Combustion air enters through the outer pipe and the inner pipe acts as the vent for hot gases.
How to vent gas fireplace through roof.
You ll need these parts to transition from the stove pipe in the room to the chimney pipe above the ceiling.
Carefully move fireplace with vent as sembly attached toward wall and insert vent pipe into horizontal termination.
Here s how it works.
As the names imply these parts bear the vertical weight of the chimney components.
For instance wood burning stoves will always be vented through the roof of your house but pellet burning stoves can be vented vertically through the roof or horizontally through the wall to the outdoors.
Direct vent gas fireplaces are sealed systems using a double walled vent pipe and a fixed glass face on the firebox.
If you don t own a drywall screw gun rent one for this job about 25 per day.
Apply paper tape embedded in a layer of drywall joint compound to joints without corner bead.
Sand the corners and joints smooth with 100 grit drywall sanding paper.
The pipe overlap should be a minimum of 11.
Wood fireplaces and stoves venting must be terminated to the outdoors vertically.
Additional fire blocking and shields are required at each of those passages.
Same with gas stoves venting can be routed in either direction vertically or horizontally.
Known as a closed system the firebox of a direct vent fireplace is completely sealed with glass either tempered or ceramic.
Fill the area between corner beads with joint compound.
You can find some of these fireplaces here if you re looking for a vent free option you can find some great options here yes the best fireplaces on the market generally use a direct vent venting system.
Apply mastic to connecting vent cap with horizontal vent screwspipe slide wall firestop over vent pipe before connecting horizontal run to vent cap see figure 12.
Even using light weight b vent chimney sections the total weight of the chimney extending up through the roof will require support at one or more locations typically using a ceiling support attic support or roof support system provided by the manufacturer.
Direct vent fireplaces this fireplace style uses a dual venting system either through the roof or a sidewall to bring in outside air for combustion and send combustion by products to the outside of the house.
Natural vent also referred to as b vent hearth products take in combustion air from inside the home and vent products of combustion outside home via a brick and mortar chimney or pipe venting system installed through the roof.
Direct vent fireplaces are best for newer more air tight homes.
Not all fireplaces require venting and some don t require direct vent pipe but the best fireplaces do.
