Ventilation through the roof

watsupbud

Active Member
If i was venting hot air through a 10inch ducting through the roof with a roof vent, will steam show coming out from the roof during the winter season?
 

hellraizer30

Rebel From The North
In the winter people use some form of heat right ? So 99% of heaters have a venting system, just go up in
You attic and find the Ducting and tie into it with a tee or something, and it wont matter if theres steam
Its in a normal spot to have it
 

watsupbud

Active Member
In the winter people use some form of heat right ? So 99% of heaters have a venting system, just go up in
You attic and find the Ducting and tie into it with a tee or something, and it wont matter if theres steam
Its in a normal spot to have it
I kinda get what your saying, so the hot air is vented outside somewhere but through the heated ducting from the heater?
what happens if i vent it straight out the bathroom ceiling through the roof (10inch diameter) will this create a large amount of steam during the winter time? about 6-10 1k lights being vented.
 

hellraizer30

Rebel From The North
Are you saying your going to vent 6 to 10 1k light holy hell dude thats alot of heat!!
You got another issue to deal with and thats how to supply enough amps to power
All that lol
 

watsupbud

Active Member
Are you saying your going to vent 6 to 10 1k light holy hell dude thats alot of heat!!
You got another issue to deal with and thats how to supply enough amps to power
All that lol
i have enough, i have about 125amps free. If i vent out the roof with ducting will this raise any suspicion because of steam during the winter season? and as far as your option, are you saying find the ducting from the heater and link them together so it goes out the house the same way?
 

mrmadcow

Well-Known Member
careful about tapping into the heating exhaust duct. when your fans are off, the heaters exhaust will work its way back into your room & when fans are on, they may overpower the furnace & not allow it to vent outside.
can you build a room to exhaust into then blow the air outside? giving it a chance to cool off.
 

ak.fortyseven

Well-Known Member
It depends how your light cooling ducting is setup on how much moisture will be in the air being exhausted. If you are drawing the air to cool the lights from within the grow area it will carry allot of moisture and show up as steam when it hits the cooler outside air. If you have a light cooling setup where it draws air from outside the grow area it will carry much lower amounts of moisture and produce little steam.
 

watsupbud

Active Member
careful about tapping into the heating exhaust duct. when your fans are off, the heaters exhaust will work its way back into your room & when fans are on, they may overpower the furnace & not allow it to vent outside.
can you build a room to exhaust into then blow the air outside? giving it a chance to cool off.
i was thinking about blowing the hot air into the restroom and have it vented through the roof, but i was concerned about the steam showing during the winter. any ideas on how to fix this?
 

watsupbud

Active Member
It depends how your light cooling ducting is setup on how much moisture will be in the air being exhausted. If you are drawing the air to cool the lights from within the grow area it will carry allot of moisture and show up as steam when it hits the cooler outside air. If you have a light cooling setup where it draws air from outside the grow area it will carry much lower amounts of moisture and produce little steam.
i guess i wouldnt go that route than...what would you suggest?
 

watsupbud

Active Member
or drraw dry air to vent your hoods, b ut you still hvae to vent your scrubber and room exchange
how would i use the dehumidifier? and by saying draw dry air to vent my hoods, ex, do u mean like running ducting from another room and into the room and through the lights and out the roof?
 

ak.fortyseven

Well-Known Member
exactly, cool the hoods w/ dry air. but you need to still exchange the room air, or you can eliminate that by adding an a/c(which will discagre dry heat) and co2 and have a sealed grow. got the cash? i can help you build it...
 

ssj4jonathan

Well-Known Member
Do you have an insulated attic? Why not vent hot air into attic space (by disconnecting bathroom ducting) and let it diffuse out the open vent, instead of ducting straight to the outside?

Are you venting entire grow room air and/or closed light hoods/tubes?

EDIT: If this was my setup, I would use bathroom vent for cold air intake for light tubes then vent hot air directly into attic. With a closed grow room you could use CO2 sytem and an a/c in room with no problem. Water damage to roof and ceiling from 50-80 percent humid hot air? Maybe after years of venting. Moisture will soak into insulation but that's the whole point... Less humidity exiting out of the roof..
 

ak.fortyseven

Well-Known Member
Do you have an insulated attic? Why not vent hot air into attic space (by disconnecting bathroom ducting) and let it diffuse out the open vent, instead of ducting straight to the outside?

Are you venting grow room air and/or closed light hoods/tubes?
are you considering the mass amounts of moisture rotting your cieling and roof?
 
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