Upside down flue pipe?

[Ben H]

I know it's hard to see, but is this sectioned liner in upside down? You can see the end ridges on the connection pipe, right?

I'm talking about the "background" connection, not the one the camera focused on.

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[Chad Fabry]

It's OK. The joints are imbricated to direct creosote back to the firebox.

[Ben H]

Thanks.

[Erby]

Imbricating a wood stove or fireplace flue in the wrong direction allows creosote to flow out onto the exterior of the pipe and down on top of the fire box.

A bad thing!

http://b4uclose.tripod.com/cockamamieph ... k?i=28&s=1

On the other hand, imbrication of furnaces and water heaters is in the opposite direction.

[Jim Katen]

. . . On the other hand, imbrication of furnaces and water heaters is in the opposite direction.

Not really. In a B-vent, the upper liner sleeves inside the lower, just like on a woodstove. If you're using single-wall vent pipe, you should be sleeving it the same way, but few do. The result is condensation that runs outside the joints.

[winecabinet1]

That is OK. I agree with Chad Fabry.

[Chad Fabry]

That is OK. I agree with Chad Fabry.

I have no idea who that poster is, but I know for certain that it is not my wife.