heater vent through pole barn roof

[gj67stang]

I am getting ready to install two hanging propane heaters in my workshop - a 50k BTU and a 75k BTU. Both require 3" B-vent and due to location, horizontal venting is not an option, so vertical through the roof is my only option. Now I am looking for some pictures of how folks have dealt with flashing through a typical pole barn metal roof. I am familiar with the techniques for a shingle roof, but I've never dealt with a ribbed metal roof before.

 

[catsass]

If you have access to the same ribbed metal, use that and overlap the lower piece. Be sure to use a rain cap and storm collar.

Sent from my SPH-D710 using Tapatalk

 

[anthony666]

 

[tgb]

That flashing Anthony showed was the way to go they are designed for bending around they ribs with that soft aluminum on the edge of the rubber.

 

[mygarageone]

They actually make a high temp rubber flashing for A & B vent and no storm collar required

 

[Shop Specialties]

Dektite rubber boot.

 

[Jbullfrog]

What are you doing going through the ceiling and insulation? I went through the wall with a thimble to avoid going thru the ceiling and roof.

 

[gj67stang]

Thanks for the ideas.

If I were to vent horizontally, one vent would exit onto the prevailing-wind wall and the other would exit under a 12' lean-to - both of which are not desirable. I plan to use a modified thimble to trim the vent through the ceiling and then space the cellulose away from the vent with a piece of 6" duct (or similar).

 

[Jbullfrog]

Thanks for the ideas.

If I were to vent horizontally, one vent would exit onto the prevailing-wind wall and the other would exit under a 12' lean-to - both of which are not desirable. I plan to use a modified thimble to trim the vent through the ceiling and then space the cellulose away from the vent with a piece of 6" duct (or similar).

I had to deal with my ceiling insulation for my Harvey exhaust system. I attached the 4" slide gates to the ceiling steel and then screwed a section of 10" furnace duct to the top side around it. I taped the vapor barrier to the 10" to keep the blown in insulation from the exhaust duct work.