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Built a shed to grow in, it's too hot and need advice

Discussion in 'Growing Marijuana Indoors' started by Novice grower187, Jun 5, 2019.

  1. #1 Novice grower187, Jun 5, 2019
    So i just had a shed built recently, not insulated, which I think is becoming a problem now, but I'm using 2 10x10 tents, one for flower and one for veg. It's been getting hot lately, 85°F outside and pushing 90s+ in the room. The flower room has a portable ac that helps keep it cool but the veg gets super hot but I maintain the roots with cold water so no signs of defects, maybe minus the slower growth, but I'm looking for advice on how to keep the damn shed cool. I'm looking at going with a spray foam insulation because I'm tired of wasting money on other stupid shit to keep it cool so any advice will work. I live in Montana so anyone who knows the weather here knows it gets hot and cold so I'd like a fix all solution for my temp issues so I'm not buying stupid shit like a swamp cooler anymore.

    Long story short, should I completely seal/insulate the building and will that help me control the inside temps more? The shed is a 12'x32'.
     
  2. #2 countrytoker34, Jun 5, 2019
    seal it, use real insulation and drywall inside. Vent your exhaust outside and if it were me I'd buy a window AC unit with heat to cool and heat it. Is the building in shade at all? That would help with cooling.

    Sent from my XT1650 using Tapatalk
     
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  3. #3 Novice grower187, Jun 5, 2019
    No shade and I'm worried about the mold with drywall if the humidity happens to spike badly. So I have a portable ac in the flower room as well as exhaust in both rooms and they are vented to a cut out hole in the wall. It was a windowless shed as well so I even cut a hole and added a shutter fan to push out excess heat but it still gets hot. Also the portable ac is a 12000btu so I'm curious if after I seal it, if it will be enough to keep the building cool as well. I just dont have much experience and want feedback on if the insulation is the key to sealing and controlling the temps, which from my assumption is, or is there something I'm missing and if spray foam insulation is the way to go or maybe even just a 1in r tech insulation board with a high R rating. I'm just in a rut...
     
  4. #4 Smokexbreak, Jun 5, 2019
    If this was me I’d insulate and sheer rock the inside and then spray foam everything. It’s probably overkill but I’d be only wanting to do this once and that would almost guarantee I can keep it heated and cooled. Also..... I’d try and cool/heat the room outside the tent so that the air coming in from the intake fans is cooler than whats being exhausted. The exhausts should draw enough negative pressure to pull in enough cool air if you don’t have intake fans on your tent. But again this is just me and I tend to go overkill. However I know it’s going to work when I do....
     
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  5. #5 countrytoker34, Jun 5, 2019
    Dry/sheet rock same thing, you wouldn't have to worry about mold as long as your not soaking the walls. I'm an indoor closet grower and never had mold on my walls. Of course I oil based painted those walls and lined them with a reflective material.

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  6. #6 Smokexbreak, Jun 5, 2019
    Good call that would be a good preventive measure for moisture. But as long as there’s enough air movement there should be condensation like that. Idk. Even if ya have to get a commercial air mover for the outside of the tent. There’s ways to make this happen.
     
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  7. #7 bryan oconner, Jun 5, 2019
    i would just throw some of this up on the walls of the shed .
    Double Bubble Insulation - White/Foil - 4' X 125' (500 sq ft) this will go up easily and hold the hot air outside and keep the cool air inside. on the bottom of this shed put in a window ac unit tell me how big this shed is and how many watts ? i can suggest a size. so basically cut a hole in the shed throw in the window ac unit . use this stuff to seal it up good .
    GREAT STUFF Insulation Insulating Spray Foam Sealant, 12 oz. Aerosol Can, Cream - 48WK15|157901 - Grainger! and dig a hole if needed for water to drain from the back of the ac .
    i know what size ac you require pm me i have a lot of experience with this. to small run and run. to big run and shut off never getting the humidity out and hurting the ac unit never getting cool run times are to short . i suggest cooling the entire shed area not just a tent . this is more practical and it the only way to do it you have a veg to cool as well. do not buy a portable ac unit they are not half as good as a window ac . a portable 10k is really a 5k cooling do not trust those #s
     
  8. #8 countrytoker34, Jun 5, 2019
    That's true too about the air, just slipped my mind lol. See I use a 6" intake fan and a 6" exhaust exiting outside underneath my place for stealth. I expanded my ducting on my home HVAC to include this room using the a 6" intake booster fan to assist.
    Anyway op if u build it like your home it'll help save on electric. Bare shed walls and trying to cool it will cost out the arse and be extremely difficult.

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  9. #9 Smokexbreak, Jun 5, 2019
    Agreed 100%
     
  10. #10 Sade, Jun 5, 2019
    Window AC unit is your best bet but will jump your electric bill up.
     
  11. #11 Sypha, Jun 5, 2019


    This is 100% hands down the best and only real solution to this issue.. getting the space built correctly..

    After this is said & done if its in the budget!! youll also see a huge difference in what it cost to operate.. (= savings) guarantee!!

    But 100% certain if u wanna grow & not worry bout the bullshit.. insulate properly with some sheet rock and youll be good to go.. growing & now saving money while doing so
     
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  12. #12 Progrouk, Jun 5, 2019
    i take it your running hps ??
     
  13. #13 Novice grower187, Jun 5, 2019
    I'm running 6 - 315s CMH in the flower which have ballast attached but not air cooled unfortunately but have plenty of airflow. It's the just temp in the shed that heats up and causes the tents to heat as well, but I'm really convinced the best bet now is insulating, especially come winter time too since we tend to get dumped on with heavy amounts of snow. The shed is a 12x32' and 10' in height but I have the exhaust fans in both veg and flower tents as well as the portable 12000btu ac unit in the flower tent ducted and all running out the same hole to the outside. A window ac would be nice and all except i dont have a window and may end up expanding the hole that I currently have a 12in industrial exhaust fan in to help with some of the heat. Instead of sheetrock, would R-tech styrofoam insulation board work as well on top of the fiberglass insulation??
     
  14. #14 jtruog, Jun 5, 2019
    I like the idea of spray foam insulation. It air seals and insulates at the same time.

    But it can be pretty expensive. We use froth packs that can cover 600 square feet to a depth of one inch. These are about $800 each.

    More economical if you DIY is your idea of insulating with fiberglass and covering that. I would air seal the outside walls first with caulk and spray foam. This will help make your insulation more effective.

    You could definitely cover with rigid foam insulation. It will be pretty easy to damage though.

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  15. #15 JoshuaE, Jun 5, 2019
    Right on time with this post.
    I was debating portable or window unit.
    My main ac went out and its going to take days to get a new blower fan motor here and installed. So I got to do something
     
  16. #16 countrytoker34, Jun 7, 2019
    How's things coming along?

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  17. #17 Novice grower187, Jun 7, 2019
    I am going to wait on this harvest and once it is completed, drop my flower tent to start insulting lol. Trying not to disturb them anymore then needs be.
     
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  18. #18 Dseb0127, Jun 7, 2019
    Green board instead of drywall/Sheetrock?
     

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