Water Leak

  • Active since 1995, Hearth.com is THE place on the internet for free information and advice about wood stoves, pellet stoves and other energy saving equipment.

    We strive to provide opinions, articles, discussions and history related to Hearth Products and in a more general sense, energy issues.

    We promote the EFFICIENT, RESPONSIBLE, CLEAN and SAFE use of all fuels, whether renewable or fossil.

WVMountains

New Member
Oct 30, 2025
6
West Virginia
Hello everyone,

I am new to this forum so please excuse me if I have posted this in the incorrect location. I have recently installed my woodstove in a new location in my house and have installed the pipe through the roof. Whenever it rains I get the tiniest drip of water coming down into my house. I have attached a picture for reference. There is no water in the ceiling box as I have checked this numerous times. There is no water coming down the inside of the piping either. The water seems to be trickling down the exterior stainless steel pipe and then dripping onto my stove. I have sealed thoroughly where the pipe goes through the rubber boot on my metal roof. I am perplexed. The only thing I could possibly think of is that water is somehow getting between the seams on the stainless steel pipes. Should those 36 inch seams be sealed with high temperature sealant? Or could it be a rain cap issue?
[Hearth.com] Water Leak


Any help is appreciated!

Thank you,
Shane
 
  • Like
Reactions: Burnin Since 1989
The pipe is vertical, all the way? Can you post a pic of where the chimney goes through the roof? Cap? etc. If the exterior chimney is installed correctly it's pretty impossible for water to get into the inside of the pipe. From your pic, it's from the outside your pipe. Mine has leaked occasionally from where the chimney passes through the roof flashing, around the pipe. I just resealed it and it was good.
 
Yes. The pipe is vertical all the way. I don't have any great pictures on me right now. I can get some when I get home tonight. I am attaching a picture of the boot. I have a storm collar that I will be installing this weekend as I thought that may be the issue.
[Hearth.com] Water Leak
 
  • Like
Reactions: Burnin Since 1989
Recheck where the rubber meets the metal roof. Chances are the water is coming in between the ridges on the flat sections of the metal.

I had pulled my chimney early in the summer and stuffed an upside down plant pot in the chimney hole so I was able to stick my head up thru where the chimney once was and see the water coming in on the flat section between the ridges. I cleaned off all the caulk and roofing tar that was around the perimeter of the rubber boot and applied a small bead of roofing tar around the boot base and only as high as the thickness of the base, about 1/8”.

Worst part of the job was cleaning up the old caulk and roofing tar, Varsol and a bunch of rags worked after the excess was scraped off.
 
The pipe is vertical, all the way? Can you post a pic of where the chimney goes through the roof? Cap? etc. If the exterior chimney is installed correctly it's pretty impossible for water to get into the inside of the pipe. From your pic, it's from the outside your pipe. Mine has leaked occasionally from where the chimney passes through the roof flashing, around the pipe. I just resealed it and it was good.
I added the storm collar today. I’m going to post some pictures. I’ll do a water test tomorrow with my hose and hopefully everything is good to go.
 

Attachments

  • [Hearth.com] Water Leak
    IMG_4945.webp
    333.3 KB · Views: 26
  • [Hearth.com] Water Leak
    IMG_4946.webp
    166.9 KB · Views: 26
  • [Hearth.com] Water Leak
    IMG_4947.webp
    170.4 KB · Views: 23
  • [Hearth.com] Water Leak
    IMG_4948.webp
    203.4 KB · Views: 23
  • Like
Reactions: Burnin Since 1989
Can water get in at the ridge cap and then run down under the metal roofing?
 
Can water get in at the ridge cap and then run down under the metal roofing?
No. The inside of my addition is unfinished currently so I can see the underside of the Metal roofing. It was just a couple of drips coming down the stainless pipe during heavier rains. I’m hoping the storm collar and the extra sealant did the trick. I’m going to water test it tomorrow.
 
  • Like
Reactions: Burnin Since 1989
Well I installed the storm collar yesterday and sealed that real good and sealed where the pipe goes through the boot again. Got some rain today and I still got a few drips coming in. For the amount of rain we got today just getting a few drips shows it must be a tiny hole somewhere. My dad and I both seem to think the issue is above the pipe where the water lays prior to spilling over the ribs in the metal roof. I don’t know what else to do at this point. I’m not going to rip everything out heading into winter. I might have to deal with it until spring or summer when I can tear it all out. I’m out of ideas.
 
Loose screw possibly? Maybe going up and making sure all of them are snugged up?
 
Did you apply sealant on the base of the boot where the boot meets the metal? I’ve used caulk the comes in a roll and used enough that when you start screwing the boot down it oozes out.

Next spring when you get into it pull the chimney out thru the boot leaving it in place and try the water test. If the boot is leaking you will be able to see exactly where the water is entering. A suitable sized diameter garden pot stuffed in the hole where the chimney was will allow you the option to leave the chimney out for multiple days…takes the pressure off to do the job in one day.
 
I never used butyl tape on the overlap of the panels,I had a small leak like yours,I used caulking along the overlap seam by the chimney,issue solved,hope I made sense