Roof Shingle Clearance

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glassmanjpf

glassmanjpf

Member
Apr 4, 2006
226
Long Island, NY
My chimney comes horizontal out the back of my stove and tees up about 20 feet pretty much at the center of my house. In other words if your outside looking at the side of my house the chimney would run up right at the ridge beam...sorry no pic it's dark out. Just had my roof replaced and the roofer left about a half inch clearance at the shingle overhang to the double wall pipe. Realizing I would trim it back a little more this weekend, what temperature would be at the top of the run (actually 3 feet down). This is all outside not in any chase. Want to be safe but wifey wants the heat too.

Thanks...
 
Most likely you would be fine, but it should be 2" away. I know shingles are not combustibles but it should be farther away. The temp of the outside of that pipe, that high up, outside, in the cold, should be cool, it wont be hot to touch. Trim it back, play it safe.
 
The temperature of the pipe 20' up in the air will be alot cooler than where it exits the house. I don't think you have much to worry about. Maybe trim back the shingles a little. I assume there are some sort of brackets attaching the chimney to the house? Maybe you could add some sort of spacer or shim to sort of angle the chimney away from the roof more. If you do that you will probably have to increase the screw length just an idea
 
Thanks...I know the right thing but always like to hear what others may have to say. As always said ..... better safe than sorry. Did get the stove up to 450F. Went up on the ladder and it felt slightly warm. Will trim it back a bit this weekend

Happy and a Safe New Year to All!
 
With the proper roof base flashing around that pipe, heat should not be an issue. You do have a base flashing, right?
The shingles underneath the base (at bottom flashing are cut to the opening of the hole in the roof decking, the remainder are run up to the base flashing vertical portion and trimmed back about a 1/2" to let debris wash down.
 
Hogwildz said:
With the proper roof base flashing around that pipe, heat should not be an issue. You do have a base flashing, right?
The shingles underneath the base (at bottom flashing are cut to the opening of the hole in the roof decking, the remainder are run up to the base flashing vertical portion and trimmed back about a 1/2" to let debris wash down.
Click to expand...
Hogwildz
No base flashing. Pipe comes straight through the wall with proper clearance then up the exterior of the house. Doesn't go through roof decking.
 
Ah, my mistake, thought it was coming through the roof. Make sure you leave enough shingle over hang at the edge, or that could create another problem.
That pipe ain't goign to be no where near hot enough to hurt the shingles. They actually get a lot hotter in the summer from sun exposure, then they will from the pipe.
 
Hogwildz said:
With the proper roof base flashing around that pipe, heat should not be an issue. You do have a base flashing, right?
The shingles underneath the base (at bottom flashing are cut to the opening of the hole in the roof decking, the remainder are run up to the base flashing vertical portion and trimmed back about a 1/2" to let debris wash down.
Click to expand...

that would be the right way to do it - should have had you come out to shingle my roof (and maybe tune up the guys who did the flashing)
 
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