[OG.Gotti]

I'm going to start building my new rooms this weekend.. This will be my first go at sealed rooms with co2.. Need to know how to go about sealing them up and how often to exhaust.. Anything else you guys can think of.. Any and all help is greatly appreciated..

[TychoMonolyth]

I'm investigating now also. This looks good with good options.

https://www.youtube.com/watch?v=4jkkCDUhpNI

But I'm subbed to this because I want to hear the lessons learned.

I will be using rockwool batt insulation, vapor barrier and Colman Emergency Blankets from walmart (Mylar) for the reflective finish.

[Snook]

Originally Posted by OG.Gotti

I'm going to start building my new rooms this weekend.. This will be my first go at sealed rooms with co2.. Need to know how to go about sealing them up and how often to exhaust.. Anything else you guys can think of.. Any and all help is greatly appreciated..

long time ago i learned that sealing a tent isnt possible but you didnt say anything about a tent, so thats just information. The other thing I remember, I think, is there is no exhausting in a sealed environment. the co2 is the air that just gets filtered and circulated within the 'room'. there will be more members with more answers... GL.

[Pinnate]

Originally Posted by OG.Gotti

I'm going to start building my new rooms this weekend.. This will be my first go at sealed rooms with co2..

I like my plants to have as much fresh air as possible!

Since it is their natural environment, tampering with it would seem to open the possibility of unforeseen consequences...

[ChemDgMillionre]

As Snook said, a sealed room is a sealed room. No transfer of air in or out. You’ll need to control the environment 100%, that means dehumidifier, heating & cooling, co2.

Ive been running sealed rooms forever, no comparison when it comes to controlling the environment & keeping programs on track without hiccups.

[Lester Beans]

Exactly, sealed means no intake or exhaust.

Make sure your hoods are sealed well if running air through them to cool. Lots of people forget that and the air exhausting the hood heat sucks the co2 out with it around poorly fitted glass.

[Maple_Flail]

I can't speak from the aspect of Co2 enrichment, it ain't my thing, but not getting down on anyone who does.

Coming from a construction point of view, My experience comes in environmentally sealed recording studios. Where humidity, temperature swings and air filtration were all controlled to separate it from the buildings used (there was comunal air vents in some, vast swings of temps due to some places having door open in winder and the next having the heat cranked {the units to the left and right} ) and the studio owner wanted to protect the value of certain items and those environmental swings would cause degradation.

There are many ways you can get a proper seal, many depend on the material your essentially box in a box in a box is resting on. (it concrete? or wood flooring etc)
In a studio space this sort of isolation requires ALOT of space, how ever much of this, ie, floating floors, satellite cooling and filtration, are not required in a show room.

but you will need vapor barrier, many types(or grades) of insulation, Lots of wood lots of ducting, lots of planning and once you make a blue print stick to it.

External to internal and vice versa Radiators (fluid in closed loop, pumps two copper rads) is a great way of cooling air at a lower cost to mitigate AC costs. even if 10% of the heat is taken away over all that is 10% less energy needed to be spent on an ac and only 2% of that saved energy to keep that 10% reduction incheck

[eebbnflow]

There are 2 ways .#1 the best way , sealed room with AC/co2 . No exhaust ! No venting !
The room should have insulation, vapour barrier . And a gold solid door with tight seal . Caulk all the seems on floor ect .

I will also say you never mentioned a tent , that is good I wouldn’t bother ...

#2 Venting with Co2 injection . This way I have never done but always mentioned in grow books for am example you would run your exhaust fans to control temps . The exhaust fans would shut off on a timer or controller for roughly 20 mins while the co2 turns on and fills the room with co2 and the plants can enjoy . The timing Varies and you would dial it in as you go .(does anyone even do this anymore )?

I’d also not use air cooled hoods unless you go with #2 cool tubes can be easier to seal vs a hood tho . but still then you have to wonder if your duct hose has a pin hole ...

100%sealed with AC is best . I would not go any other way . It also really helps with containing smells ! And keeping bugs out .

Next winter will be my first winter going sealed with AC never going back to exhaust fans !

[MrBungle]

why not use flex duct that is insulated or hard pipe with duct sleeves?

[Mikell]

Sealed and unsealed isn't black and white. Some people vent every few hours or during lights off.