Corrugated Fibreglass Roof Panels?

[kmk420kali]

IrishSoCo...you forgot to add in the plywood--
Plywood will run you approx $11 for OBS...or $20 for T-iii siding--
You were way high on your lumber estimates...and if you go with the plastic roof panels from Home Depot...they are 2X12 feet, and $20 ea-- (Just thought I'd help)
I would highly encourage doing this if you can...it works very well...and just looks like a shed-- Here are a few more things you will need for it--
Cooling units, Vents, and don't forget to put in a hose-bib--

Biggest drawback** Dirt floors make it much harder to deal with bugs--

Good luck...and Peace--Jim

 

[Guest]

kmk: good call! i knew something wasn't adding up all the way and it was tooooo cheap.
good news that the other stuff is cheaper than i thought

as far as the vents, I was thinking i might need to run some large barn/greenhouse fan at one end and have vents at the other. If I had a large 4' fan at the middle-peak of one end and vents at the other do you think that would adequately circulate air and cool? Ideally i'd put it on some sort of time so it would go on maybe once an hour for 10 minutes. I could then have a bunch of ocsillating fans circulating air and i could run a propane CO2 generator or 2. can you tell i've never set up a greenhouse before???

as far as the siding....do you use plywood or that t-iii siding you mentioned or what?
if you have time, i'm also curious about the spacing for the support beams and framing

 

[kmk420kali]

We used the siding, as it made it look much better, and they come pre-primed for paint--
Vents are VERY important!! We only had one in it for a while...and ended up fighting Powder Mildew!! It works best with a good size vent at each end (up high) And hook up an exhaust fan to a humidity control thingy-- (Sorry...I'm not a Tech...lol!!)
Also, make sure (if possible) to set it so the sun tracks through it "Long-ways" (East-West)

I will help with ?'s on framing...but I am medicating right now, and thinking is on a minimum!!

 

[Mr Celsius]

Ok, when we look at one of these thing, really all were attempting to do is get rid of the indoor lighting and free us from the costs and overhead, thus allowing us to do a larger run. So, when we look at it from that perspective, we should treat these "barns" as an indoor grow up, the only thing that has changed in the lighting.

So... what you should do is, buy a bunch of pond liner and pond liner tape. That will be the floor. Next thing is sealing the entire "barn" as best as possible. You should have multiple dedicated hepa filters are your air intake. The entire walls (up to the roof and down to the pond liner) should be covered in panda poly and duct taped together to ensure an air tight seal. At least 20-30 amps of power should be ran into the barn on a subpanel. This power will handle multiple 2000cfm fans hooked up to carbon scrubbers. The idea is, the places is so well sealed, that we have a negative pressure, pulling air in through the carbon filters and always getting an air exchange. Thus reducing temperatures to the ambient air outside and negating all smell.

Only me please chime in if you feel it is improbable. I personally think it is doable, however must be implemented correctly.

I feel that this would provide the best growing environment and security. If you live in the boonies like kmk, then you could forget the carbon scrubbers.

 

[Guest]

i feel like if i ever was to do one of these barns i'd make sure i was a 1/2 mile or so from my nearest neighbor.......a nice lil 20 acre plot always helps with that kinda thing

I think i'd just try to run the ventilation like a standard greenhouse


thanks for the info kmk, ill hit you back on the framing ?s later

 

[kmk420kali]

Ok, when we look at one of these thing, really all were attempting to do is get rid of the indoor lighting and free us from the costs and overhead, thus allowing us to do a larger run. So, when we look at it from that perspective, we should treat these "barns" as an indoor grow up, the only thing that has changed in the lighting.

So... what you should do is, buy a bunch of pond liner and pond liner tape. That will be the floor. Next thing is sealing the entire "barn" as best as possible. You should have multiple dedicated hepa filters are your air intake. The entire walls (up to the roof and down to the pond liner) should be covered in panda poly and duct taped together to ensure an air tight seal. At least 20-30 amps of power should be ran into the barn on a subpanel. This power will handle multiple 2000cfm fans hooked up to carbon scrubbers. The idea is, the places is so well sealed, that we have a negative pressure, pulling air in through the carbon filters and always getting an air exchange. Thus reducing temperatures to the ambient air outside and negating all smell.

Only me please chime in if you feel it is improbable. I personally think it is doable, however must be implemented correctly.

I feel that this would provide the best growing environment and security. If you live in the boonies like kmk, then you could forget the carbon scrubbers.

I am sorry it took so long to answer..I am under these post limitations...only 10 in 24 hrs...until i get 50 posts-- Been driving me ****ing crazy!!!

The reason we are doing these like this...is to save $$...and get a lot of weed-- :headbang
We break all kinds of rules... ie; temp too high, not pHing shit...chemical ferts, re-use dirt...but it is working--
I am learning as I go...been at this one for this year...last year I was at an indoor grow that ended up getting busted-- (I didn't grow there much...just mostly built it--)
Official Po-Po video-- http://youtube.com/watch?v=qjaBWwWDHx8&mode=related&search=

And here is one my son "enhanced"-- lol!!
http://youtube.com/watch?v=TgXebxP1rrU

My Homies that got busted for this 4 and a half million dollar bust...(That was the biggest bunch of bullshit ever!!! They counted over 700 plants and counted each as 1 pound...altho over half were clones--
They were offered 1 year Probation on this last week-- They said **** you...go to trial--
This is a very important trial, as it is the first major grow that has been busted...but has legitimate ties with Dispensaries... I will open a thread devoted to this..once I am allowed to post more than 10 times a day--

Bruce Margolin, the so-called "Best Medical Marijuana Attorney in California"...also on the Board of Directors at NORML...dropped this case...because they did not have another $10,000--
So much for "Compassion"--

 

[Guest]

sorry, to hear bruce dropped the case. Best MMJ attorney might=only takes cases he know he will win.

it seems like on the weight counting issue you never know if they're gonna try to screw ya over or give you the real count

 

[kmk420kali]

Unfortunately, Bruce dropped the case because of $$
This is a pretty important case, since it was a grow...in an industrial area...with firm ties to a legitimate Dispensary-- I would have thought there would be more compassion here..as all parties concerned are not wealthy--
Sorry tho..not meaning to get off topic-- But I am 1 post away from reading this mystery PM that has been flashing-- I will be able to post normally tomorrow tho-- (Damn I'm faded)
Peace

 

[LORD BENIS]

For what it's worth, here's my master plan:
Build about a 12 foot greenhouse frame out of wood with a single angled roof....///

....and make a permanent roof out of some kind of nice polycarbonate
....then wrap the walls in some kind of plastic; either cheap clear 6 mil. or Panda.
....and collect rainwater with a simple gutter system attached to the lowest side of the roof
....and connect that to a large rain barrrel or cistern
....and prop that up to supply a gravity fed a drip hose.
I could modify it to use pumps or rig up some kind of system to manipulate the photoperiod, too.
I like to loose the walls during summer in order to reduce heat.
I figure this way I would have free light and water while still taking advantage of seasonal rains. All the while keeping temps down during the hottest time of the year and hopefully never having to run one watt of electricity. I've even thought of just using an old steel shed and nixing the entire greenhosue frame. It would better suite an urban environment, there may be a need for exhaust fans/intake, however. Good thread BTW

 

[Ganico]

They were offered 1 year Probation on this last week-- They said **** you...go to trial--

Here, that'd be a blessing considering the charges. And I really can't conceive of risking doing years on top of years when you could get off with a year on probation.

 

[Guest]

For real.

 

[kmk420kali]

Here, that'd be a blessing considering the charges. And I really can't conceive of risking doing years on top of years when you could get off with a year on probation.

Yeah...but sometimes you just have to stay true to yourself, and your beliefs...nawamean??

They ended up with the Judge telling them he would not allow a Medical Defense in a Jury Trial...and if they lose, he was going to give them 3 years--
They took the Trial by Judge...and got Felony Probation, 700 hrs Community Service..and the Judge refused to recognize their Medical Status...ordering testing for THC--

In other words....he didn't want to handle this case...and broke all the rules, to let it play out in the Appellate Court--


Oh...and also, they got a bill from the Franchise Tax Board...saying they owe taxes on the $4,500,000 they said the grow was worth-- I never heard of that shit...how can they tax you on money you didn't even make??

 

[Ganico]

Shoulda just took the year on probation, huh?

 

[kmk420kali]

Shoulda just took the year on probation, huh?

No, because then there would be no appeal--
They have a legit Dispensary backing them, that they were growing exclusively for them-- I very much believe this will be won on the appeal--

 

[LORD BENIS]

 

[kmk420kali]

My apologies--

 

[konstantgrdnr]

This product comes in commercial sizes. It should reflect natural daylight downward. I would call up and ask if the fresner lens,this is the lens which captures the light. Does it filter the UV ?. I would guess that you don't want any sort of filteration. The light diffuser on the inside would be unnecessary.I would not tell them what your intentions are even if you say it's for a greenhouse. It would seem that you can have more control using this over just putting a sheet of fiberglass on top due to the fact that you would get an even light distribution throught the day.The tubes can even be air cooled.

http://www.solatube.com/commercial/education.php

Here's a competeing product. I was to lazy to digg thru the solatube light website deliver more info i think it's a matter asking the right Qs. I'll try to post more info later after more research. but here's some of the info on the similar product.


SUNTRACKER one DAYLIGHTING SYSTEM EARNS 15-35% ROI,

ENHANCES PERFORMANCE

Reduces HVAC Requirements, Improves Light Quality; Case Studies Tell the Story

The Nature's Lighting SunTracker ONE Daylighting System earns 15-35 percent return on investment, enhances people and building performance and helps preserve the environment.

It can increase sales in retail environments and reduce electric utility and lamp replacement costs.

Energy Efficient Lighting

The SunTracking Daylighting System produces up to nine times more light than a passive skylight and distributes light more evenly and over a wider area.

Compared to electric lighting, it produces illumination equivalent to 800 watts of fluorescent lighting, or more than a 1,000 watt metal halide lamp. Since it does not draw any line voltage, electricity costs for lighting drop to zero during the 12 hours a day that it reflects light indoors.

The combination of lumen performance, low operating cost and long life cycle is what makes the system so energy efficient. The system is warranted for 10 years.

High-end clothing manufacturer Patagonia, for example, installed the daylighting system at a distribution center in Reno, Nevada to reduce electricity consumption.

The facility's requirements for artificial lighting dropped by two-thirds and operating costs, including for HVAC, fell by a third. The reason is that the spectral content of natural light produces about 2.5 times as many lumens per Btu of cooling load than electric lighting.

At a new Wal-Mart Supercenter in Aurora, Colo., 28 daylighting units could save a total of $23,184 yearly, compared to fluorescent lamps totaling the same light output.

That savings would avoid producing 618,200 pounds of atmosphere-warming carbon dioxide, 1,793 pounds of nitrogen oxides and 1,076 pounds of sulfur dioxide. Sulfur dioxide and nitrogen oxides pollute air, creating smog. Nitrogen oxides harm the earth's ozone layer.

Proven Sales Increases

An Ace Hardware store manager in Martinez, Calif., reported at least a 10 percent increase in sales after installing the system. In addition, energy savings totaled 4.9 cents kWh/sq. ft.

Proven Productivity Increases

Scientific evidence shows that people feel, work and learn better with daylight than electric lighting.

http://www.ciralight.com/whydaylighting.php

If your just looking at going with your original idea peacefulvalley farm supply has the poly sheeting.

http://www.groworganic.com/default.html?welcome=T

 

[Guest]

Still Around BB?

Be glad to offer what limited experience I have in greenhousing, and we can talk AP till the cows come home if you wish.

I prefer only one high side with the slope facing the sunny aspect. Just easier to build, looks nicer as it's not so 'ordinary' and I fit it into the slope here beautifully so now the landscaping's done it looks very pro.

Am putting polycarb on it before this winter, to make up a double layer. One layer of greenhouse plastic (duratough) then the polycarb. I get a lot of light in the two sides that are GH plastic too though. The polycarb today has been made to block out UV and apparently it is very effective. The flat polycarb sheets made for greenhousing are very good, opaque, and made for the job, just expensive.

I'm going with the corrugate, as I have light to spare with my reflective white walls, white floor, two translucent sides...

 

[Hindu Killer]

Tagging this for further study!

 

[Hindu Killer]

Ok....so what kind of yield can i expect from a 12 x 15 foot space?