Installing a chimney through polycarbonate glazing in a greenhouse

[MtnBURN]

As the title says....I'm looking at options for installing a 6" pipe through the roof of a greenhouse. (a geodesic dome)

A few details:
The polycarb is 1/2" thick (16mm) 5 wall.
550 sq ft of floor space
It's 12ft 6" from the floor to the ceiling and it would be a straight run of pipe.
The stove will likely be either an Englander 13 nch or Madison.

I'd love to hear some ideas. Would you use a silicone boot in such an application or a more standard approach? I have some ideas but (all of them may be wrong...LOL) it would be nice to hear other thoughts/suggestions or from someone who has gone through a thin metal roof or polycarb roof in the same fashion. Thinking single wall up to a point...then transition and go through the roof. How hot do you think the flue might be 12 ft up?

Ideas appreciated. it's getting da mn cold out there... ;-)
.

 

[MtnBURN]

57 views.....no replies/etc.

LOL...it looks like we may have stumbled into an area where there are no online "experts"???? Honestly?

>Totally amazing<<<....and definitely a first in my 20+ years of Internet access....

onward, through the fog!

 

[coldkiwi]

Plenty of experts here but probably no one has gone thru a polycarb roof.Can you cut a big enough square to install a ceiling box,You are going to have to dissipate the heat before it hits the polycarb.

 

[quotejso]

You are going to have to support the pipe somehow. What is the melting point of polycarbonate. I don't think it will hold much heat but good luck sounds like a challenge.

 

[fespo]

Well I did it a few years ago I took out a square of polycarbonate from frame to frame and about 24" long. I rested that on the metal frame then cut out the hole for the flue and added the storm collar. Never melted anything. I will follow up time to leave for work