wise choice to secure
> >the uppermost part of the pipe with strap supports designed to hold pipes
> >securely.
>
> >A reciprocating saw would seem to move the pipe less than doing so with a
> >handsaw.
>
> >I did exactly what you are doing several years back. That vent was cast
> >iron. I had to cut the pipe in the basement to reroute tub and stool.
> >There were enough pipes above me to support the vent without moving.
>
> >Reflashing or caulking the existing flash when done makes sense.
>
> If all you are doing is adding a vent, you can buy strap around
> devices. Then cut a square hole in the cast pipe with an angle
> grinder and attach the "strap on". You dont need to cut the whole
> pipe. After all, it's only a vent.- Hide quoted text -
>
> - Show quoted text -

Is there a place online I can find out more about this?


Posted by JoeSpareBedroom on September 20, 2007, 3:03 pm
> On Sep 20, 2:44 pm, alvinamo...@notmail.com wrote:
>> wrote:
>>
>>
>>
>>
>>
>> >On Thu, 20 Sep 2007 08:34:26 -0700, Mikepier wrote:
>>
>> >> I have to cut off a section of cast iron waste pipe in my attic to tie
>> >> in a vent .My concern is when I cut off the section of pipe, the
>> >> weight of the upper part of pipe would cause it to possible come
>> >> loose from the roof flashing and sink, thus causing a roof leak. The
>> >> last thing I want to do is open up a can of worms by doing this job. I
>> >> was wondering if I should be concerned or if anyone else has done a
>> >> job like this, what advice to offer. Thanks
>>
>> >You didn't state exactly where you are working on the vent pipe.
>> >Chances
>> >are you will see very little, if any, movement if you work below
>> >existing
>> >vents tied into the main pipe. It would still be a wise choice to
>> >secure
>> >the uppermost part of the pipe with strap supports designed to hold
>> >pipes
>> >securely.
>>
>> >A reciprocating saw would seem to move the pipe less than doing so with
>> >a
>> >handsaw.
>>
>> >I did exactly what you are doing several years back. That vent was cast
>> >iron. I had to cut the pipe in the basement to reroute tub and stool.
>> >There were enough pipes above me to support the vent without moving.
>>
>> >Reflashing or caulking the existing flash when done makes sense.
>>
>> If all you are doing is adding a vent, you can buy strap around
>> devices. Then cut a square hole in the cast pipe with an angle
>> grinder and attach the "strap on". You dont need to cut the whole
>> pipe. After all, it's only a vent.- Hide quoted text -
>>
>> - Show quoted text -
>
> Is there a place online I can find out more about this?
>

Open your yellow pages phone book and find a plumbing supply store. Go there
and ask.



Posted by Edwin Pawlowski on September 20, 2007, 4:29 pm

>
> Open your yellow pages phone book and find a plumbing supply store. Go
> there and ask.
>

Oh man, that requires interacting with real people.



Posted by JoeSpareBedroom on September 20, 2007, 4:30 pm
>
>>
>> Open your yellow pages phone book and find a plumbing supply store. Go
>> there and ask.
>>
>
> Oh man, that requires interacting with real people.


I'm gettin' a headache just thinking about it.



Page 2 of 3       < 1 2 3 > last >>
Similar ThreadsPosted
Installing pipe boots on roof. RE: was cutting cast iron pipe in attic September 25, 2007, 9:49 am
Cutting (or breaking) cast iron pipe March 1, 2007, 10:34 pm
Cutting old, delicate cast iron waste pipe October 6, 2005, 5:53 am
Cutting cast iron vent stack January 2, 2007, 1:41 pm
cutting into cast iron waste stack March 25, 2007, 8:30 pm
Cast iron pipe rust July 26, 2007, 12:46 am
Cast Iron Pipe Repair? July 26, 2007, 8:42 am
Supporting Cast Iron DWV Pipe April 9, 2008, 2:40 pm
PVC into cast iron sewer pipe September 27, 2008, 11:23 am
cast iron pipe repair question April 12, 2006, 2:27 pm

Contact Us | Privacy Policy

XML SitemapXML Sitemap