Single Poly vs Double Layer Inflated Greenhouse Plastic | Pros and Cons

Comparing single layer and double layer inflated greenhouse plastic. www.tunnelvisionhoops.com/new...
**OUR GREENHOUSES**
The greenhouses and high tunnels in this video are Tunnel Vision Hoops LLC high tunnels. Learn more here: www.tunnelvisionhoops.com/gre...
**BLOWER FANS**
Interior Air Draw Fans: www.tunnelvisionhoops.com/gre...
Exterior Air Draw Fans: www.tunnelvisionhoops.com/gre...
Jumper Hose: www.tunnelvisionhoops.com/jum...
**GREENHOUSE PLASTIC**
4 year 6 mil Clear Greenhouse Poly (cut to order): www.tunnelvisionhoops.com/4-y...
Anti-Drip 4 yr. 6 mil Greenhouse Poly (cut to order): www.tunnelvisionhoops.com/gre...
4 Year 6 mil Greenhouse Plastic (ready to ship): www.tunnelvisionhoops.com/pre...
**ROLL-UP HARDWARE**
EZ-Snap Hook: www.tunnelvisionhoops.com/ez-...
Anti-Billow Rope: www.tunnelvisionhoops.com/rop...
Snap Clamps: www.tunnelvisionhoops.com/sna...
7:1 Gear Box Roll Ups (48 ft. or shorter structure): www.tunnelvisionhoops.com/gea...
13:1 Gear Box Roll Ups (longer than 48 ft.): www.tunnelvisionhoops.com/gea...
Auto Roll-up Motors: www.tunnelvisionhoops.com/aut...
**GET A HIGH TUNNEL GREENHOUSE QUOTE**
Want a quote on one of our high tunnels, or hoop houses?: www.tunnelvisionhoops.com/gre...
**OTHER VIDEOS TO WATCH**
Installing Two Layers Inflated Top Poly: • Installing TWO layers ...
Installing One Layer of Greenhouse Plastic: • How to Install Greenho...
Corner Wind Panels: • How to Install Greenho...
6 mil Plastic End-Walls: • How to Install Greenho...
8 mm Polycarbonate End-Wall Install: • Polycarbonate Greenhou...
Roll-up Sides for Greenhouses: • Roll up sides for Gree...
How to Bend Single Aluminum Channel: • Attaching Spring Wire ...
*CHAPTERS*
0:00 What We Cover
0:58 One IMPORTANT Question
1:41 Ease of Install
3:16 Up Front Costs
4:07 Labor Costs
5:26 Future Costs
9:04 Structure Strength
10:02 Plant Health
12:17 Newsletter
Tunnel Vision Hoops LLC aims to be a friend to farmers, market gardeners, flower farmers, homesteaders, backyard growers, and local food enthusiasts.
Original music by the wonderful, Neil Hoefs
Other music from Epidemic Sound

[@KrazyKajun602]

Todd, the double layer looks awesome and wow you could bounce a quarter on the top layer. I did close the air vent all the way and it seems to be holding up just find. I am glad I chose the double layer poly.

[@tunnelvisionhoops]

Sounds good, and thanks for letting us know!

[@ourv9603]

Severe Wind Event? Funny Story... I erected a single layer hoophouse & know we get some ass kicking wind here on the Pacific coast So what I did was I took 4 - three foot T post & drove them in the ground inside the 4 corners THEN threw a ratchet strap up & over the metal frame under the plastic & ratcheted them just taunt. 2 days later we had a SEVERE WIND EVENT. 40mph steady winds gusting to 60. My new hoophouse? Steady as a rock. HOWEVER, when I went into it the next day I found the wind had been SO strong it had bent a couple of the steel frame pipes. But it stood. !

[@SimplyJapaneseMaples]

Nailed it! Thanks for the pro demo.

[@tunnelvisionhoops]

You’re welcome! Thanks for watching

[@TheKlink]

@@tunnelvisionhoops what's the noise like inside these? I was thinking of using something like this as an outdoor temporary workspace

[@maxalexander1161]

Very well done😊

[@tunnelvisionhoops]

Thank you, and thanks for watching!

[@hudson8865]

Thank you very much.

[@tunnelvisionhoops]

You are welcome!

[@billmoody9736]

Excellent video

[@tunnelvisionhoops]

Thanks much, and thanks for watching!

[@TheJim9595]

Great video!! Serious question here. I live in Northern MN. I've got a 20' x 33' single layer. I'm going to re-cover this spring. Would I benefit from a (Triple layer) my thought is. The outer layer keeps the really bitter cold off middle layer, middle layer separates the warm area from the minus -40° outside. Do you know if this has been done? And where best to draw inflation air from ?

[@tunnelvisionhoops]

@TheJim9595 That is an interesting idea, but one I have never seen or done. The trade off between interior vs exterior drawn air is condensation vs warmth. If exterior air is used between layers your condensation between layers will be reduced and more light gets through, if interior air is used between layers your condensation is increased, but the pad of air is warmer (which could have its own benefits). Essentially there are pros and cons to each. If you were to do both layers with interior air draw you may find that two layers of condensation-filled air pads creates too much of a decrease in light transmission. So doing one interior air draw and one exterior air draw blower fan could be a good way to split the trade-off up. Either way, the above are just my thoughts since I have never done this myself. If you do execute this installation, I would LOVE for you to send an update with how it goes. Thanks for watching and for commenting!

[@michaelzueger1014]

Great video. What about any effect of 2 layers and sunlight intensity. If I tend to put a 30% shade cloth on for the summer, how much do you think that extra layer of plastic would reduce light intensity? And as the plastic ages, I suppose there would be a greater reduction.

[@tunnelvisionhoops]

Thanks for the kind words. Most 6 mil plastics let about 90% of the light through. So I would figure that 90% of the light gets through the exterior most layer and then 90% of that light gets through the interior most layer (that would be… 90% of that 90%). If my math is correct, and maybe it is not, that would make the total light transmission through two layers of 6 mil plastic around 72%. This sounds low, but there are single layer woven plastics that only let 80% of the light through, and plenty of people do double layer inflated systems successfully using those materials. As for light transmission reduction over time, there will be some of that. From wind, rain, and weather in general, but most usually the actual movement of the plastic, which is caused by all of the weather events mentioned. The movement will slowly create light transmission reduction. Oddly enough, inflating two layers of plastic reduces the movement of both plastic layers and in this sense can slow down the loss of light transmission. There is certainly a lot to consider when it come to two layers of poly covering. Thank again for the comment.

[@michaelzueger1014]

@@tunnelvisionhoops Ok, makes sense. Thanks again for all the information you put out!

[@tunnelvisionhoops]

You’re welcome, and thanks for watching (and commenting)!

[@cynthiafisher9907]

Would you be able to make a video about installing polycarbonate end walls?

[@tunnelvisionhoops]

We have a how-to install polycarbonate video, which you can watch here: kzbin.info/www/bejne/on-lioRrd8horck Or were you wanting me to make a video on the pros and cons of polycarbonate? Let me know, and thanks for the comment. I love video suggestions.

[@cynthiafisher9907]

@@tunnelvisionhoops Ok, Thanks! I should have looked further. I’m just wondering about how to build a framework on the ends, mostly.