clearance otra vez

[Jim Baird]

This "boot" is adhering to a flue pipe clearly labeled 2" clearance to combustible.  Could find no label on boot.  Does anyone here know this boot?

[Marc]

I've seen them but never on a flue.

See the dirt?  Water pools there.  The boot should not bridge two crests.  It's incorrect.

[Jim Baird]

That size boot has to span that much.  My concern is the boot material being combustible.

[Bill Kibbel]

Brick-red boots and some gray are silicone based, not rubber or epdm, and usually listed for high temp applications (400+F).  

[Jim Katen]

I've got one in my shop that's listed for 500 degrees F. 

 

 

[Jim Baird]

Thanks for the replies, guys.

I guess my only question now is whether "high temp rating" qualifies as "non-combustible".

[Jim Katen]

I'm perfectly fine with seeing a red silicone boot on a B-vent. Even at 500 degrees, it's not going to combust, just deform.