Need a little help with my room

Coldnasty · 2025-03-11T09:07:39-0600

So I got one of those tuff sheds to move my grow. Got it all set up, insulated,framed walls up for the flower room and panda filmed the area ( 10x 10). Had some ice damming over the winter, in cold climate and there was moisture building up and coming down the exterior walls. I have a dehu in the space now and mini split. My question is if I keep the space at 75 temp and 50 humidity, my flower conditions, will this still be an issue? Do I need another air exchange ? I tore the insulation and vapor barrier off hoping to help. Pics attached. Thank you in advance

Jimski · 2025-03-11T14:19:40-0600

Although this could be reduced to a math problem using the cubic feet and duct size and speed with cycling and bla bla bla or you could turn it on and see......
If you have a problem with walls being cold and so cold they drip the insulation is not sufficient. Heating the space up to stop this may land your temps at to high of a temp during flower.

You will not be able to air exchange this problem.

You know what dude I think you just saved me a bunch of money doing the same thing but in reverse. I was going to use a mini split in the summer to force photos into flower as a September flower never works in my area. I will have the same problem where the outside will be 85 and the inside will be 75 and I bet the walls do the same thing.

Coldnasty · 2025-03-11T16:26:45-0600

Jimski said:
Although this could be reduced to a math problem using the cubic feet and duct size and speed with cycling and bla bla bla or you could turn it on and see......
If you have a problem with walls being cold and so cold they drip the insulation is not sufficient. Heating the space up to stop this may land your temps at to high of a temp during flower.

You will not be able to air exchange this problem.

You know what dude I think you just saved me a bunch of money doing the same thing but in reverse. I was going to use a mini split in the summer to force photos into flower as a September flower never works in my area. I will have the same problem where the outside will be 85 and the inside will be 75 and I bet the walls do the same thing.

Dang, so I’m screwed…. I wonder if I can seal the flower area and run CO2? Then try to let the other space be vented or whatever ? Thanks for the replay man

Coldnasty · 2025-03-11T17:33:17-0600

Jimski said:
Although this could be reduced to a math problem using the cubic feet and duct size and speed with cycling and bla bla bla or you could turn it on and see......
If you have a problem with walls being cold and so cold they drip the insulation is not sufficient. Heating the space up to stop this may land your temps at to high of a temp during flower.

You will not be able to air exchange this problem.

You know what dude I think you just saved me a bunch of money doing the same thing but in reverse. I was going to use a mini split in the summer to force photos into flower as a September flower never works in my area. I will have the same problem where the outside will be 85 and the inside will be 75 and I bet the walls do the same thing.

Or do I just grab a big ass tent and put up in the flower room? Should work ?

ttystikk · 2025-03-11T18:07:36-0600

Jimski said:
Although this could be reduced to a math problem using the cubic feet and duct size and speed with cycling and bla bla bla or you could turn it on and see......
If you have a problem with walls being cold and so cold they drip the insulation is not sufficient. Heating the space up to stop this may land your temps at to high of a temp during flower.

You will not be able to air exchange this problem.

You know what dude I think you just saved me a bunch of money doing the same thing but in reverse. I was going to use a mini split in the summer to force photos into flower as a September flower never works in my area. I will have the same problem where the outside will be 85 and the inside will be 75 and I bet the walls do the same thing.

I bet they won't.

ttystikk · 2025-03-11T18:09:47-0600

Jimski said:
Although this could be reduced to a math problem using the cubic feet and duct size and speed with cycling and bla bla bla or you could turn it on and see......
If you have a problem with walls being cold and so cold they drip the insulation is not sufficient. Heating the space up to stop this may land your temps at to high of a temp during flower.

You will not be able to air exchange this problem.

You know what dude I think you just saved me a bunch of money doing the same thing but in reverse. I was going to use a mini split in the summer to force photos into flower as a September flower never works in my area. I will have the same problem where the outside will be 85 and the inside will be 75 and I bet the walls do the same thing.

Correct! He needs a vapor barrier and lots of insulation. That insulation will help in winter AND summer so it's never a wasted investment.

ttystikk · 2025-03-11T18:11:31-0600

Coldnasty said:
Dang, so I’m screwed…. I wonder if I can seal the flower area and run CO2? Then try to let the other space be vented or whatever ? Thanks for the replay man

Seal and add CO2 does add a bit of complexity but CO2 supplementation is not expensive once you have the sensor, regulator and a tank or two.

Or spend time in there and breathe. YOU make CO2 as well lol

ttystikk · 2025-03-11T18:12:14-0600

Coldnasty said:
Or do I just grab a big ass tent and put up in the flower room? Should work ?

Not recommended because moisture will build up between tent walls and shed walls and that's bad. Very bad.

Coldnasty · 2025-03-11T19:00:19-0600

ttystikk said:
Correct! He needs a vapor barrier and lots of insulation. That insulation will help in winter AND summer so it's never a wasted investment.

I guess the vapor barrier and insulation I used in the ceiling didn’t work. I did the fiberglass in the walls with but that pink foam in the ceiling cuz was working over head. We’ll start over again with insulation in the ceiling zzZ

Jimski · 2025-03-11T20:24:52-0600

2x4 the walls and use r15 pink rolls like a house. diys cost about 1k for a 10x10 with ceiling.
so now my 1100 barn is 2100 plus mechanicals.

Coldnasty · 2025-03-11T21:18:58-0600

Jimski said:
2x4 the walls and use r15 pink rolls like a house. diys cost about 1k for a 10x10 with ceiling.
so now my 1100 barn is 2100 plus mechanicals.

I got like 13k in this bish and I diy everything except the building lol. Long electric run from our house but made sure to have plenty of amperage. Insulated the walls heavy but I think my whole mistake was the ceiling. Hope insulating the hell out of it works

Jimski · 2025-03-12T05:18:55-0600

Coldnasty said:
I got like 13k in this bish and I diy everything except the building lol. Long electric run from our house but made sure to have plenty of amperage. Insulated the walls heavy but I think my whole mistake was the ceiling. Hope insulating the hell out of it works

Biggest mistake I made in my new house was diy the basement. Used 1 inch strips and styroboard but the r values was like 6. Cold walls for 30 years.

Need a little help with my room

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