Hole in rain downpipe
#1
11-25-17, 02:15 PM
Hole in rain downpipe
Seems like the previous owner cut a 1.75" hole as a clear out in this pipe instead of climbing on the flat roof to clear it.
it started leaking today with heavy rain and his previous repair failed. I have had to make a temporary fix with all that the hardware store had which was a 1.25" drain stop.
I used quick set paste epoxy to seal. So it's a pic pvc seal to a slightly rusty cast iron pipe. 3min set, 60cure
I pushed the pvc onto the epoxy and sandwiched it. My worry is that it doesn't make a proper seal.
How does epoxy seal in a situation like this with only slight pressure pushing on the parts?
Btw it's an old house. Ignore the fact there is a drain running through the center of a room!
it started leaking today with heavy rain and his previous repair failed. I have had to make a temporary fix with all that the hardware store had which was a 1.25" drain stop.
I used quick set paste epoxy to seal. So it's a pic pvc seal to a slightly rusty cast iron pipe. 3min set, 60cure
I pushed the pvc onto the epoxy and sandwiched it. My worry is that it doesn't make a proper seal.
How does epoxy seal in a situation like this with only slight pressure pushing on the parts?
Btw it's an old house. Ignore the fact there is a drain running through the center of a room!
Last edited by PJmax; 11-25-17 at 05:56 PM. Reason: added pic from link
#2
11-25-17, 04:25 PM
It appears a larger diameter pipe is just above or sitting on the patch. Could this be causing the leak? A pipe repair clamp will make a better fix, but you will have to go to a plumbing supply for the diameter needed. How is the larger pipe sealed to the smaller pipe. Out of curiousness, how is the pipe sealed at the roof?
#4
11-25-17, 06:13 PM
It's a 4" rain pipe probably shared with the house main waste stack - that's how they used to do it 100 years ago. It's leaking because someone drilled a massive clean out hole in it and the original plug failed! The picture shows the plug I had to repair it with!
Here is how it looked before and why it leaked:
Here is how it looked before and why it leaked:
#5
11-25-17, 06:41 PM
Group Moderator
I would severely doubt it was put in for cleaning. More likely something was connected there. If that drain line was plugged.... putting that hole in as a cleanout would have resulted in a flood.
I would try to locate a rubber plug to put in there.
I would try to locate a rubber plug to put in there.
#6
11-25-17, 08:01 PM
1.75" rubber plug exists? Like a cork style you mean?
think the epoxy will work?
Or epoxy the entire hole and then fiber wrap?
think the epoxy will work?
Or epoxy the entire hole and then fiber wrap?
Last edited by qwertyjjj; 11-25-17 at 08:45 PM.
#7
11-25-17, 08:17 PM
Group Moderator
This would be the style I'm referring to. This is a 10 pack.
10-Pack-CleverDelights-Rubber-Stoppers
10-Pack-CleverDelights-Rubber-Stoppers
